CN111934181A - Low-threshold organic Raman amplifier and application - Google Patents

Low-threshold organic Raman amplifier and application Download PDF

Info

Publication number
CN111934181A
CN111934181A CN202010714390.4A CN202010714390A CN111934181A CN 111934181 A CN111934181 A CN 111934181A CN 202010714390 A CN202010714390 A CN 202010714390A CN 111934181 A CN111934181 A CN 111934181A
Authority
CN
China
Prior art keywords
organic
raman
gain
low
raman amplifier
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.)
Granted
Application number
CN202010714390.4A
Other languages
Chinese (zh)
Other versions
CN111934181B (en
Inventor
赖文勇
林赫
张嘉玲
姬东周
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing University of Posts and Telecommunications
Original Assignee
Nanjing University of Posts and Telecommunications
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing University of Posts and Telecommunications filed Critical Nanjing University of Posts and Telecommunications
Priority to CN202010714390.4A priority Critical patent/CN111934181B/en
Publication of CN111934181A publication Critical patent/CN111934181A/en
Application granted granted Critical
Publication of CN111934181B publication Critical patent/CN111934181B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094042—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a fibre laser
    • H01S3/094046—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a fibre laser of a Raman fibre laser
    • 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
    • H01S3/30—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects
    • H01S3/302—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects in an optical fibre

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

The invention discloses a low-threshold organic Raman amplifier and application thereof, belonging to the field of laser materials and application. The Raman signal amplification device comprises a pumping source and a Raman amplification unit, wherein an organic gain medium is used as a gain layer and a Raman amplification layer of the Raman amplification unit, the Raman signal is subjected to nonlinear amplification by utilizing the interaction between amplified spontaneous emission light and stimulated Raman scattering light of the organic gain medium, and meanwhile, the device has a wide and adjustable wavelength output window due to the wider gain spectrum of an organic gain material, so that the broadband flux output of the Raman signal can be effectively realized. The method has low cost and simple and quick preparation, and the preparation method of solution processing can realize patterning preparation and free adjustment of shape and size. The device has excellent performance, high gain, wide band pass, low threshold, high signal-to-noise ratio and excellent optical stability, and can be applied to the technical fields of optical communication technology, biological imaging technology and material structure identification.

