CN108173114A - A kind of miniaturization Ramar laser - Google Patents
A kind of miniaturization Ramar laser Download PDFInfo
- Publication number
- CN108173114A CN108173114A CN201611115349.5A CN201611115349A CN108173114A CN 108173114 A CN108173114 A CN 108173114A CN 201611115349 A CN201611115349 A CN 201611115349A CN 108173114 A CN108173114 A CN 108173114A
- Authority
- CN
- China
- Prior art keywords
- laser
- raman
- hysteroscope
- output coupling
- output
- 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.)
- Pending
Links
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
- H01S3/30—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
- H01S3/305—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 a gas
-
- 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
- H01S3/105—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
This sharp Raman is a kind of efficient laser frequency means, the advantage is that the design of its device is simple, debugging is convenient, and can realize a plurality of types of laser frequency conversions, and wavelength conversion span is bigger, and variable wavelength enriches.Using the excited Raman conversion method of additional chamber feedback enhancing in the present invention, Raman pond outside, which increases a raman laser oscillation chamber, can realize oscillation of the raman laser in Raman pond, be conducive to the feedback amplification of raman laser.The output of two level Raman wavelength can be realized by hysteroscope institute plated film selection index system.Compared to common gas Raman converter plant, the advantage of the invention is small, and can realize the efficient output of middle infrared wavelength.Plating membrane system difference by hysteroscope can realize that output wavelength selects.It is different by selected oscillation lumen type, it can realize the optimization of output laser-quality.The invention is a kind of Raman converter plant for minimizing special wavelength output.
Description
Technical field
The present invention is a kind of miniaturization Ramar laser, vibrates the design of chamber using raman laser to realize pumping laser
Conversion to long wavelength laser, invention design is a kind of efficient optical maser wavelength conversion equipment.
Technical background
Laser is a kind of special light sources, and with monochromaticjty (output wavelength is single), but single laser is not at present
All wavelength, particularly middle infrared spectral region can be generated, the laser that can directly export middle infrared wavelength is rare；Work at present
There are a series of chemical lasers of HF, DF etc. and the Solid State Laser of some special doping in the laser of middle infrared wavelength；Chemistry
Laser is bulky, and system is numerous and diverse, uses and discharged toxic and harmful gas at work, and practical has very big be stranded
Difficulty is unfavorable for promoting the use of on a large scale；Although can realize that middle infrared wavelength exports by the Solid State Laser of special doping,
At present also in conceptual phase, the ripe application of distance also needs to certain search time；In order to enrich wavelength type, meet not
Same application demand, it is necessary to be converted to current existing optical maser wavelength, needs are generated by excited Raman conversion
Middle infrared wavelength.
Excited Raman is a kind of effective laser frequency means, the advantage is that the design of its device is simple, debugs convenient, wave
Long transformation span is bigger, and variable wavelength enriches.
The invention is a kind of device for minimizing middle infrared wavelength output；Become in invention using the excited Raman of chamber enhancing
Frequency method, Raman pond outside, which increases raman laser oscillation chamber, can realize oscillation of the raman laser in Raman pond, be conducive to draw
The feedback amplification of graceful laser；The output of two level Raman wavelength can be realized by hysteroscope institute plated film selection index system；Compared to common
Gas Raman converter plant, the advantage of the invention is small, and can realize the efficient output of middle infrared wavelength；Transit chamber
Mirror, which plates membrane system difference, can realize that output wavelength selects；It is different by selected oscillation lumen type, it can realize output laser
The optimization of quality.
Invention content
It is an advantage of the invention that minimize and can obtain the raman laser of middle infrared wavelength.Its process is：Pumping laser
It is incident in Raman medium by focusing on, generates Raman optical signal after pumping laser and the effect of Raman medium, then Raman light is believed
It number is vibrated in raman cavity, gain, amplification is transformed into raman laser, last raman laser is exported by output coupling cavity mirror.
