CN112382918A - Dye laser - Google Patents
Dye laser Download PDFInfo
- Publication number
- CN112382918A CN112382918A CN202011327558.2A CN202011327558A CN112382918A CN 112382918 A CN112382918 A CN 112382918A CN 202011327558 A CN202011327558 A CN 202011327558A CN 112382918 A CN112382918 A CN 112382918A
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- CN
- China
- Prior art keywords
- gain medium
- dye laser
- reflector
- optical fiber
- medium body
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- 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.)
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- 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
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
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- 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
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- 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
- H01S3/094049—Guiding of the pump light
- H01S3/094053—Fibre coupled pump, e.g. delivering pump light using a fibre or a fibre bundle
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- 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
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/20—Liquids
- H01S3/213—Liquids including an organic dye
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
A dye laser belongs to the technical field of dyes. The dye laser comprises a light source, and a transmission optical fiber, a frequency doubling module, a reflector, a cylindrical gain medium body and an output mirror which are sequentially arranged along the output direction of the light source; the reflector and the output mirror are arranged at two ends of the cylindrical gain medium body, the reflector, the output mirror and the cylindrical gain medium body form a resonant cavity, and the output mirror outputs a stable laser beam. The invention has simple structure, high miniaturization degree and high light energy utilization rate.
Description
Technical Field
The invention relates to the technical field of lasers, in particular to a dye laser.
Background
Dye lasers are lasers in which certain organic dyes are dissolved in certain solvents (methanol, ethanol, water, etc.) as active media. Dye lasers are one of the indispensable tools for laser spectroscopy. The high-resolution laser spectrum is used for researching the hyperfine structure of a substance; the temporal and spatial high-resolution spectroscopy of ultrashort pulses is used to study transient changes and microscopic kinetic processes of substances. The laser spectroscopy is used industrially to analyze substances with high sensitivity in minute or ultra-minute quantities. In addition, dye lasers also have very important applications in isotope separation, photochemistry, atmospheric pollution monitoring, and the like. The existing dye laser is a liquid dye laser made by dissolving laser dye in organic solvent, which needs to use a large amount of organic solvent. The existing dye laser has the defects of large structure, troublesome use, toxicity, easy ignition and the like.
The invention patent application CN201510882979.4 discloses a method for obtaining high repetition frequency and large energy tunable laser, and specifically discloses a method for performing time domain modulation on high repetition frequency pump pulse laser, wherein output pump pulse string laser is incident on a first reflection prism after being shaped by a beam shaping system, and is incident to a dye box through the refraction of the first reflection prism, a dye solution in the dye box is excited by the pump pulse laser and is incident to a resonant cavity formed by an output coupling mirror, a grating and a tuning mirror, a beam expander is inserted in the resonant cavity to prevent the grating from being damaged by the laser in the cavity, and the pump pulse laser output by the output coupling mirror is reflected out through a second reflection prism and a third reflection prism by rotating the angle of the tuning mirror to realize the tuning of laser wavelength. The invention adopts dye solution, and needs a plurality of optical devices to finish the output of target laser together, thus the required dye laser has huge structure and complex operation.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the dye laser which is simple in structure, high in miniaturization degree and high in light energy utilization rate.
The invention is realized by the following technical scheme:
a dye laser comprises a light source, and a transmission optical fiber, a frequency doubling module, a reflector, a cylindrical gain medium body and an output mirror which are sequentially arranged along the output direction of the light source; the reflector and the output mirror are arranged at two ends of the cylindrical gain medium body, the reflector, the output mirror and the cylindrical gain medium body form a resonant cavity, and the output mirror outputs a stable laser beam.
The dye laser combines the dye and the optical fiber, and forms a resonant cavity output light beam through the reflector, the output mirror and the cylindrical gain medium body, so that an organic solvent and a circulating flow device used by a liquid dye laser are omitted, and the dye laser has the advantages of small volume, convenience in use and operation, and no toxicity or flammable danger. The dye in the cylindrical gain medium body is excited by the laser light source to emit fluorescence, a stable optical mode is formed in the resonant cavity, and the light emitting effect with high light energy utilization rate can be output.
Preferably, the frequency doubling module comprises a focusing lens, a frequency doubling crystal and a collimator; the light emitted by the transmission optical fiber sequentially passes through the focusing lens, the frequency doubling crystal and the collimator and then enters the reflector.
Preferably, the frequency doubling module further comprises a dichroic filter, and the dichroic filter is disposed between the collimator and the reflector.
Preferably, the frequency doubling crystal is a second harmonic crystal or a third harmonic crystal.
Preferably, the transmission fiber is one of a single mode fiber, a multimode fiber, a photonic crystal fiber, a graded index fiber and a liquid core fiber.
Preferably, the cylindrical gain medium body is a hollow-core optical fiber sleeve filled with a gain medium.
Preferably, the radius of the cylinder formed by filling the gain medium in the optical fiber sleeve is larger than the thickness of the optical fiber sleeve.
Preferably, the radius of the cylinder formed by filling the gain medium in the optical fiber sleeve is 1.2 times of the thickness of the optical fiber sleeve.
Preferably, the light source is a pulsed YAG laser light source.
Preferably, the reflector is fixed to the front end face of the cylindrical gain medium body through a bracket, and the output mirror is fixed to the rear end face of the cylindrical gain medium body through a bracket.
The invention has the following beneficial effects:
the dye laser has stable power, simple structure and easy adjustment; the efficiency of visible light wave band is high, the wavelength is stable, and the coverage spectrum range is wide; the method is suitable for spectroscopy, photochemistry, laser biology and atmospheric environment detection.
Drawings
FIG. 1 is a schematic diagram of a dye laser of the present invention;
fig. 2 is a cross-sectional view of the cylindrical gain medium body of fig. 1.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, the dye laser includes a light source 1, and a transmission fiber 2, a frequency doubling module 3, a reflector 4, a cylindrical gain medium 5, and an output mirror 6 sequentially arranged along an output direction of the light source. The reflector 4 and the output mirror 6 are arranged at two ends of the cylindrical gain medium body 5, the reflector 4, the output mirror 6 and the cylindrical gain medium body form a resonant cavity, and the output mirror 6 outputs a stable laser beam.
The light source is a pulse YAG laser light source. The laser beam emitted by the light source is sequentially input into the frequency doubling module, the reflector, the cylindrical gain cut-off body and the output mirror through the transmission optical fiber. The laser beam penetrates through the reflector to enter the cylindrical gain medium body, the gain medium in the cylindrical gain medium body is excited, a stable optical mode is formed in the resonant cavity, and then the stable laser beam is output.
The transmission fiber is one of a single mode fiber, a multimode fiber, a photonic crystal fiber, a gradient fiber and a liquid core fiber.
The frequency doubling module comprises a focusing lens, a frequency doubling crystal and a collimator. The light emitted by the transmission optical fiber sequentially passes through the focusing lens, the frequency doubling crystal and the collimator and then enters the reflector. The frequency doubling crystal is a second harmonic crystal or a third harmonic crystal and can be selected according to the requirement of light intensity gain. And the axes of the frequency doubling crystals are coaxial with the laser light path.
The frequency doubling module further comprises a double-color sheet, and the double-color sheet is arranged between the collimator and the reflector. The laser beam is sent to the frequency doubling crystal through the focusing lens for frequency doubling, then is calibrated through the collimator, and then is filtered through the double-color sheet, so that the green light penetrates through the collimator and then is sent into the resonant cavity, and finally, the dye laser is output through the output mirror.
The cylindrical gain medium body is an optical fiber sleeve filled with a hollow fiber core of the gain medium. That is, the cylindrical gain medium body includes a fiber ferrule 51 and a cylinder formed by filling a gain medium 52 in the fiber ferrule (see fig. 2). The gain medium is uniformly filled in the optical fiber sleeve. The radius of the cylinder formed by filling the gain medium in the optical fiber sleeve is larger than the thickness of the optical fiber sleeve, and preferably, the radius of the cylinder formed by filling the gain medium in the optical fiber sleeve is 1.2 times of the thickness of the optical fiber sleeve. Therefore, the laser beam can obtain higher laser output energy when entering the resonant cavity and then is output through the output mirror.
In order to ensure stable and efficient emission of laser beams, the reflector is fixed on the front end face of the cylindrical gain medium body through a support, and the output mirror is fixed on the rear end face of the cylindrical gain medium body through a support, so that the axes of the reflector, the cylindrical gain medium body and the output mirror are kept on the same straight line and are coaxial with a laser light path.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.
Claims (10)
1. A dye laser is characterized by comprising a light source, and a transmission optical fiber, a frequency doubling module, a reflector, a cylindrical gain medium body and an output mirror which are sequentially arranged along the output direction of the light source; the reflector and the output mirror are arranged at two ends of the cylindrical gain medium body, the reflector, the output mirror and the cylindrical gain medium body form a resonant cavity, and the output mirror outputs a stable laser beam.
2. The dye laser according to claim 1, wherein the frequency doubling module comprises a focusing lens, a frequency doubling crystal, a collimator; the light emitted by the transmission optical fiber sequentially passes through the focusing lens, the frequency doubling crystal and the collimator and then enters the reflector.
3. The dye laser of claim 2, wherein said frequency doubling module further comprises a dichroic filter, said dichroic filter being disposed between said collimator and said mirror.
4. The dye laser as claimed in claim 2, wherein the frequency doubling crystal is a second harmonic crystal or a third harmonic crystal.
5. The dye laser according to claim 1, wherein said transmission fiber is one of a single mode fiber, a multimode fiber, a photonic crystal fiber, a graded index fiber, and a liquid core fiber.
6. The dye laser of claim 1, wherein said cylindrical gain medium body is a hollow-core fiber ferrule filled with gain medium.
7. The dye laser as claimed in claim 6, wherein the radius of the cylinder formed by filling the optical fiber ferrule with the gain medium is larger than the thickness of the optical fiber ferrule.
8. The dye laser as claimed in claim 7, wherein the radius of the cylinder formed by filling the optical fiber ferrule with the gain medium is 1.2 times the thickness of the optical fiber ferrule.
9. The dye laser as claimed in claim 1, wherein said light source is a pulsed YAG laser source.
10. The dye laser as claimed in claim 1, wherein the reflecting mirror is fixed to a front end surface of the cylindrical gain medium body by a bracket, and the output mirror is fixed to a rear end surface of the cylindrical gain medium body by a bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011327558.2A CN112382918A (en) | 2020-11-24 | 2020-11-24 | Dye laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011327558.2A CN112382918A (en) | 2020-11-24 | 2020-11-24 | Dye laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112382918A true CN112382918A (en) | 2021-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011327558.2A Pending CN112382918A (en) | 2020-11-24 | 2020-11-24 | Dye laser |
Country Status (1)
| Country | Link |
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| CN (1) | CN112382918A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1323621A (en) * | 1970-01-26 | 1973-07-18 | Western Electric Co | Device for the emission of coherent radiation |
| CN2317564Y (en) * | 1997-12-23 | 1999-05-05 | 中国科学院安徽光学精密机械研究所 | Solid dye laser |
| CN104009378A (en) * | 2014-05-15 | 2014-08-27 | 深圳大学 | Visible light super-continuum spectrum light source based on green-light fiber laser pumping |
| CN104037614A (en) * | 2014-06-09 | 2014-09-10 | 高秀敏 | Optical fiber optofluidic dye laser |
| CN104064957A (en) * | 2014-05-09 | 2014-09-24 | 杭州电子科技大学 | Adjustable and controllable optical flow control dye laser based on electrorheological effect |
-
2020
- 2020-11-24 CN CN202011327558.2A patent/CN112382918A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1323621A (en) * | 1970-01-26 | 1973-07-18 | Western Electric Co | Device for the emission of coherent radiation |
| CN2317564Y (en) * | 1997-12-23 | 1999-05-05 | 中国科学院安徽光学精密机械研究所 | Solid dye laser |
| CN104064957A (en) * | 2014-05-09 | 2014-09-24 | 杭州电子科技大学 | Adjustable and controllable optical flow control dye laser based on electrorheological effect |
| CN104009378A (en) * | 2014-05-15 | 2014-08-27 | 深圳大学 | Visible light super-continuum spectrum light source based on green-light fiber laser pumping |
| CN104037614A (en) * | 2014-06-09 | 2014-09-10 | 高秀敏 | Optical fiber optofluidic dye laser |
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Application publication date: 20210219 |
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| RJ01 | Rejection of invention patent application after publication |