Description

Low-threshold organic Raman amplifier and application
Technical Field
The invention belongs to the technical field of laser materials and application, and particularly relates to a low-threshold organic Raman amplifier and application thereof.
Background
The raman effect is derived from molecular vibration and rotation, information of molecular vibration energy level and rotation energy level structures can be obtained from raman spectra, and the raman effect is commonly used for structure identification and molecular interaction analysis in the aspect of organic chemistry. Ordinary raman spectroscopy, while providing specific vibrational characteristics of chemical bonds, has low sensitivity. The method can realize extremely high sensitivity based on stimulated Raman scattering, has no background and high contrast of images, and is widely applied to biomedical imaging. In addition, a high-gain, broadband-pass and low-noise raman amplifier can improve transmission capacity and long-distance unrepeatered transmission, and is one of the key points of research in the field of communication at present. The currently commercially used raman amplifier is mainly based on glass fiber, which has good stability but extremely high pumping threshold, and this severely limits the application of raman in nonlinear optics and laser technology. In recent years, organic materials have shown important research value in the field of communication due to their wide luminescence spectrum and large raman shift, and therefore, it is necessary to develop a raman amplifier based on organic materials.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art and better meet the requirements of the development of an optical communication technology and the application in the technical fields of biological imaging and material structure identification, the invention provides a low-threshold organic Raman amplifier with excellent comprehensive performance and application thereof. The device can simultaneously realize high gain, wide band pass, low threshold, high signal-to-noise ratio, excellent optical stability and low-cost manufacture.
The technical scheme is as follows: in order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a low-threshold organic Raman amplifier which comprises a pumping source and a Raman amplification unit. The pump source is the method used for conventional ASE characterization: the pumping light has a spot area of 0.018cm2And a stripe of light of length 4mm, incident perpendicularly to the sample surface.
The Raman amplification unit comprises a gain layer, a Raman amplification layer and a substrate; the gain layer and the Raman amplification layer are the same layer of organic gain material deposited on the upper surface of the substrate, and the refractive index is larger than that of the substrate. The organic gain material selected by the invention has the functions of a gain layer and a Raman amplification layer, and the gain material is directly dispersed in an organic solvent and deposited on a substrate to prepare the gain film.
The organic gain material is micromolecule, star-shaped macromolecule, linear macromolecule, biological dye and fluorescent protein organic gain material or binary compound of the materials.
The substrate is a rigid transparent substrate or elastic plastic. The transparent rigid substrate is: quartz, glass. The elastic plastic is as follows: one of polyethylene terephthalate PET, polyimide PI, polyvinyl alcohol PVA, polymethylsiloxane PDMS, polyurethane acrylate PUA or hydrogel.
The gain layer and the Raman amplification layer are deposited in a spin coating mode, an ink-jet printing mode or a vacuum evaporation mode.
The pumping source is Nd3+YAG laser or titanium sapphire laser.
Has the advantages that: compared with the prior art, the low-threshold organic Raman amplifier and the application thereof provided by the invention have the following advantages: the organic Raman amplification unit of the invention fully utilizes the wider gain spectrum and the higher gain value of the organic gain material to amplify the Raman signal, thereby obtaining the low-threshold organic Raman amplifier with excellent comprehensive performance. The interaction between the amplified spontaneous emission spectrum of the organic gain medium and the spectrum of the stimulated Raman scattering signal enables the output Raman signal to generate nonlinear amplification, and meanwhile, the wider gain spectrum enables the device to have a wider wavelength output window, so that broadband flux output can be effectively realized. In addition, the method has low cost and simple and quick preparation, and the preparation method of solution processing can realize patterning preparation and free adjustment of shape and size. In a word, the device has excellent performance, high gain, wide band pass, low threshold, high signal-to-noise ratio and excellent optical stability, and can be applied to the technical fields of optical communication technology, biological imaging technology and material structure identification.
Drawings
Fig. 1 is a graph of the output intensity and threshold of a low threshold organic raman amplifier.
FIG. 2 is a schematic diagram of the molecular structure of the organic gain medium SpL (2) -1 used in examples 1-3.
Fig. 3 is a wavelength tuning chart of stimulated raman scattering in example 1.
Detailed Description
The invention is further described with reference to the following figures and examples.
Examples
The present invention will be better understood from the following examples. However, those skilled in the art will readily appreciate that the specific material ratios, process conditions and results thereof described in the examples are illustrative only and should not be taken as limiting the invention as detailed in the claims.
The invention provides a low-threshold organic Raman amplifier which comprises a pumping source and a Raman amplification unit.
The Raman amplification unit comprises a gain layer, a Raman amplification layer and a substrate; the gain layer and the Raman amplification layer are the same layer of organic gain material deposited on the upper surface of the substrate, the refractive index of the gain layer and the Raman amplification layer is larger than that of the substrate, and the gain layer is small molecule, star-shaped macromolecule, linear macromolecule, biological dye and fluorescent protein organic gain material or binary compound of the materials.
The substrate is a rigid transparent substrate or elastic plastic.
The transparent rigid substrate is: quartz, glass. The elastic plastic is as follows: polyethylene terephthalate PET, polyimide PI, polyvinyl alcohol PVA, polymethyl siloxane PDMS, polyurethane acrylate PUA and hydrogel.
The gain layer and the Raman amplification layer are deposited in a spin coating mode, an ink-jet printing mode or a vacuum evaporation mode.
The pumping source is Nd3+YAG laser or titanium sapphire laser.
Example 1
Selecting transparent quartz plate as substrate, selecting high-gain low-threshold linear macromolecule SpL (2) -1 (structure formula shown in figure 2) as gain medium, and dispersing SpL (2) -1 in toluene solutionIn the step (b), the concentration of the solution is 30 mg/mL; the preparation method of spin coating is adopted, and spin coating is carried out by using a spin coater with the set rotating speed of 2000rpm and the set acceleration of 1000 rpm. The mixture was placed on a heating table and annealed at 60 ℃ for 10 minutes. The prepared low-threshold organic Raman amplifier realizes the stimulated Raman scattering wavelength tuning from 468nm to 501nm (shown in figure 3), and obtains 29.6 mu J/cm2The ultra-low threshold (shown in fig. 1) is far lower than that of an inorganic raman amplifier, and is the lowest value in the prior report.
Example 2
Selecting polyethylene terephthalate (PET) as a substrate, selecting a spirofluorene ladder-shaped structure material SpL (2) -1 with high gain and low threshold as a gain medium, wherein the concentration of a solution is 30 mg/mL; the PET was placed on the print platform and heated to 55 ℃ with a control dot spacing of 10 μm and a line spacing of 10 μm, on which the gain layer was printed. The mixture was placed on a heating table and annealed at 60 ℃ for 30 minutes. A flexible organic raman amplifier that is bendable can be realized.
Example 3
Selecting polymethyl siloxane (PDMS) as a substrate, selecting a small molecular material poly [ 2-methoxy-5- (2-ethylhexyloxy) -1, 4-phenylacetylene ] (MEH-PPV) as a gain medium, wherein the concentration of the solution is 10 mg/ml; placing the PDMS substrate on a glass sheet, carrying out plasma treatment for 3 seconds, and carrying out spin coating by adopting a spin coating preparation method and setting a rotating speed of 2000rpm and an acceleration of 1000rpm by using a spin coater. The mixture was placed on a heating table and annealed at 60 ℃ for 10 minutes. A flexible organic raman amplifier that is bendable and stretchable can be realized.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims (10)

1. A low-threshold organic Raman amplifier is characterized in that the amplifier comprises a pumping source and a Raman amplification unit,
the Raman amplification unit comprises a gain layer, a Raman amplification layer and a substrate; the gain layer and the Raman amplification layer are the same layer of organic gain material deposited on the upper surface of the substrate, and the refractive index is larger than that of the substrate.
2. A low threshold organic raman amplifier according to claim 1, wherein said organic gain material is one of a small molecule, a star-shaped macromolecule, a linear macromolecule, a biological dye and a fluorescent protein, or a binary complex of two thereof.
3. A low threshold organic raman amplifier according to claim 1 or 2, wherein said organic gain material is a linear macromolecule SpL (2) -1 or a small molecule MEH-PPV.
4. A low threshold organic raman amplifier according to claim 1, wherein said substrate is a rigid transparent substrate or a flexible plastic.
5. A low threshold organic Raman amplifier according to claim 4, wherein said rigid transparent substrate is quartz or glass;
the elastic plastic is as follows: one of polyethylene terephthalate PET, polyimide PI, polyvinyl alcohol PVA, polymethyl siloxane PDMS, polyurethane acrylate PUA and hydrogel.
6. A low threshold organic raman amplifier according to claim 1, wherein said pump source is Nd3+YAG laser or titanium sapphire laser.
7. A preparation method of a low-threshold organic Raman amplifier is characterized in that an organic gain material is dispersed in a toluene solution, and a gain film is prepared on a substrate in a deposition manner; and then placing the substrate on a heating table, and annealing to obtain the low-threshold organic Raman amplifier.
8. The method of claim 7, wherein the concentration of the organic gain material in the toluene solution is 10-30 mg/mL.
9. The method of claim 7, wherein the organic gain material is deposited by one of spin coating, ink jet printing, or vacuum evaporation.
10. Use of a low threshold organic raman amplifier according to any one of claims 1 to 6, characterized in that it is applied in the fields of optical communication technology, biological imaging technology and material structure identification technology.
CN202010714390.4A 2020-07-22 2020-07-22 Low-threshold organic Raman amplifier and application thereof Active CN111934181B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010714390.4A CN111934181B (en) 2020-07-22 2020-07-22 Low-threshold organic Raman amplifier and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010714390.4A CN111934181B (en) 2020-07-22 2020-07-22 Low-threshold organic Raman amplifier and application thereof