Technical scheme is as follows：
The Ramar laser of infrared output, chief component have three parts in a kind of：Pump laser, Raman pond with
And raman laser oscillation chamber.
Pump laser using the Ramar laser frequency conversion is the Nd of output wavelength 1064nm:YAG laser.
Raman pond is the hollow airtight chamber that a both ends are respectively provided with window, window plating pumping laser and raman laser
High transmittance film；Deuterium or methane are filled in the Raman pond of Ramar laser.
Hysteroscope and the moon odontoscope that the shape of output coupling mirror is round sheet, surface is coated with the reflection and transmission of specific wavelength
Deielectric-coating.
Raman laser oscillation chamber is made of hysteroscope and output coupling mirror, is respectively disposed on Raman pond both ends；The drawing of generation
Graceful laser multipass in Raman pond can realize the gain amplification of raman laser in this process；In the invention, such as
The use of pump light is 1064nm using deuterium as Raman medium, the level-one Raman wavelength of generation is 1559nm, two level Raman wave
A length of 2920nm, the course of work can be described as：The Raman signal of 1559nm is generated after the injection of 1064nm laser in Raman pond
Light, 1559nm is vibrated in intracavitary and gain is amplified, and generates two level Raman light 2920nm signals by four-wave mixing process, two level is drawn
Graceful light consumes level-one raman laser in oscillatory process, and 2920nm wavelength is exported eventually by output coupling cavity mirror；In the process
Middle 1064nm laser once-through, 1559nm laser are vibrated in intracavitary and are not exported, can maximize to two level Raman 2920nm
Conversion, two level raman laser 2920nm are vibrated and are exported in raman cavity.
Shown in Fig. 1 in reference to the accompanying drawings,
The invention includes：Pump laser 1, hysteroscope 2, gas Raman pond 3, output coupling mirror 4；It is characterized in that：With pump
The laser that Pu laser 1 exports is optical axis, and pump laser 1, hysteroscope 2, Raman pond 3 and output coupling mirror are set gradually along optical axis
4；Wherein 2,3,4 constitute Raman oscillation chamber.
Pump laser 1 can be arbitrary solid Nd:YAG laser.
2 material of hysteroscope is JGS3, and contour structures are moon odontoscope, and convex surface is non-spherical structure, and concave surface is spherical structure, whole
Body plays focussing force to transmission laser, and convex surface is coated with pumping laser high transmittance film, and concave surface is coated with pumping laser high transmittance film and level-one
With two level raman laser high-reflecting film, its contour structures of output coupling mirror 4 are identical with 2 structure of hysteroscope, convex surface be coated with pumping laser and
Two level raman laser high transmittance film, concave surface plated film make pumping laser is high thoroughly, level-one raman laser is high instead to be exported with two level raman laser
Coupling.
Hysteroscope 2 and output coupling mirror 4 form concentric cavity, and hysteroscope 2 will play focussing force to the pumping laser of transmission, burnt
Away from 1/2 grown equal to concentric cavity；Raman pond 3 is placed between hysteroscope 2 and output coupling mirror 4.
Gas Raman pond 3 is the pipe that hollow both ends carry window, wherein filling pure deuterium gas or methane；3 window of Raman pond
Material is JGS3, and window is coated with the anti-reflection film of pumping laser, firsts and seconds raman laser.
The chamber that hysteroscope 2 and output coupling mirror 4 are formed can select a variety of oscillation lumen type (stablize, be situated between steady, unstable lumen type).
The invention has the advantages that the design of (1) Raman oscillation chamber can reduce excited Raman threshold value, Raman frequency conversion has been widened
The use scope of technology；(2) raman cavity is conducive to the efficient conversion of two level raman laser；(3) using gas as Raman medium
It can bear higher pump energy；(4) by hysteroscope surface coating, its output wavelength can be screened, its output wave can be made
Length is single, and transformation efficiency improves；(5) invention can select a variety of oscillation lumen type (to stablize, be situated between steady, unstable lumen type) realization pair
Export the optimization of laser-quality；Generally speaking, which is a kind of device for obtaining middle infrared wavelength.
Description of the drawings
Fig. 1 is a kind of Raman laser structure schematic diagram for minimizing middle infrared wavelength output,
Fig. 2 is the structure diagram of resonator,
Device name in figure is as follows：1- pump lasers；2- hysteroscopes；3- Raman ponds；4- output coupling cavity mirrors；Wherein 2,
3rd, 4 Ramar laser is constituted.
Specific embodiment
As shown in Figure 1, for detailed description of the present invention specific work process and application method, with reference to practical situations,
The specific embodiment illustrated the present invention.
Embodiment, Nd:The two level Raman wavelength output of YAG laser.
To realize to pulse Nd:The two level Raman of YAG laser is converted, and Continuum companies are used in the present embodiment
8000 pulse Nd of Powerlite:YAG laser is vibrated as pumping source, the deuterium of high-purity as Raman medium in Raman
Intracavitary generates the level-one Raman wavelength of 1559nm, the seed of two level raman laser 2920nm is generated by four-wave mixing, by shaking
Amplification two level raman laser is swung, is exported finally by output coupling mirror.
Raman oscillation chamber includes hysteroscope, Raman pond, output coupling mirror three parts；Stainless steel processing Raman pond is selected, and
Raman pond both ends carry the window of high-transmission rate, and the overall length of Raman pond is 20 centimeters, and what Raman pond filled has high-purity
Deuterium, air pressure are 1-7 megapascal.The contour structures of hysteroscope and output coupling mirror are in crescent shape, such as material JGS3, Fig. 2
Shown in middle mark, wherein surface 2 and surface 3 for its curvature of concave surface be 150 millimeters, surface 1 and 4 be convex surface and be it is aspherical, it is convex
Face is aspherical as obtained by mathematical computations, in short, the transmission focal length of moon odontoscope is 150 millimeters.Hysteroscope and output coupling mirror are each
The film that is plated on face is different, and 1064nm high transmittance films are plated on the surface 1 of hysteroscope, and surface 2 plates that 1064nm high is saturating and 1559nm, 2920nm high
Reflectance coating, the surface 3 of output coupling cavity mirror plate that 1064nm is highly transmissive, 1559nm high reflection 2920nm output couplings, and surface 4 is plated
1064nm and 2920nm high transmittance films；The concave surface of hysteroscope and the concave surface of output coupling mirror are opposite, and the distance on surface 2 to surface 3 is
300 millimeters or so.
The adjusting of Raman oscillation chamber is adjusted according to laser cavity adjusting method, all of above for the accurate adjusting to optical cavity
Equipment and device are according to the He-Ne produced again by Research Electro-Optics.Inc after Fig. 1 settings in attached drawing
The visible wavelength 632nm laser of laser is to entire optical path adjusting, specific way, first by Nd:What YAG laser was sent out swashs
Light and He-Ne laser close beam by dichroscope, subsequent to adjust with reference to 632nm laser.It can by the light path of 632nm laser
To judge the light path of 1064nm.
All devices will block 632nm laser after being adjusted by 632nm laser, to prevent Solid State Laser or Raman
The light echo of laser enters He-Ne lasers.
Claims (6)
1. a kind of miniaturization Ramar laser, including：Pump laser (1), hysteroscope (2), gas Raman pond (3), output coupling
Mirror (4)；It is characterized in that：Using the laser of pump laser (1) output as optical axis, hysteroscope (2), Raman pond are set gradually along optical axis
(3) and output coupling mirror (4)；Wherein hysteroscope (2), Raman pond (3) and output coupling mirror (4) constitute raman laser oscillation chamber.
2. miniaturization Ramar laser according to claim 1, it is characterised in that：Pump laser (1) can be arbitrary
A kind of laser.
3. miniaturization Ramar laser according to claim 1, it is characterised in that：Hysteroscope (2) using transparent material, outside
Shape structure is moon odontoscope, and convex surface is aspherical smooth surface structure, and concave surface (towards output coupling mirror side) is spherical structure,
Whole that focussing force is played to transmission laser, convex surface is coated with pumping laser high transmittance film, and concave surface is coated with the high saturating, level-one and two of pumping laser
The high anti-film of grade raman laser, output coupling mirror (4) are that (concave surface is towards hysteroscope one for identical with hysteroscope (2) shape moon odontoscope
Side), convex surface is coated with pumping laser and two level raman laser high transmittance film, and concave surface plated film makes high saturating, the level-one raman laser of pumping laser
It is high anti-, and two level raman laser output coupling rate is T (the output coupling wavelength reflection of output coupling mirror is more than 90%).
4. the miniaturization Ramar laser according to claim 1 or 3, it is characterised in that：Hysteroscope (2) and output coupling mirror
(4) concentric cavity is formed；Hysteroscope (2) plays the pumping laser of transmission focussing force, and focal length is equal to the 1/2 of concentric cavity length；It draws
Man Chi (3) is positioned between hysteroscope (2) and output coupling mirror (4), and the geometric center of concentric cavity is in Raman pond (3).
5. the miniaturization Ramar laser according to claim 1 or 4, it is characterised in that：Gas Raman pond (3) be it is hollow and
Both ends carry transparent window container, wherein fill one or both of pure deuterium gas, methane or other Raman active media with
On；Raman pond (3) window is transparent material, and is coated with the anti-reflection film of pumping laser, firsts and seconds raman laser.
6. the miniaturization Ramar laser according to claim 1 or 4, it is characterised in that：Hysteroscope (2) and output coupling mirror
(4) chamber formed can select a variety of oscillation lumen type, such as stablize, and be situated between steady or unstable lumen type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611115349.5A CN108173114A (en) | 2016-12-07 | 2016-12-07 | A kind of miniaturization Ramar laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611115349.5A CN108173114A (en) | 2016-12-07 | 2016-12-07 | A kind of miniaturization Ramar laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108173114A true CN108173114A (en) | 2018-06-15 |
Family
ID=62526129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611115349.5A Pending CN108173114A (en) | 2016-12-07 | 2016-12-07 | A kind of miniaturization Ramar laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108173114A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4048516A (en) * | 1976-12-02 | 1977-09-13 | Gte Sylvania Incorporated | Laser apparatus for producing stimulated Raman scattering |
| US5222093A (en) * | 1989-12-01 | 1993-06-22 | Thomson-Csf | High wavelength laser device |
| US5265106A (en) * | 1991-06-10 | 1993-11-23 | Compagnie Industrielle Des Lasers Cilas | Raman Laser |
| CN1476131A (en) * | 2003-06-27 | 2004-02-18 | 中国科学院上海光学精密机械研究所 | Multi-wavelength solid harmonic Raman laser |
| US20050163169A1 (en) * | 2003-10-22 | 2005-07-28 | Spectra Systems Corporation | Solid state diamond Raman laser |
| CN102946048A (en) * | 2012-11-26 | 2013-02-27 | 山东大学 | Raman laser based on crystalline in fresnoite structure |
| CN104953463A (en) * | 2014-03-27 | 2015-09-30 | 中国科学院大连化学物理研究所 | Low-pulse power laser pumping gas medium Raman laser |
| CN105024275A (en) * | 2014-04-25 | 2015-11-04 | 中国科学院大连化学物理研究所 | High-order Stokes light generation device |
| CN105390931A (en) * | 2015-12-21 | 2016-03-09 | 山东省科学院新材料研究所 | All-solid Raman laser based on calcite type orthoborate crystal |
-
2016
- 2016-12-07 CN CN201611115349.5A patent/CN108173114A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4048516A (en) * | 1976-12-02 | 1977-09-13 | Gte Sylvania Incorporated | Laser apparatus for producing stimulated Raman scattering |
| US5222093A (en) * | 1989-12-01 | 1993-06-22 | Thomson-Csf | High wavelength laser device |
| US5375131A (en) * | 1989-12-01 | 1994-12-20 | Thomson-Csf | Tuneable laser device using a gas enclosure optical cavity |
| US5265106A (en) * | 1991-06-10 | 1993-11-23 | Compagnie Industrielle Des Lasers Cilas | Raman Laser |
| CN1476131A (en) * | 2003-06-27 | 2004-02-18 | 中国科学院上海光学精密机械研究所 | Multi-wavelength solid harmonic Raman laser |
| US20050163169A1 (en) * | 2003-10-22 | 2005-07-28 | Spectra Systems Corporation | Solid state diamond Raman laser |
| CN102946048A (en) * | 2012-11-26 | 2013-02-27 | 山东大学 | Raman laser based on crystalline in fresnoite structure |
| CN104953463A (en) * | 2014-03-27 | 2015-09-30 | 中国科学院大连化学物理研究所 | Low-pulse power laser pumping gas medium Raman laser |
| CN105024275A (en) * | 2014-04-25 | 2015-11-04 | 中国科学院大连化学物理研究所 | High-order Stokes light generation device |
| CN105390931A (en) * | 2015-12-21 | 2016-03-09 | 山东省科学院新材料研究所 | All-solid Raman laser based on calcite type orthoborate crystal |
Non-Patent Citations (2)
| Title |
|---|
| YOUNG HO PARK ET AL.: "Development of the 2.8μm emission doubly shifted Raman laser using stimulated brillouin scattering in a cascaded cavity", 《APPLIED OPTICS》 * |
| 陈慧挺 等: "高效率599nm Ba(NO3)2外腔喇曼激光器", 《光子学报》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103036140B (en) | A kind of blue-violet laser based on frequency multiplication vapour of an alkali metal laser | |
| CN103872576B (en) | The closely homocentric stable cavity gas Raman laser instrument of one kind | |
| CN107526176A (en) | The method that intracavitary directly produces exponent number adjustable cyclone light beam | |
| US4717842A (en) | Mode-matched laser/raman coupled unstabled resonators | |
| CN102244346A (en) | End-pumped laser utilizing half-wave plates | |
| CN115347446A (en) | Microsecond pulse sodium guide star laser system | |
| CN104600552B (en) | A kind of single-crystal diamond continuous wave tunable deep ultraviolet lasers | |
| CN106684696A (en) | External cavity Raman laser machine for two stage combined use | |
| CN105633791B (en) | A kind of more light path Ramar lasers of shrink beam | |
| US3805187A (en) | Damage resistant tunable cw dyelaser | |
| CN109031674A (en) | The intracavitary method for directly generating more vortex beams | |
| CN106684695A (en) | External-cavity anti-stokes Raman laser | |
| CN110265863A (en) | A kind of intracavitary anti-Stokes Raman laser and excited Raman blue shift wavelength maximize output method | |
| CN108173114A (en) | A kind of miniaturization Ramar laser | |
| CN107104361A (en) | A kind of miniaturization blue laser of semiconductor laser direct frequency doubling | |
| CN105024275B (en) | A kind of high-order Stokes light generating device | |
| CN103066491A (en) | High-repetition frequency blue violet laser | |
| CN110865053A (en) | Device and method for measuring energy transmission up-conversion heat transfer load in laser gain crystal | |
| CN207638146U (en) | Continuous wave 593nm optical parametric oscillators and optical device | |
| CN112186493A (en) | Novel two-photon pumping rubidium steam blue laser based on hollow-core photonic crystal fiber | |
| CN102208740A (en) | Nanosecond pulse fiber laser with circle structure | |
| CN106340797A (en) | 2[miu] tunable laser for body grating based and structured ring cavity optical parametric oscillator | |
| CN102870295A (en) | Device and method for generating laser | |
| CN207518050U (en) | A kind of miniaturization blue laser of semiconductor laser direct frequency doubling | |
| CN107482433B (en) | Optical parametric oscillator |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180615 |