CN1161865C - Laser with resonance cavity including circular cone prism being top in shape - Google Patents
Laser with resonance cavity including circular cone prism being top in shape Download PDFInfo
- Publication number
- CN1161865C CN1161865C CNB998168483A CN99816848A CN1161865C CN 1161865 C CN1161865 C CN 1161865C CN B998168483 A CNB998168483 A CN B998168483A CN 99816848 A CN99816848 A CN 99816848A CN 1161865 C CN1161865 C CN 1161865C
- Authority
- CN
- China
- Prior art keywords
- laser
- operation material
- circular cone
- resonant cavity
- prism
- 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 - Fee Related
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
- H01S3/05—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
- H01S3/08059—Constructional details of the reflector, e.g. shape
-
- 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
- H01S3/06—Construction or shape of active medium
- H01S3/0619—Coatings, e.g. AR, HR, passivation layer
- H01S3/0621—Coatings on the end-faces, e.g. input/output surfaces of the laser light
-
- 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
- H01S3/06—Construction or shape of active medium
- H01S3/07—Construction or shape of active medium consisting of a plurality of parts, e.g. segments
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Laser Surgery Devices (AREA)
- Lasers (AREA)
- Gyroscopes (AREA)
Abstract
The present invention relates to a laser with high misalignment resistant stability and high quality of laser beams, which is characterized in that a rectangular conical prism is used as a total reflection mirror of a resonant cavity; a novel debugging-free resonant cavity is composed of the rectangular conical prism and partial irradiation film as an output mirror plated on the end face of a solid laser stick. The resonant cavity of the laser has simple structure, convenient operation and high misalignment resistant capability and stability, outputs lasers after being assembled without debugging, and improves the quality of laser beams. The conical prism can be made from optical glass, quartz, ruby crystals, sapphire crystals, calcium fluoride or tin-zinc compounds, etc. The present invention can be widely used in the fields of military affairs, industrial processing, medical treatment, scientific researches, etc.
Description
The present invention relates to the laser technique field, more specifically to the resonant cavity of laser, it can be used for constituting the resonant cavity of solid state laser, gas laser, excimer laser etc.
Widely-used plane-parallel resonator of laser and sphere chamber are as its resonant cavity at present.When the cavity mirror misalignment in these chambeies (when chamber mirror and optical axis out of plumb), the chamber mirror departs from former optical axis, causes the chamber modingization, and loss strengthens, and laser output energy sharply descends.The cavity mirror misalignment angle of laser needs the special mechanism that accurately regulates resonant cavity of two covers generally in the minute, second magnitude, and this brings inconvenience for the use of laser.
Cause problems such as laser output instability, beam quality difference because of cavity mirror misalignment for overcoming resonant cavity, people set about from aspects such as design of chamber type and reinforcement chamber illuminating apparatus tool structures for a long time, try hard to head it off.Two intersections of U.S. Pat 3924201 usefulness right-angle prism constitutes Borrow's prism resonant cavity.Chinese patent CN87216562 has proposed the corner cube folded resonator.Though the chamber of these two kinds of structures has been improved imbalance stability, its complex structure, installation and debug difficulties to a certain extent.Chinese patent application 98113402.5 discloses a kind of adjust-free solid laser, and it is made of laser bar, laser pump cavity, pumping lamp, pump supply source, it is characterized in that placing the tetrahedron directional prism and make its angle overhead on the axis of laser before laser bar.This patent application utilizes the speculum of tetrahedron directional prism formation resonant cavity, and is simple in structure, do not need complicated adjusting mechanism, bigger to error angle and site error redundancy.But it is luminous that this laser is not suitable for continuously, and the polarization state that the near field pattern is " rice " word shape and light beam will change.This tetrahedral directional prism processing difficulties of while, seamed edge is big to laser loss, goes out the photo threshold height.
Therefore realize that it is a difficult problem and the key technology that influences laser application that laser can obtain stable laser output, acquisition high light beam quality and high anti-imbalance stability without debugging after installation.
The objective of the invention is to overcome the problem that aforementioned existing laser exists, provide a kind of dysfunctional simple in structure, anti-by force, the laser resonant cavity structure that need not debug, even by its laser that constitutes in judder with also can obtain stable high-quality laser output under the adverse circumstances of variations in temperature significantly.