Publications (2)

Publication Number Publication Date
CN111934181A true CN111934181A (en) 2020-11-13
CN111934181B CN111934181B (en) 2022-08-30

Family

ID=73315242

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010714390.4A Active CN111934181B (en) 2020-07-22 2020-07-22 Low-threshold organic Raman amplifier and application thereof

Country Status (1)

Country Link
CN (1) CN111934181B (en)

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1144022A (en) * 1994-03-18 1997-02-26 布朗大学研究基金会 Optical sources having strongly scattering gain medium providing laser-like action
US6623977B1 (en) * 1999-11-05 2003-09-23 Real-Time Analyzers, Inc. Material for surface-enhanced Raman spectroscopy, and SER sensors and method for preparing same
CN1538231A (en) * 2003-10-22 2004-10-20 四川大学 Fluorescent dye reinforced Raman laser frequency-shift appartus and use
CN1624992A (en) * 2004-12-21 2005-06-08 中国科学院上海光学精密机械研究所 Self-excited solid laman laser
US20050237602A1 (en) * 2004-04-26 2005-10-27 Nec Corporation Light amplification element, light amplification apparatus and light amplification system
CN101807774A (en) * 2010-04-29 2010-08-18 天津大学 Self-stimulated Raman scattering laser of In-Band pump
CN102244361A (en) * 2011-05-26 2011-11-16 深圳大学 Self-Raman frequency conversion self-mode locking solid laser
CN107533270A (en) * 2015-05-13 2018-01-02 古河电气工业株式会社 Raman amplifiction light source, Raman amplifiction light-source system, raman amplifier, Raman amplification system
CN107880872A (en) * 2017-10-13 2018-04-06 中山大学 A kind of surface-enhanced Raman fluorescent dual module nano-probe based on conjugated polymer and preparation method thereof
CN108173115A (en) * 2016-12-07 2018-06-15 中国科学院大连化学物理研究所 A kind of tunable Ramar laser
CN108767133A (en) * 2018-06-18 2018-11-06 南京邮电大学 A kind of optical pumping Organic Light Emitting Diode and preparation method thereof with high-gain
CN108777431A (en) * 2018-06-18 2018-11-09 南京邮电大学 A method of realizing that double spontaneous radiations are amplified using organic laser gain media film
CN108808449A (en) * 2018-06-22 2018-11-13 南京邮电大学 It is a kind of based on the organic laser thin-film device of triplet excitons amplifier and application

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1144022A (en) * 1994-03-18 1997-02-26 布朗大学研究基金会 Optical sources having strongly scattering gain medium providing laser-like action
US6623977B1 (en) * 1999-11-05 2003-09-23 Real-Time Analyzers, Inc. Material for surface-enhanced Raman spectroscopy, and SER sensors and method for preparing same
CN1538231A (en) * 2003-10-22 2004-10-20 四川大学 Fluorescent dye reinforced Raman laser frequency-shift appartus and use
US20050237602A1 (en) * 2004-04-26 2005-10-27 Nec Corporation Light amplification element, light amplification apparatus and light amplification system
CN1624992A (en) * 2004-12-21 2005-06-08 中国科学院上海光学精密机械研究所 Self-excited solid laman laser
CN101807774A (en) * 2010-04-29 2010-08-18 天津大学 Self-stimulated Raman scattering laser of In-Band pump
CN102244361A (en) * 2011-05-26 2011-11-16 深圳大学 Self-Raman frequency conversion self-mode locking solid laser
CN107533270A (en) * 2015-05-13 2018-01-02 古河电气工业株式会社 Raman amplifiction light source, Raman amplifiction light-source system, raman amplifier, Raman amplification system
CN108173115A (en) * 2016-12-07 2018-06-15 中国科学院大连化学物理研究所 A kind of tunable Ramar laser
CN107880872A (en) * 2017-10-13 2018-04-06 中山大学 A kind of surface-enhanced Raman fluorescent dual module nano-probe based on conjugated polymer and preparation method thereof
CN108767133A (en) * 2018-06-18 2018-11-06 南京邮电大学 A kind of optical pumping Organic Light Emitting Diode and preparation method thereof with high-gain
CN108777431A (en) * 2018-06-18 2018-11-09 南京邮电大学 A method of realizing that double spontaneous radiations are amplified using organic laser gain media film
CN108808449A (en) * 2018-06-22 2018-11-13 南京邮电大学 It is a kind of based on the organic laser thin-film device of triplet excitons amplifier and application

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
杨睿 等: "用染料荧光增益增强弱增益拉曼模式的受激拉曼散射的经典理论", 《光散射学报》 *

Also Published As

Publication number Publication date
CN111934181B (en) 2022-08-30

Similar Documents

Publication Publication Date Title
Ye et al. Organo-erbium systems for optical amplification at telecommunications wavelengths
Yoshida et al. 245 MHz bandwidth organic light-emitting diodes used in a gigabit optical wireless data link
CN106169693B (en) Dye self-polymerization thin film random laser and preparation method thereof
US20050194588A1 (en) Fluorine compound, liquid repellent membrane using the same and product using the same
Khan et al. Reversible photoswitching of carbon dots
Olsson et al. Fabrication and optical properties of polymeric waveguides containing nanocrystalline quantum dots
Adamow et al. Electrically controlled white laser emission through liquid crystal/polymer multiphases
CN110643373A (en) Perovskite quantum dot doped polymer dispersed liquid crystal and preparation method and application thereof
Del Carro et al. Near-infrared imprinted distributed feedback lasers
CN111934181B (en) Low-threshold organic Raman amplifier and application thereof
Yu et al. Water-stable CsPbBr 3 perovskite quantum-dot luminous fibers fabricated by centrifugal spinning for dual white light illumination and communication
JP6706771B2 (en) Organic light emitting material exhibiting room temperature phosphorescence and optical device using the same
CN113782680A (en) Perovskite quantum dot photoelectric detector based on MXene nanosheet optimization and preparation method thereof
Moura et al. Single bead near-infrared random laser based on silica-gel infiltrated with Rhodamine 640
CN104538828A (en) Solid random laser device for tuning wavelength through stretching method
Reilly et al. Rib waveguide dye-doped polymer amplifier with up to 26 dB optical gain at 625 nm
Anni A flexible organic random laser based on poly (9, 9-dioctylfluorene) deposited on a surface corrugated poly-phthalate-carbonate substrate
He et al. Capillary-based fluorescent antenna for visible light communications
Gupta et al. DNA-Ormocer based biocomposite for fabrication of photonic structures
Tankimanova et al. Colloidal PbS quantum dots for visible-to-near-infrared optical Internet of Things
CN108777431A (en) A method of realizing that double spontaneous radiations are amplified using organic laser gain media film
Imsick et al. Thin-film ratiometric fluorescent chemosensors with tunable performance characteristics
Yang et al. Amplified spontaneous emission from all-inorganic perovskite on a flexible substrate with silk fibroin
Chen et al. Frequency up-converted lasing in polymeric composites with two-photon absorbing antenna
Yeh et al. Photoluminescence enhancement of amino-functionalized graphene quantum dots in two-dimensional optical resonators

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant