EP2491628A2 - System for continuously generating polychromatic light by means of doped microstructured optical fibre. - Google Patents
System for continuously generating polychromatic light by means of doped microstructured optical fibre.Info
- Publication number
- EP2491628A2 EP2491628A2 EP10785481A EP10785481A EP2491628A2 EP 2491628 A2 EP2491628 A2 EP 2491628A2 EP 10785481 A EP10785481 A EP 10785481A EP 10785481 A EP10785481 A EP 10785481A EP 2491628 A2 EP2491628 A2 EP 2491628A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- optical fiber
- generation system
- pumping
- core
- fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 61
- 238000005086 pumping Methods 0.000 claims abstract description 44
- 239000006185 dispersion Substances 0.000 claims abstract description 22
- 230000005855 radiation Effects 0.000 claims abstract description 20
- 230000008878 coupling Effects 0.000 claims abstract description 19
- 238000010168 coupling process Methods 0.000 claims abstract description 19
- 238000005859 coupling reaction Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 12
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- 230000009021 linear effect Effects 0.000 claims abstract description 6
- 230000006978 adaptation Effects 0.000 claims description 10
- 229910052732 germanium Inorganic materials 0.000 claims description 5
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 239000011574 phosphorus Substances 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- 238000001069 Raman spectroscopy Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims 1
- 230000001902 propagating effect Effects 0.000 claims 1
- 230000002123 temporal effect Effects 0.000 claims 1
- 239000000835 fiber Substances 0.000 description 60
- 230000003595 spectral effect Effects 0.000 description 14
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000004624 confocal microscopy Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005305 interferometry Methods 0.000 description 2
- 230000009022 nonlinear effect Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 102000001554 Hemoglobins Human genes 0.000 description 1
- 108010054147 Hemoglobins Proteins 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000002547 anomalous effect Effects 0.000 description 1
- 239000000090 biomarker Substances 0.000 description 1
- 238000009534 blood test Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- YWEUIGNSBFLMFL-UHFFFAOYSA-N diphosphonate Chemical compound O=P(=O)OP(=O)=O YWEUIGNSBFLMFL-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000684 flow cytometry Methods 0.000 description 1
- 238000002060 fluorescence correlation spectroscopy Methods 0.000 description 1
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium dioxide Chemical compound O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012014 optical coherence tomography Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 phosphorus ions Chemical class 0.000 description 1
- 239000004038 photonic crystal Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/35—Non-linear optics
- G02F1/353—Frequency conversion, i.e. wherein a light beam is generated with frequency components different from those of the incident light beams
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/35—Non-linear optics
- G02F1/365—Non-linear optics in an optical waveguide structure
Definitions
- the present invention relates to the field of broad spectrum light generation, in a spectral range extending from blue to near infrared. It relates more particularly to a system for generating a polychromatic light, comprising:
- an optical pumping means capable of delivering monochromatic or quasi-monochromatic radiation according to a pumping wavelength and a continuous or quasi-continuous time regime
- a light guiding means arranged to deliver at its output a polychromatic radiation in a continuous or quasi-continuous time regime
- Another known solution is to use a pumped supercontinuum source by a pulsed laser.
- the patent document FR 2 867 574 describes for example a device for generating a polychromatic light, comprising optical pumping means capable of delivering radiation of at least two different excitation wavelengths, as well as light guiding means arranged, in case of excitation by radiation in a nonlinear excitation regime, to deliver an output polychromatic light.
- the guiding means comprise for this purpose a non-linear medium, which allows the implementation of several frequency conversions.
- the optical pumping means comprise a laser cavity delivering at least two different wavelengths. The guiding means thus allow a significant extension of the spectrum of the oscillating light in the laser cavity.
- the patent document FR 2 884 623 describes a device for generating a polychromatic light, further comprising optical pumping means, light guide means and selective injection means.
- the pumping means are capable of delivering a first radiation of a first wavelength.
- the selective injection means are used to inject the first radiation from the pumping means into the guide means, the latter being arranged to generate a harmonic corresponding to the selective injection and to output a polychromatic light, by excitation not linear resulting from this first radiation and this harmonic.
- the guide means may comprise for this purpose a microstructured optical fiber and be substantially monomode type for the first radiation and substantially multimode type for the harmonic.
- One of the aims of the invention is therefore to provide a system capable of generating a polychromatic light having a high power spectral density throughout the spectral range of the visible.
- Another object of the invention is to have a system that does not require prior synchronization with additional measuring devices.
- Another object of the invention is to be able to generate a polychromatic light in a simple manner using laser sources commercially available, robust and inexpensive.
- an optical pumping means capable of delivering monochromatic or quasi-monochromatic radiation according to a pumping wavelength and a continuous or quasi-continuous time regime
- a light guiding means arranged to deliver at its output a polychromatic radiation in a continuous or quasi-continuous time regime
- the guiding means comprises a microstructured optical fiber working in the fundamental mode whose core is at least partially doped at a doping level of greater than 3 mol% with a material with an intrinsic non-linear response greater than 2. / W / km.
- the geometry of said optical fiber and the doping rate of the core are determined so as to adapt the zero dispersion length dn) of the optical fiber to the pumping wavelength ( ⁇ ).
- the combination proposed by the invention thus makes it possible to generate a supercontinuum light having a spectral extension comparable to what is obtained in the state of the art with pulsed lasers, but this time with powerful continuous lasers, which makes it possible to obtain much higher spectral densities and efficiency at the output of fiber, in a spectral range extending from the visible to the near infrared.
- the adaptation of the zero dispersion length (dn) of the optical fiber to the pumping wavelength ( ⁇ ) is such that ⁇ dn ⁇ .
- the zero dispersion wavelength of the fiber is thus made smaller than the pumping wavelength.
- this adaptation of the zero dispersion length dn) of the optical fiber to the pumping wavelength ( ⁇ ) preferably consists in causing ⁇ dn G [ ⁇ -L; ⁇ ], L representing a length whose order of magnitude is the hundredth of nanometers.
- the adaptation of the zero dispersion length dn) of the optical fiber to the pumping wavelength ( ⁇ ) consists in causing ⁇ dn G [ ⁇ - L; ⁇ ], L representing a length whose order of magnitude is ten nanometers.
- the core of the optical fiber is surrounded by a plurality of air holes. From the point of view of the geometry of the fiber, those skilled in the art will also note that the latter is all the more favorable to the production of non-linear effects in accordance with the invention than the diameter of the core of the fiber. is small. Thus, preferably, the dimension (d) of the air holes is less than 4 ⁇ .
- the spacing ( ⁇ ) between the air holes is less than 6 ⁇ .
- the doping rate (N) of the core of the optical fiber it is determined so that the Kerr and Raman coefficients of the core are high, within the limit of the adaptation of the dispersion length none ⁇ dn) of the optical fiber at the pumping wavelength ( ⁇ ).
- the light coupling means is arranged so that the fundamental mode of the radiation delivered by the optical pumping means corresponds to the fundamental mode capable of spread in the optical fiber.
- the optical fiber has a low attenuation at wavelengths substantially close to 1380 nanometers. For this, it is proceeded to reduce the OH ion content "of the fiber.
- At least one material constituting the core thereof is formed of a doping element capable of generating an exaltation of the non-linearity.
- this doping element capable of generating an exaltation of non-linearity is one of Germanium and phosphorus.
- This doping element can also be a material whose properties are similar to those of Germanium or phosphorus.
- the optical fiber is monomode or weakly multimode at the pumping wavelength ( ⁇ ).
- the diameter ( ⁇ ) of the heart can be: - constant along the optical fiber, or
- variable along the optical fiber and more particularly decreasing over at least a portion of the length of the optical fiber.
- the dimension (d) of the air holes is variable along the optical fiber, and / or
- the spacing ( ⁇ ) between the air holes is variable along the optical fiber, and / or
- the ratio d / ⁇ between the dimension (d) of the air holes and the spacing ( ⁇ ) between the air holes is variable along the optical fiber.
- FIG. 1 a block diagram of a system for generating a polychromatic light according to a first embodiment of the invention
- FIG. 2 is a diagram of a sectional view of the optical fiber constituting the light guiding means according to this first embodiment
- FIGS. 3A to 3D different geometries of the optical fiber constituting the light guiding means according to different embodiments
- FIGS. 4A to 4C diagrams illustrating different possibilities for implementing the coupling means of the system according to the invention.
- a system for generating a polychromatic light comprises: an optical pumping means 2,
- the optical pumping means 2 is a light source capable of delivering a monochromatic or quasi-monochromatic radiation 3, according to a pumping wavelength ⁇ .
- a pump laser source is an example of a type of adequate pumping means. This source delivers a continuous or quasi-continuous laser beam, with a line width of less than several nanometers and a power of the order of a few Watts or a few tens of Watts.
- the term "quasi-continuous" is used in its usual sense to those skilled in the art that the pump source is neither mode locked nor triggered.
- the coupling means 4 simply allows the light 3 coming from the pumping means 2 to be coupled with the guiding means 6, so that this resulting light 5 is injected into this guiding means 6 where the non-linear effects will be observed.
- the light guiding means comprises an optical fiber 6. This fiber receives the light 5 coming from the coupling means 4, to deliver at its output a radiation 7. Due to the time regime of the pumping means 2 (continuous or quasi-continuous), the time regime of this radiation 7 will be continuous or quasi-continuous. Moreover, according to the invention, this radiation 7 must be polychromatic.
- the optical fiber 6 chosen is a doped microstructured optical fiber, whose geometry and doping rate of its core are determined so as to adapt the zero dispersion length ⁇ dn of the fiber 6 to the pumping wavelength ⁇ .
- the total dispersion of an optical fiber results from the combination of the dispersion of the materials and the that of the waveguide. Summing these two terms is a wavelength for which the dispersion is zero: the dispersion curve crosses the abscissa axis.
- the core of the fiber is doped with a high intrinsic non-linear response material.
- Adequate doping can occur with a material such as germanium (Ge) or phosphorus (P).
- germanium oxide (GeO 2 ) or in phosphorus oxide (P2O 5 ) must be greater than a few mol%, typically greater than 3 mol%. This strong doping makes it possible to increase the Raman gain and the nonlinearity Kerr significantly and thus to accelerate the dynamics of the spectral broadening.
- FIGS. 2A and 2B illustrate the type of geometry to be implemented in order to make it possible to obtain the desired spectral broadening with a continuous pump laser.
- This figure represents a sectional view of the fiber. It should be noted in this respect that if the transverse representation of this fiber suggests that its profile is elliptical, the present invention applies here to any fiber profile, in particular circular or elliptical.
- This fiber 6 is made of a material 6b at least partially doped according to the doping described above, and a series of air holes 6a.
- This series of holes delineates the core 6c of the fiber (the area where there are no more holes, delimited by dotted lines) and the sheath 6d (the rest of the fiber where the holes are).
- the air holes around the heart 6c are here arranged in a hexagon. These air holes 6a preferably have a cylindrical profile.
- this series of air holes 6a is arranged homogeneously in the fiber, except at the center of the latter where there are no holes.
- the optical fiber 6 exhibits a behavior comparable to that of an index jump fiber.
- the air holes in the sheath make it possible to obtain a lower average index than that of the silica.
- the pump wavelength is generally fixed, the properties of the waveguide are adapted to achieve the desired result.
- the doping rate characterizes the doping of the fiber
- two other parameters make it possible to characterize the geometry of this fiber: the dimension of a hole d and the distance between two holes ⁇ .
- FIGS. 3A to 3D illustrate how to obtain an optimal geometry of the microstructured optical fiber 6 so as to adapt its zero dispersion wavelength to the pumping wavelength, while benefiting from a significant spectral broadening in continuous or quasi-continuous mode. These performances will be all the better achieved as the diameter of the heart will be small.
- FIGs 3A and 3B show the case of air holes of small dimensions (d small).
- the holes are widely spaced ( ⁇ large) and therefore the diameter of the heart 6c is very large.
- the holes are slightly spaced ( ⁇ small) and therefore the diameter of the heart 6c is made smaller.
- FIG. 3C and 3D show the case of large air holes (large d).
- the holes are widely spaced ( ⁇ large) and consequently the 6c heart diameter is relatively large.
- the holes are slightly spaced ( ⁇ small) and therefore the diameter of the heart 6c is made very small.
- the diameter of the heart is smaller in the case of Figure 3D.
- the heart is smaller with holes whose dimensions are large (d large).
- the distance ( ⁇ ) between the air holes is of the order of 4 to 6 ⁇
- the diameter (d) of an air gap is of the order of 1 to 4 ⁇ , typically 2.5 ⁇ ,
- the ratio d / ⁇ can be considered as low when it is less than 0.3 and strong when it is greater than 0.5, it can typically be equal to 0.8 ⁇ , and - the number of holes d
- the air in the fiber is between 6 (for a hexagonal arrangement) and several hundred holes, typically around 100.
- FIGS 4A to 4C illustrate various examples of coupling means.
- this coupling means 4 consists of a single convergent lens 4a.
- this coupling means 4 comprises a first optical fiber 4b (it can then be said that the source 2 is a fiber laser source), lenses 4c and 4d arranged to form an afocal system, and an aspherical lens 4e arranged to perform the injection in the microstructured fiber 6 by ensuring that the focal point of the latter lens is at the entrance of the fiber. This produces a spatial shaping of the beam 3.
- this coupling means 4 always comprises a first optical fiber 4b (output fiber of the pump laser).
- This fiber 4b may have a relatively short length, for example 2 meters.
- this fiber 4b is coupled to the microstructured fiber 6 via a fiber of adaptation 4f, of short length, connected to the other two fibers by splicing 4g and 4h.
- the system 1 is then fully fiberized, the splices having a significant advantage in terms of efficiency (losses less than 1 dB).
- the invention makes it possible to significantly improve the generation of a supercontinuum.
- the efficiency of the frequency shift of the solitons is made larger. Therefore, much more reliable pump power or an optical fiber much shorter than that which was necessary in the embodiments of the prior art can be used.
- the invention makes it possible to use continuous sources, it makes it possible to overcome synchronization problems inherent to the use of pulse sources, which opens the way to new uses.
- Figures 5 to 8 show several of these uses.
- the system according to the invention can be used to perform flow cytometry, for example to perform blood tests.
- a supercontinuum source 1 according to the present invention is used.
- This source generates a light beam having a broad spectrum and operating in continuous (or quasi-continuous) mode.
- This beam passes through a tunable spectral filter 10, then a lens 1 1.
- the solution to be analyzed (cells, hemoglobin ..., possibly with a biological marker) is injected via the injector 12 so as to meet the beam generated by the source 1.
- the place of their meeting makes it possible to constitute the sample to be analyzed.
- a lens 14 and a first detector 15 at 180 ° of the source 1 are arranged. relative to the sample 13, and a lens 16 and a second detector 17 at 45 ° of the source 1 relative to the sample 13.
- the second detector 17 is used mainly for fluorescence measurements of the particles.
- the system according to the invention can be used for making low coherence interferometry measurements, such as, for example, optical coherence tomography.
- the supercontinuum source 1, according to the present invention is fiberized via the optical fiber 21 to a coupler 20.
- This coupler couples the fiber 21 with three other fibers: a first fiber 22 directed towards a lens 25 and a fixed mirror 26 (constituting the reference arm of the interferometer), a second fiber 23 directed towards the mobile sample to be analyzed 28 (constituting the other arm of the interferometer) and a third fiber 24 also coupled to a detector 29.
- This measuring device almost entirely fiber thus makes it possible to analyze the sample 28 by interferometry.
- the system according to the invention can be used to perform confocal microscopy.
- a supercontinuum source 1 according to the present invention is used.
- This source generates a light beam having a broad spectrum and operating in continuous (or quasi-continuous) mode.
- This beam passes through a tunable spectral filter 30, then a dichroic mirror 31.
- a part of the beam passes through this mirror 31 to move towards a lens 32 whose role is to direct the beam towards a portion of the sample to be analyzed 33.
- the light reflected by this sample 33 passes through the lens 32 again, then is reflected on the mirror 31, which directs it to a spatial filter 34 and a detector 35.
- the invention makes it possible here to perform a confocal microscopy (for example for fluorescence correlation spectroscopy measurements) with a broad-spectrum source in time regime continuous (or almost continuous).
- the system according to the invention can be used to produce remote lighting.
- the supercontinuum source 1 is fiberized via the optical fiber 41.
- this fiber 41 may optionally be arranged a tunable spectral filter 40.
- the source (and if necessary the filter) is disposed in a technical room provided for this purpose.
- the output of the fiber 41 is placed in the room to be illuminated.
- a lens may be placed at the output of this fiber.
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0905092A FR2951878B1 (en) | 2009-10-22 | 2009-10-22 | SYSTEM FOR GENERATING DOPED MICROSTRUCTURE OPTICAL FIBER OPTICAL POLYCHROMATIC LIGHT |
PCT/FR2010/052234 WO2011048329A2 (en) | 2009-10-22 | 2010-10-20 | System for continuously generating polychromatic light by means of doped microstructured optical fibre. |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2491628A2 true EP2491628A2 (en) | 2012-08-29 |
Family
ID=42046124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10785481A Withdrawn EP2491628A2 (en) | 2009-10-22 | 2010-10-20 | System for continuously generating polychromatic light by means of doped microstructured optical fibre. |
Country Status (4)
Country | Link |
---|---|
US (1) | US8643940B2 (en) |
EP (1) | EP2491628A2 (en) |
FR (1) | FR2951878B1 (en) |
WO (1) | WO2011048329A2 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2987905B1 (en) * | 2012-03-08 | 2015-03-20 | Commissariat Energie Atomique | DEVICE FOR CONVERTING THE TRANSVERSE SPATIAL PROFILE OF INTENSITY OF A LUMINOUS BEAM, PREFERABLY USING A MICROSTRUCTURED OPTICAL FIBER |
TWI474060B (en) * | 2013-06-18 | 2015-02-21 | Nat Univ Tsing Hua | Supercontinuum generation system |
US9841557B2 (en) * | 2013-07-10 | 2017-12-12 | Nkt Photonics A/S | Microstructured optical fiber, supercontinuum light source comprising microstructured optical fiber and use of such light source |
US9667021B2 (en) * | 2014-10-07 | 2017-05-30 | Bae Systems Information And Electronic Systems Integration Inc. | Phosphate photonic crystal fiber and converter for efficient blue generation |
FR3050289B1 (en) * | 2016-04-13 | 2018-04-06 | Centre National De La Recherche Scientifique - Cnrs - | DEVICE FOR GENERATING A WAVE LENGTH PHOTON BEAM DEFINING A SUBSTANTIALLY CONTINUOUS SUPERCONTINUUM |
CN106785835B (en) * | 2016-12-14 | 2019-02-19 | 电子科技大学 | The infrared super continuous laser transmitter of ultra wide band in a kind of all -fiber |
CN106848809A (en) * | 2017-03-06 | 2017-06-13 | 李志远 | A kind of generation is visible to infrared band pole broadband, the device of super continuous laser |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2001279603A1 (en) * | 2000-08-11 | 2002-02-25 | Crystal Fibre A/S | Optical wavelength converter |
CA2465522A1 (en) * | 2001-10-30 | 2003-05-08 | Southampton Photonics Limited | An optical light source |
FR2867574B1 (en) * | 2004-03-12 | 2006-10-06 | Abx Sa | DEVICE FOR GENERATING CONTINUOUS SPECTRUM POLYCHROMATIC LIGHT |
US7280567B2 (en) * | 2004-03-12 | 2007-10-09 | Pavilion Integration Corporation | High-power red, orange, green, blue (ROGB) fiber lasers and applications thereof |
FR2884623B1 (en) * | 2005-04-15 | 2008-02-08 | Centre Nat Rech Scient | DEVICE FOR GENERATING CONTINUOUS SPECTRUM POLYCHROMATIC LIGHT BY EXCITATION AT WAVELENGTH |
FR2942553B1 (en) * | 2009-02-20 | 2011-07-22 | Univ Limoges | OPTICAL DEVICE FOR GENERATING POLYCHROMATIC LIGHT |
-
2009
- 2009-10-22 FR FR0905092A patent/FR2951878B1/en not_active Expired - Fee Related
-
2010
- 2010-10-20 WO PCT/FR2010/052234 patent/WO2011048329A2/en active Application Filing
- 2010-10-20 EP EP10785481A patent/EP2491628A2/en not_active Withdrawn
- 2010-10-20 US US13/503,094 patent/US8643940B2/en not_active Expired - Fee Related
Non-Patent Citations (2)
Title |
---|
ROY AUDE: "Architectures de sources lasers blanches à fibresoptiques microstructurées actives", 6 February 2009 * |
See also references of WO2011048329A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2011048329A3 (en) | 2011-07-21 |
US8643940B2 (en) | 2014-02-04 |
US20120268807A1 (en) | 2012-10-25 |
FR2951878A1 (en) | 2011-04-29 |
WO2011048329A2 (en) | 2011-04-28 |
FR2951878B1 (en) | 2011-11-25 |
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