Laser of the present invention is characterised in that at an end of operation material places the total reflective mirror of right angle circular cone prism as resonant cavity, at the other end placement part speculum of the operation material laser output mirror as resonant cavity.When work object is solid, also can plate the laser output mirror of anti-film (partial reflection film) at the end face of solid operation material as resonant cavity.Top, the angle of described right angle circular cone prism is placed on the optical axis of operation material, and the angle (cone-apex angle) between crossing two buses of face that diameter limited of the vertex of a cone and bottom surface and taper seat is 90 ° ± 5 ".But some is cylindric for the bottom of circular cone prism, so that install, at this moment whole prism looks like a gyro.The rotation axes of symmetry of top in shape circular cone prism is vertical with its bottom surface, and the bottom surface of top in shape circular cone prism also can be plated with laser and be gone out the anti-reflection film of optical wavelength to reduce loss.
Described operation material can be solid, gas, dyestuff, quasi-molecule material etc.The resonant cavity that provides can be used in lamp pumping or the semiconductor laser pumping system, can insert characteristic and the purposes of various optical elements (as the polarizer, Q switched element etc.) to improve laser in the chamber in the light path.
The optical material of making top in shape circular cone prism is looked the difference of operation material, laser center wavelength and is selected, as optical glass, quartz, ruby crystal, sapphire crystal, calcirm-fluoride or tin zinc etc.The inventor finds, when the top in shape right angle circular cone prism that uses sapphire crystal to make during as the total reflective mirror of resonant cavity, and can be at continuous Nd: obtain best characteristic in YAG solid state laser and the excimer laser.
Describe structure of the present invention with reference to the accompanying drawings in detail.
Fig. 1 is the high anti-dysfunctional of the present invention and the resonant cavity of high light beam quality and the structural representation of embodiment 1;
Fig. 2 is the light path end view of top in shape prism 1;
Fig. 3-7 is the structural representation of the various embodiment of resonant cavity of solid state laser of the present invention.
Fig. 1 is the structural representation of the anti-imbalance stability of height of the present invention and high light beam quality resonant cavity and embodiment 1, and operation material 2 is Nd in the present embodiment
3+: the YAG crystal, the one end is placed the gyro prism, top, the angle of top in shape right angle circular cone prism 1 O is positioned on the axis of operation material 2, be coated with on the other end of operation material 2 anti-film as outgoing mirror 3 or operation material 2 other ends place outgoing mirror 3 ', constitute resonant cavity.Can guarantee that like this operation material 2 inner laser radius return operation material 2 by former direction after circular cone prism 1 total internal reflection of top in shape right angle, form vibration, realize that laser generation is amplified and output; In addition, be solidificated on the wherein end face of operation material 2 (other end plating anti-reflection film), then can have the debug function of exempting from after the assembling if partially reflecting mirror 3 is direct plated films.
Fig. 2 is the end view of gyro controlled mirror 1, and its operation principle is: at first, be incident in the light of top in shape right angle circular cone prism 1 by the bottom surface, behind bus or conical reflecting, emergent ray is parallel to incident ray, when top in shape prism 1 rotates around top, angle O, can never cause the variation of reflection ray direction.Secondly, no matter which kind of angle incident incident ray becomes with the bottom surface, its incident ray and emergent ray are being looked along radiation direction, and the summit O of its projection and gyro prism 1 is centrosymmetric.
Fig. 3 is the structural representation of hollow bar resonant cavity of the present invention and embodiment 2, and operation material is a hollow cylinder rod 2, and the formation of resonant cavity, placement and operation principle are identical with embodiment 1, are not described in detail in this.
Fig. 4 is the structural representation of collapsible two-rod series connection embodiment 3 of the present invention, with two operation material 2a, 2b is symmetrical in the both sides of 1 jiao of top of top in shape prism O, and promptly wherein the end face plating total reflection film of an operation material 2a becomes completely reflecting mirror 9, at other end A face plating anti-reflection film; The end face of second operation material 2b plates anti-film, becomes partially reflecting mirror 4, at other end plating anti-reflection film.Constitute two serial connection vibration resonant cavitys thus.
Fig. 5 is the structural representation of collapsible two-rod series connection embodiment 4 of the present invention, and with two operation material 2a, 2b is symmetrical in the both sides of 1 jiao on top in shape prism top O, and promptly the end face plating total reflection film of an operation material 2a wherein becomes completely reflecting mirror 9; Plate anti-film in the other end, become partial reflection film 4, constitute oscillator stage.The both ends of the surface A of second operation material 2bB, B all plate anti-reflection film, as amplifying stage.
Fig. 6 is an another kind of folded resonator example structure schematic diagram of the present invention, and top in shape prism 1 constitutes collapsible optical resonator as dioptric apparatus.Two speculums of resonant cavity (completely reflecting mirror 9, partially reflecting mirror 4) are to plate with the film of different reflectivity respectively to constitute on same optical substrate.If light path is only placed an operation material in the chamber, then two speculums of the resonant cavity of Gou Chenging and top in shape prism all need not accurate adjustment.If place two operation materials in the chamber on the light path, then this structure is identical with embodiment 3 or 4.
Fig. 7 is the enforcement schematic diagram of collapsible multichannel multiband output cavity of the present invention.Operation material 2 is pressed the array symmetry on the axis of crossing gyro prism angle top O among Fig. 7, and operation material array 2 one ends (near the gyro prism) all plate anti-reflection film, and the other end all plates anti-film (different wave length film system).The resonant cavity that they and gyro controlled mirror 1 forming array structure multichannel multiband are exported is applicable to the LD light-pumped solid state laser.
The present invention compared with prior art has the following advantages and effect:
1. the resonator of top in shape right angle circular cone prism formation has very strong anti-imbalance ability, top The summit of spiral shell shape prism optical axis and near on the time imbalance angle that allows reach ± 20 °. Can obtain to stablize exempting from of Output of laser without debugging after can realizing in the solid state laser installing Debug function.
2. top in shape right angle circular cone prism mirror has parallel total internal reflection characteristic, angle modeling characteristic and The phase conjugation effect makes that optical field distribution is tending towards evenly in oscillatory process, output light far field The angle of divergence is little, at a low price mould output, good beam quality.
3. the laser structure that consists of is simple, easy for installation, and dependable performance is convenient to maintenance, Can be made into modular unit. When especially adopting sapphire crystal to make circular cone prism, can Acquisition is exported up to the continuous light of hectowatt magnitude, and can be big in vibration or variation of ambient temperature Adverse circumstances under steady operation. The laser instrument that the present invention consists of can be widely used in medical treatment, The fields such as scientific research, industrial processes, military affairs.
Claims (8)
1. laser, comprise operation material, energy source resonant cavity, it is characterized in that, the total reflective mirror of resonant cavity is made of the right angle circular cone prism, the vertex of a cone of described circular cone prism is placed on the optical axis of laser outwardly, constitute resonant cavity with the partially reflecting mirror as outgoing mirror, the cone-apex angle of described circular cone prism is 90 ° ± 5 ".
2. according to the laser of claim 1, it is characterized in that one section cylinder is also stretched out in the bottom of described right angle circular cone prism, fusing with it constitutes the top in shape circular cone prism so that install.
3. according to the laser of claim 1 or 2, be characterised in that described conical prism is made by optical glass, quartz, ruby crystal, sapphire crystal, calcirm-fluoride or tin zinc.
4. by claim 1 or 2 described lasers, it is characterized in that: when operation material is solid bar, plate anti-film as laser output mirror at an end face of this operation material.
5. by claim 1 or 2 described lasers, it is characterized in that: when operation material was two, an end face of an operation material plated the film that is all-trans, other end plating anti-reflection film, and another root operation material one end plating anti-reflection film.The axis that other end plating partial reflection film, two operation materials are symmetrical in the gyro circular cone prism vertex of a cone is placed in the resonant cavity, constitutes two serial connections resonant cavitys that vibrate.
6. by claim 1 or 2 described lasers, it is characterized in that: when operation material was one, this operation material was formed into the hollow cylinder shape.
7. by claim 1 or 2 described lasers, it is characterized in that: when operation material is many, operation material was symmetrically distributed in the axis that push up at the circular cone prism angle by array, and at the end face plating anti-reflection film of operation material near circular cone prism, anti-film is plated in the other end.
8. by the described laser of claim 1, it is characterized in that: operation material comprises solid, gas, dyestuff, quasi-molecule material.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN1999/000105 WO2001009993A1 (en) | 1999-08-02 | 1999-08-02 | A laser with the resonance cavity including a circular cone prism being top in shape |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1379924A CN1379924A (en) | 2002-11-13 |
| CN1161865C true CN1161865C (en) | 2004-08-11 |
Family
ID=4575130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB998168483A Expired - Fee Related CN1161865C (en) | 1999-08-02 | 1999-08-02 | Laser with resonance cavity including circular cone prism being top in shape |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN1161865C (en) |
| AU (1) | AU5146699A (en) |
| WO (1) | WO2001009993A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100367582C (en) * | 2006-03-15 | 2008-02-06 | 华中科技大学 | Tuning laser resonance cavity |
| CN100367581C (en) * | 2006-03-15 | 2008-02-06 | 华中科技大学 | High-power laser resonance cavity |
| CN100405678C (en) * | 2006-03-15 | 2008-07-23 | 华中科技大学 | Combined holophote laser resonant cavity composed of right-angle round platform inboard surface and right-angle taper outboard surface |
| CN101216314B (en) * | 2008-01-14 | 2010-06-02 | 浙江大学 | Resonance type optical gyroscope digital closed loop system frequency feedback and tracking locking apparatus and method |
| WO2015074244A1 (en) * | 2013-11-22 | 2015-05-28 | 深圳市大族激光科技股份有限公司 | Radial polarization thin-disk laser |
| CN105324890B (en) | 2013-11-22 | 2018-02-27 | 大族激光科技产业集团股份有限公司 | Radial polarisation thin-sheet laser |
| CN104075703B (en) * | 2014-07-23 | 2017-01-11 | 中北大学 | Resonant optical gyroscope based on high-K fluoride resonant cavity |
| CN113025306B (en) * | 2019-12-09 | 2023-07-21 | 上海航空电器有限公司 | Phosphor with composite parabolic light collecting capability and preparation method thereof |
| CN114336241B (en) * | 2021-12-30 | 2024-01-05 | 云南大学 | Tunable hollow laser based on electro-optic crystal axicon |
| CN117239532B (en) * | 2023-11-16 | 2024-01-30 | 长春理工大学 | Fundamental mode light beam control device based on hexagonal prism cavity and output method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2713745B2 (en) * | 1988-11-16 | 1998-02-16 | 浜松ホトニクス株式会社 | Optically pumped solid-state laser |
| GB9417964D0 (en) * | 1994-09-07 | 1994-10-26 | Avimo Ltd | Laser generator |
| CN2310404Y (en) * | 1998-01-06 | 1999-03-10 | 程勇 | Regulating free solid laser |
-
1999
- 1999-08-02 AU AU51466/99A patent/AU5146699A/en not_active Abandoned
- 1999-08-02 WO PCT/CN1999/000105 patent/WO2001009993A1/en active Application Filing
- 1999-08-02 CN CNB998168483A patent/CN1161865C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| WO2001009993A1 (en) | 2001-02-08 |
| CN1379924A (en) | 2002-11-13 |
| AU5146699A (en) | 2001-02-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1161865C (en) | Laser with resonance cavity including circular cone prism being top in shape | |
| US4873692A (en) | Pulsed tunable solid state laser | |
| JP2003035822A (en) | Polariscope and microlithography projection system provided with the same | |
| US5170409A (en) | Laser resonator assembly | |
| KR980006669A (en) | Laser light generator | |
| KR20050012249A (en) | Short Pulse Laser Device with A Preferably Passive Mode Coupling and A Multiple Reflection Telescope Therefor | |
| CN111106519A (en) | Laser tunable device | |
| CN211238805U (en) | Laser tunable device | |
| CN211698586U (en) | Four-beam laser interference micro-nano machining device | |
| EP0623979A4 (en) | Laser oscillator. | |
| CN87216562U (en) | Stably aligned linear polarization output laser | |
| CN212676597U (en) | Laser device | |
| JP2002287193A (en) | Wavelength conversion element, wavelength conversion device and laser device | |
| JPH04121718A (en) | Optical harmonic generator | |
| CN221057832U (en) | Three-path same-polarization passive phase-locked output solid laser | |
| CN1268044C (en) | Laser resonator with corner mirror | |
| JPS62228185A (en) | Measuring device | |
| JPH0795614B2 (en) | Double frequency laser | |
| JPS60227211A (en) | Adjusting device for optical axis of laser resonator | |
| JP2823870B2 (en) | Apparatus for narrowing spectral line width of semiconductor laser | |
| JPS5775486A (en) | Laser device | |
| JPH06104508A (en) | Solid state laser oscillator | |
| JPH033377A (en) | Semiconductor laser pumping solid-state laser device | |
| JPH02122586A (en) | Solid state laser oscillator | |
| CN2658980Y (en) | Laser resonance cavity having corner reflection mirror |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |