GB1256550A - - Google Patents
Info
- Publication number
- GB1256550A GB1256550A GB1256550DA GB1256550A GB 1256550 A GB1256550 A GB 1256550A GB 1256550D A GB1256550D A GB 1256550DA GB 1256550 A GB1256550 A GB 1256550A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tellurium
- solids
- parametric
- amplitude
- laser beam
- 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.)
- Expired
Links
- 239000007787 solid Substances 0.000 abstract 4
- 229910052714 tellurium Inorganic materials 0.000 abstract 4
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical class [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 abstract 4
- 239000000463 material Substances 0.000 abstract 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- 239000013078 crystal Substances 0.000 abstract 2
- 230000000694 effects Effects 0.000 abstract 2
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 230000004075 alteration Effects 0.000 abstract 1
- 230000003321 amplification Effects 0.000 abstract 1
- 230000005684 electric field Effects 0.000 abstract 1
- XIQODMHKAVVXCR-UHFFFAOYSA-K ethyl sulfate holmium(3+) Chemical compound [Ho+3].CCOS([O-])(=O)=O.CCOS([O-])(=O)=O.CCOS([O-])(=O)=O XIQODMHKAVVXCR-UHFFFAOYSA-K 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000001307 helium Substances 0.000 abstract 1
- 229910052734 helium Inorganic materials 0.000 abstract 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 230000010287 polarization Effects 0.000 abstract 1
- 238000005215 recombination Methods 0.000 abstract 1
- 230000006798 recombination Effects 0.000 abstract 1
- 239000011343 solid material Substances 0.000 abstract 1
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
-
- 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
- G02F1/01—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 for the control of the intensity, phase, polarisation or colour
- G02F1/03—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 for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
-
- 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
- G02F1/01—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 for the control of the intensity, phase, polarisation or colour
- G02F1/09—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 for the control of the intensity, phase, polarisation or colour based on magneto-optical elements, e.g. exhibiting Faraday effect
-
- 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
- G02F1/39—Non-linear optics for parametric generation or amplification of light, infrared or ultraviolet waves
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Power Engineering (AREA)
- Lasers (AREA)
Abstract
1,256,550. Parametric amplifiers; light amplifiers. MESSERSCHMITT-BOLKOW BLOHM G.m.b.H. 3 Dec., 1969 [20 Dec., 1968; 14 Feb., 1969; 28 April, 1969 (2)], No. 59058/69. Headings H3B and H4F. [Also in Division H1] Variations in the optical properties of a solid material caused by alterations in a magnetic or electric field, applied to the material at 1-100‹K. are used to amplitude modulate a laser beam from a gas laser. Suitable solids for use with an infra-red beam of wavelength 8-11 Á include holmium ethyl sulphate, strontium titanate, and doped or undoped tellurium, tellurium compounds- or gallium arsenide. Themodulating solids are used at low temperatures such asthose of liquid helium or nitrogen. Modulation frequencies of the order of 100 giga Hertz are stated to be possible. The first two of the above mentioned solids may be used to effect modulation because a variation in the applied electric and/or magnetic fields alters the wavelengths-of the material's absorption maxima and minima. The remaining solids may be used to effect elliptical polarization and hence to produce amplitude modulation, or alternatively; Fig. 4; may be used at 220 to produce relative phase differences between two beams 212, 213 derived from a single laser beam 214 by a splitter 211, so that subsequent recombination of thetwo beams gives an amplitude-modulated beam 215. This latter embodiment has the advantage that it does not dissipate energy in the modulating material. Parametric amplifiers-Another method of modulating a beam is shown in Fig. 5, where a tellurium crystal 120, which may be subject to an electric or magnetic field, is used; to produce harmonics of a laser beam 114. The first harmonic is selected by a filter 121 and passed into a parametric resonator containing a further tellurium crystal 124. Varying the field applied to this latter crystal-produces parametric amplification of the input, and may also modulate the output beam. A further filter 126 may-be used at the output.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681815982 DE1815982B2 (en) | 1968-12-20 | 1968-12-20 | MODULABLE OPTICAL TRANSMITTER FOR COHERENT LIGHT |
| DE19691907475 DE1907475A1 (en) | 1969-02-14 | 1969-02-14 | Arrangement for modulating a gas laser |
| DE19691921699 DE1921699A1 (en) | 1969-04-28 | 1969-04-28 | Arrangement for frequency modulation of a gas laser |
| DE19691921698 DE1921698A1 (en) | 1969-04-28 | 1969-04-28 | Arrangement for phase modulation of a gas laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1256550A true GB1256550A (en) | 1971-12-08 |
Family
ID=27430820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1256550D Expired GB1256550A (en) | 1968-12-20 | 1969-12-03 |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR2026751A1 (en) |
| GB (1) | GB1256550A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0016608A1 (en) * | 1979-03-15 | 1980-10-01 | University Of Delaware | Method and apparatus for signal transmission via an optical fiber |
| EP1020967A2 (en) * | 1999-01-14 | 2000-07-19 | Kobe University | A device for and a method of pulsing and amplifying singlemode laser light |
-
1969
- 1969-12-03 GB GB1256550D patent/GB1256550A/en not_active Expired
- 1969-12-22 FR FR6944419A patent/FR2026751A1/fr not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0016608A1 (en) * | 1979-03-15 | 1980-10-01 | University Of Delaware | Method and apparatus for signal transmission via an optical fiber |
| EP1020967A2 (en) * | 1999-01-14 | 2000-07-19 | Kobe University | A device for and a method of pulsing and amplifying singlemode laser light |
| EP1020967A3 (en) * | 1999-01-14 | 2001-08-16 | Kobe University | A device for and a method of pulsing and amplifying singlemode laser light |
| US6393036B1 (en) | 1999-01-14 | 2002-05-21 | Kobe University | Device for a method of pulsing and amplifying singlemode laser light |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2026751A1 (en) | 1970-09-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |