CN1471206A - Layer cmobined laser crystal - Google Patents
Layer cmobined laser crystal Download PDFInfo
- Publication number
- CN1471206A CN1471206A CNA021255547A CN02125554A CN1471206A CN 1471206 A CN1471206 A CN 1471206A CN A021255547 A CNA021255547 A CN A021255547A CN 02125554 A CN02125554 A CN 02125554A CN 1471206 A CN1471206 A CN 1471206A
- Authority
- CN
- China
- Prior art keywords
- laser crystal
- heat radiation
- cmobined
- laser
- layer
- 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
Links
Images
Landscapes
- Lasers (AREA)
Abstract
The laser crystal is a thin slice with thickness as 1mm or lower. N pieces of laser crystal and M or M+1 pieces of heat dispersion material are interleaving arranged and felted as a integrated piece. Spatial type multi-layer heat dispersion overcomes the shortcoming of difficulty for heat dispersion in prior art. The invented laser with simple structure provides lager output power reaching to several watts to several tens watts. The invention is suitable to continuous wave and quasicontinuous wave, and applicable to area such as military affairs, scientific research, entertainment and medical treatment.
Description
Technical field
The present invention relates to a kind of laser crystal, particularly relate to a kind of layer cmobined laser crystal that is used for the laser aid of high-power output.
Background technology
Usually the laser crystal heat radiation all is with external refrigerations such as water-cooled, air-cooled or semiconductor refrigeratings, in the quasi-three-level system, because crystal temperature effect directly has influence on down energy level population, the thickness of the laser crystal that uses in therefore traditional quasi-three-level system is all very thin, generally about 2mm, well below the crystal (about 10mm) of other level system, thereby the power output of traditional quasi-three-level system is not high, has only a watt level.Heat dissipating method has certain improvement in recent years, produced the laser crystal of sandwich structure, for example people such as P.Zeller has delivered " Eficient, multiwatt, continuous-wave laser operation on the in January, 2000 on Optics Letters
4F
3/2-
4F
9/2Transitions ofNd:YVO
4And Nd:YAG " the middle laser crystal that adopts sandwich structure, its center is a Nd:YAG, and both sides all are white YAG, and three blocks of crystal optical cements are together to strengthen heat radiation function, and whole crystal is placed in the refrigerator and freezes.This structure is owing to have only three layers altogether, thereby the thickness of Nd:YAG is only slightly thick than traditional laser crystal, has reached 3mm, and exportable blue light (473nm) be 1.5W, can not realize that far away high power laser exports.
Summary of the invention
The objective of the invention is to overcome in existing quasi-three-level system, laser lower level exists the Boltzmann population to distribute, the laser lower level population raises with temperature and sharply increases, make and realize population upset difficulty, and in traditional experiment in order to freeze, laser crystal can only be cut very thin, so just limit the shortcoming of the laser power of output again; Two of purpose of the present invention can also be combined into one by using different laser crystals, and exports multi-wavelength's laser simultaneously; Be staggered thereby the invention provides a kind of employing multilayer heat radiation material and laser crystal, increased heat radiation function greatly, increased the layer cmobined laser crystal of the laser aid that is used for high-power output of laser crystal length again.
The object of the present invention is achieved like this:
A kind of layer cmobined laser crystal provided by the invention comprises: heat radiation material, laser crystal; It is characterized in that: laser crystal is the thin slice below a millimeter or a millimeter, and N piece laser crystal thin slice and M sheet or M+1 sheet heat radiation material are staggered to multilayer and strike up partnership with the light gluing.
In described N piece laser crystal thin slice and M sheet or the M+1 sheet heat radiation material, N and equal M are the positive integer more than 2.When described heat radiation material and laser crystal thin slice are staggered to piece layer shape combination laser crystal, can adopt identical heat radiation material or laser crystal thin slice; Also can be staggered with different heat radiation materials or laser crystal thin slice.
Described heat radiation material is to the non-absorbent crystal of pump light, as: plain YAG, promptly white YAG; Or other good material of thermal conductivity, as: fused quartz.
Described laser crystal comprises: neodymium-doped yttrium-aluminum garnet (Nd:YAG), mix yttrium yttrium-aluminium-garnet (Yb:YAG), Nd-doped yttrium vanadate (Nd:YVO
4), neodymium-doped yttrium-fluoride lithium (Nd:YLF) or other laser crystal.
Because laser crystal is a thickness less than one millimeter thin slice, therefore the heat that produces seldom; And the heat that produces is easy to by the heat radiation material absorbing before and after it, and the monoblock laser crystal just can remain lower temperature and make the easy realization of population upset like this.
A kind of layer cmobined laser crystal provided by the invention is used for powerful laser, overcome the shortcoming that laser crystal is difficult to dispel the heat in original quasi-three-level technology, and it is simple in structure, its power can reach several watts to tens watts, realized efficient, powerful laser output, be widely used in continuous wave, quasi c. w., opened up wide prospect, can be widely used in fields such as military affairs, scientific research, amusement, medical treatment for the practicability of superpower laser.
Superiority of the present invention: layer cmobined laser crystal of the present invention is made up of heat radiation material and laser crystal, and wherein laser crystal is staggered with the heat radiation material and becomes a crystal with the light glue glued adhesion.When this layer cmobined laser crystal during by pumping, population upset in the laser crystal, produce a large amount of heat simultaneously, because heat-dissipating thing confrontation pump light does not absorb, therefore do not produce heat, again because the contact-making surface of heat radiation material and laser crystal is bigger, thereby the heat in the laser crystal can pass to rapidly in the heat radiation material, so just guaranteed that laser crystal remains lower temperature, made the population upset to carry out.The present invention can also select two kinds of different laser crystals (Fig. 3) arbitrarily, thereby has realized producing simultaneously in a laser two kinds of quasi-three-level fundamental frequency light outputs.The present invention adopts multilayer heat radiation material and laser crystal to be staggered, strengthened heat radiation function greatly, and can increase the thickness of laser crystal to a great extent, its radiating efficiency improves more than 10 times than Traditional bulk crystal, and the high-power output of the three level system that is as the criterion provides a kind of wide prospect.
Description of drawings
Fig. 1 is a layer cmobined laser crystal composition diagram of the present invention
Fig. 2 is a kind of example structure figure of layer cmobined laser crystal of the present invention
Fig. 3 is the another kind of example structure figure of layer cmobined laser crystal of the present invention
Fig. 4 is another example structure figure of layer cmobined laser crystal of the present invention
The drawing explanation:
1, the 3-material that dispels the heat; 2, the 4-laser crystal;
Embodiment
Make one by 5 heat radiation materials and 4 layer cmobined laser crystals of the present invention that laser crystal is formed according to Fig. 2.Heat radiation material 1 is selected white YAG for use, and it is of a size of the thin slice of φ 5mm * thick 2mm; Heat radiation material 3 is selected white YAG for use, and it is of a size of the thin slice of φ 5mm * thick 1mm; It is 1.1% Nd:YAG that laser crystal 2 is selected Nd ion doping concentration for use, is of a size of the thin slice of φ 5mm * thick 1.5mm; The material 1 that will dispel the heat stacks optical cement with laser crystal 2 by the diagram intersection and is in the same place, two anti-reflection films of both ends of the surface plating 808nm and 946nm about its layer cmobined laser crystal.
This layer cmobined laser crystal is used in the resonant cavity of output 946nm, when this novel lamellar combination laser crystal of pump light the past face pumping, can exports the laser of high-power 946nm.
Embodiment 2:
Make piece layer shape combination laser crystal by Fig. 3, comprise 5 the heat radiation materials 1 select white YAG for use, it is of a size of φ 5mm * thick 1mm; It is 1.0% Nd:YAG that 2 blocks of laser crystals 2 are selected Nd ion doping concentration for use, and it is of a size of φ 5mm * thick 1mm; It is 0.5% Nd:YVO that 2 blocks of laser crystals 4 are selected Nd ion doping concentration for use
4, be of a size of φ 5mm * thick 1mm laser crystal thin slice; The material 1 that will dispel the heat is in the same place by the diagram optical cement with 4 with laser crystal 2, both ends of the surface plating 808nm, the 914nm of this layer cmobined laser crystal and the anti-reflection film of 946nm.
This layer cmobined laser crystal is used in the resonant cavity of output 914nm and 946nm, when this novel lamellar combination laser crystal of pump light the past face pumping, can exports the laser of 914nm and 946nm simultaneously.
Embodiment 3:
Make piece layer shape combination laser crystal by Fig. 4, heat radiation material 1 is selected fused quartz for use, and it is of a size of φ 5mm * thick 1mm; It is 13% Yb:YAG that laser crystal 2 is selected Yb ion doping concentration for use, and it is of a size of φ 5mm * thick 1mm; The material 1 that will dispel the heat is in the same place by the diagram optical cement with laser crystal 2, the both ends of the surface plating 940nm of this layer cmobined laser crystal and two anti-reflection films of 1030nm.
This layer cmobined laser crystal is used in the resonant cavity of output 1030nm, when this novel lamellar combination laser crystal of pump light the past face pumping, can exports the laser of high-power 1030nm.
Embodiment 4:
Make piece layer shape combination laser crystal by Fig. 3, the material 1 that just dispels the heat is selected for use and is melted quartz, and all the other are with embodiment 2.This layer cmobined laser crystal comprises that 5 heat radiation materials 1 select for use and melt quartz, is of a size of φ 5mm * thick 1mm; It is 1.0% Nd:YAG that 2 blocks of laser crystals 2 are selected Nd ion doping concentration for use, is of a size of φ 5mm * thick 1mm; It is 0.5% Nd:YVO that 2 blocks of laser crystals 4 are selected Nd ion doping concentration for use
4, be of a size of φ 5mm * thick 1mm laser crystal thin slice; The material that will dispel the heat is in the same place by the diagram optical cement with laser crystal, both ends of the surface plating 808nm, the 914nm of this layer cmobined laser crystal and the anti-reflection film of 946nm.
Claims (6)
1. a layer cmobined laser crystal comprises: heat radiation material, laser crystal; It is characterized in that: laser crystal is the thin slice below a millimeter or a millimeter, and N piece laser crystal thin slice and M sheet or M+1 sheet heat radiation material are staggered to multilayer and strike up partnership with the light gluing.
2. by the described layer cmobined laser crystal of claim 1, it is characterized in that: the N of described N piece laser crystal thin slice and M sheet or M+1 sheet heat radiation material and M are the positive integer more than 2.
3. by the described layer cmobined laser crystal of claim 1, it is characterized in that:, comprise heat radiation material or laser crystal thin slice that employing is identical when described M sheet or M+1 sheet heat radiation material are staggered to piece layer shape combination laser crystal with N piece laser crystal thin slice; Also comprise with different heat radiation materials or laser crystal thin slice and being staggered.
4. by the described layer cmobined laser crystal of claim 1, it is characterized in that: described heat radiation material is to the non-absorbent crystal of pump light, comprising: white YAG; Or other good material of thermal conductivity.
5. by the described layer cmobined laser crystal of claim 4, it is characterized in that: the heat radiation material that described thermal conductivity is good is a fused quartz.
6. by the described layer cmobined laser crystal of claim 1, it is characterized in that: described laser crystal comprises: neodymium-doped yttrium-aluminum garnet, mix yttrium yttrium-aluminium-garnet, Nd-doped yttrium vanadate, neodymium-doped yttrium-fluoride lithium or other laser crystal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02125554 CN1200490C (en) | 2002-07-22 | 2002-07-22 | Layer cmobined laser crystal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02125554 CN1200490C (en) | 2002-07-22 | 2002-07-22 | Layer cmobined laser crystal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1471206A true CN1471206A (en) | 2004-01-28 |
| CN1200490C CN1200490C (en) | 2005-05-04 |
Family
ID=34142941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02125554 Expired - Fee Related CN1200490C (en) | 2002-07-22 | 2002-07-22 | Layer cmobined laser crystal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1200490C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109280972A (en) * | 2018-10-08 | 2019-01-29 | 安徽环巢光电科技有限公司 | The preparation method of the disc waveguide laser crystal of three-decker |
-
2002
- 2002-07-22 CN CN 02125554 patent/CN1200490C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109280972A (en) * | 2018-10-08 | 2019-01-29 | 安徽环巢光电科技有限公司 | The preparation method of the disc waveguide laser crystal of three-decker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1200490C (en) | 2005-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202695968U (en) | Passive Q-switched laser based on bonded crystal | |
| Yagi et al. | Highly efficient flashlamp-pumped Cr3+ and Nd3+ codoped Y3Al5O12 ceramic laser | |
| US11509111B2 (en) | All-solid-state high-power slab laser based on phonon band edge emission | |
| Chen et al. | Research on diffusion-bonding composite YVO4/Nd: GdVO4 crystal | |
| CN105655864A (en) | Rare earth ion doped yttrium aluminum garnet laser material with sandwich ceramic and single-crystal composite structure and preparation method thereof | |
| CN113078534B (en) | Intracavity cascade pump laser based on composite structure gain medium | |
| JP2002057388A (en) | Solid-state laser oscillator | |
| Liu et al. | Edge-pumped asymmetric Yb: YAG/YAG thin disk laser | |
| CN1200490C (en) | Layer cmobined laser crystal | |
| CN2559135Y (en) | Laminal laser crystal used in laser with high power output | |
| WO2005046010A2 (en) | Gain boost with synchronized multiple wavelength pumping in a solid-state laser | |
| CN210137088U (en) | Heat dissipation substrate and solid laser | |
| Beil et al. | New thin disk laser materials: Yb: ScYLO and Yb: YLF | |
| CN1278655C (en) | Nd-doped yttrium vanadate laser therapeutical machine | |
| CN1059292C (en) | High-power intracavity acousto-optic modulation laser | |
| CN1756007A (en) | High-power side-pump laser apparatus | |
| CN107591670B (en) | Double-doped crystal laser generation method and device | |
| CN109217091A (en) | A kind of single-chip integration green light pulse laser and preparation based on neodymium doped yttrium vanadate and potassium titanium oxide phosphate gluing crystal | |
| CN2569374Y (en) | Large power output blue light laser with heat radiating part | |
| CN112421370A (en) | Self-frequency-doubling full-solid-state laser based on quasi-two-level laser radiation | |
| CN202159886U (en) | Laser crystal structure of intracavity frequency doubling laser | |
| CN205212169U (en) | Accurate continuous double stick of three hectowatt levels concatenates all solid state laser | |
| CN213636602U (en) | Side-pumped high-power all-solid-state picosecond ultraviolet laser | |
| CN102299467A (en) | Laser crystal structure of intracavitary frequency multiplication laser | |
| Qi et al. | Experimental study of Ti: sapphire laser end-pumped Nd: YAG ceramic laser Q-switched by Cr4+: YAG saturable absorber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050504 Termination date: 20140722 |
|
| EXPY | Termination of patent right or utility model |