CN102545023B - Device for restraining self-excitation in image-relaying laser amplifier and manufacture method thereof - Google Patents
Device for restraining self-excitation in image-relaying laser amplifier and manufacture method thereof Download PDFInfo
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- CN102545023B CN102545023B CN 201110138086 CN201110138086A CN102545023B CN 102545023 B CN102545023 B CN 102545023B CN 201110138086 CN201110138086 CN 201110138086 CN 201110138086 A CN201110138086 A CN 201110138086A CN 102545023 B CN102545023 B CN 102545023B
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 230000000452 restraining effect Effects 0.000 title abstract 3
- 230000005764 inhibitory process Effects 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical group [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 238000003754 machining Methods 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 230000003321 amplification Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
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- 230000031700 light absorption Effects 0.000 description 1
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Abstract
The invention discloses a device for restraining self-excitation in an image-relaying laser amplifier, which can restrain self-excitation generation in an amplification cavity and comprises a hollow cavity, a first window sheet and a second window sheet respectively installed at two ends of the cavity and a light beam collector arranged in the cavity between the first window sheet and the second window sheet and dividing the cavity into a first cavity and a second cavity. The light beam collector is conical, a small hole is arranged at the top end of the conical light beam collector, and the second cavity is a vacuum cavity. A manufacture method of the device for restraining self-excitation in the image-relaying laser amplifier is further disclosed. The device has the advantages of improving output power of the laser amplifier and ensuring facula model quality.
Description
Technical field
The present invention relates to laser technology field, particularly relate to a kind of macro-energy picture that suppresses and transmit device and the manufacture method thereof that produces self-excitation in the laser amplifier system.
Background technology
At present, in macro-energy row ripple amplifying laser device, when guaranteeing that the macro-energy seed light source amplifies, the laser output of going to guarantee high light beam quality also is very important, but, because the output energy of this row ripple amplifying laser device is big, therefore, in order to guarantee the stable output of system, usually can adopt in the laser enlarged cavity of laser, to use under the state and as the transmission technology laser facula on the optical element be expanded, and then the components and parts at different levels of the system of assurance all are operated in the stable threshold range the stable output of final acquisition.
But, though aforesaid way can obtain stable output, but still there is defective in it, in this mode, when light beam was full of the diameter of whole gain media, it was easy to form the light path vibration with the residual reflection light of front and back, thereby produce " self-excitation ", the generation of this " self-excitation " not only can destroy each optical component in the amplifying element, but also understands because interfere with original light, and the beam quality of output is had very large influence.
By as seen above-mentioned, and analyze by the reason that " self-excitation " produced, the major influence factors of being somebody's turn to do " self-excitation " generation has two aspects, is the laser intensity of residue radiation on the one hand, some minute surfaces in this residual reflection and the laser enlarged cavity produce resonance, and output laser; On the other hand, then be that it can form self-excitation in the laser enlarged cavity because residual reflection hot spot degree of overlapping is too high.
At above-mentioned, present industry practitioner avoiding for " self-excitation ", normally require the anti-reflection requirement of the anti-reflection film of each components and parts to reach more than 99.99%, if the output higher part of energy then can propose requirements at the higher level in the practical application, and the requirement that needs to improve plated film; Perhaps adopt mechanical system, gain substance is carried out the angle cutting; Perhaps in debug process, will play the link of resonance easily and carry out the oblique angle placement; And then go to alleviate the generation of " self-excitation ".
In sum, though industry has adopted variety of way for fear of the generation of " self-excitation " at present, and the link effect has been played in the generation of " self-excitation ", but those modes can cause light path to tilt, in the mass production process, can't guarantee consistency, so be not to avoid the ideal of " self-excitation " to select.
Summary of the invention
Based on the problem that prior art exists, main purpose of the present invention is to provide a kind of macro-energy picture that suppresses to transmit device and the manufacture method thereof that produces self-excitation in the laser amplifier system, has simple in structure and practical advantage.
To achieve these goals, the invention provides a kind of macro-energy picture that suppresses and transmit the device that produces self-excitation in the laser amplifier system, comprising: cavity, first and second diaphragm and light beam manifold.Described cavity is hollow form; Described first, second diaphragm is installed in described cavity two ends respectively; It is conical that described light beam manifold is, be arranged in the cavity and between described first diaphragm and described second diaphragm, wherein, the conical base of described light beam manifold is divided into first cavity and second cavity with cavity, and the cone tip of described light beam manifold arranges aperture.
Further, first diaphragm and second diaphragm are collector lens.
Further, described second cavity is a vacuum chamber.
Further, the vacuum pressure of described second cavity is 10
-4-10
-5Pa.
Further, described conical cone angle is more than or equal to 30 °.
Further, the size of described aperture satisfies Φ=20 * 2.44 λ f/D, in the formula, Φ represents the diameter of aperture, λ represents the wavelength of light wave, and f represents the focal length of first diaphragm or second diaphragm, and D represents the spot diameter on first diaphragm or second diaphragm.
Further, on the described light beam manifold and the limit relative with aperture is glass mirror or instrument bezel.
Further, the material of described aperture is molybdenum.
In addition, the present invention also provides a kind of macro-energy picture that suppresses to transmit the manufacture method that produces the device of self-excitation in the laser amplifier system, comprises following operation:
Form the cavity of hollow form;
Make the light beam manifold, be conical, be positioned in the described cavity, wherein said conical bottom vertical is divided into first cavity and second cavity in described cavity with described cavity, and described conical top arranges aperture; And
Install first diaphragm and second diaphragm respectively at the two ends of described cavity.
Further, the operation of described making light beam manifold also comprises: with aperture towards second cavity, and with the described second cavity vacuum pumping chamber.
Further, the pressure in described second cavity is remained on 10
-4-10
-5Between the Pa.
Further, the material of described aperture is molybdenum sheet.
Further, the material of described aperture is the ball blast processing of adopting 30 μ m, boils the black-labour skill after machining again and handles.
Further, described conical cone angle is more than or equal to 30 °.
Further, the size of described aperture satisfies Φ=20 * 2.44 λ f/D, in the formula, Φ represents the diameter of aperture, λ represents the wavelength of light wave, and f represents the focal length of first diaphragm or second diaphragm, and D represents the spot diameter on first diaphragm or second diaphragm.
Further, the conical base of described light beam manifold is glass mirror or instrument bezel.
Further, described first diaphragm and described second diaphragm are collector lens.
Inhibition macro-energy picture of the present invention transmits the device and the manufacture method thereof that produce self-excitation in the laser amplifier system and has the following advantages:
1) power output and the facular model quality of laser amplifier have been improved;
2) can not cause light path to tilt, and be applicable to the laser of solution macro-energy picture or the self-excitation problem in the laser amplifier.
Description of drawings
Fig. 1 suppresses the macro-energy picture to transmit the structural representation that produces the device of self-excitation in the laser amplifier system in the embodiment of the present invention.
Fig. 2 suppresses the macro-energy picture to transmit the device producing method flow chart that produces self-excitation in the laser amplifier system in the embodiment of the present invention.
Fig. 3 suppresses the macro-energy picture to transmit the index path that produces the device of self-excitation in the laser amplifier system in the embodiment of the present invention.
Embodiment
Come the device and the manufacture method thereof that produce self-excitation in the inhibition macro-energy picture transmission laser amplifier system of the present invention are described in further detail below in conjunction with accompanying drawing and concrete enforcement.
A kind of laser amplifier of the present invention falls by the light absorption that will be reflected on a small quantity, eliminates reverberation and returns, and then solve the self-excitation problem.
Shown in Fig. 1, this described inhibition macro-energy picture transmits the device that produces self-excitation in the laser amplifier system and comprises cavity 10, first diaphragm 11, second diaphragm 12 and light beam manifold 13.Wherein, described cavity 10 is hollow form, and is divided into first cavity 101 and second cavity 102 by light beam manifold 13.Described first diaphragm 11 and described second diaphragm 12 are installed in the two ends of cavity 10 respectively.Described light beam manifold 13 is for being arranged in the cavity 10, and between first diaphragm 11 and second diaphragm 12.
In actual applications, first diaphragm 11 and second diaphragm 12 are in order to converge the collector lens of light.It is conical that described light beam manifold 13 is, and offers aperture 131 on the top of this conical shaped beam manifold 13, and between these aperture 131 holes direction towards the gain media part of laser.
In addition, again referring to shown in Fig. 2, it transmits the method flow diagram that produces the device of self-excitation in the laser amplifier system for making inhibition macro-energy picture of the present invention, and this method comprises:
In step S201, form the cavity 10 of hollow form.
In step S202, make conical light beam manifold 13, and at described conical top aperture 131 is set.
In step S203, light beam manifold 13 is positioned in the described cavity 10, wherein said conical bottom vertical is divided into first cavity 101 and second cavity 102 in described cavity 10 with described cavity 10, and with this aperture 131 towards second cavity 102.
In step S204, install first diaphragm 11 and second diaphragm 12 respectively at the two ends of described cavity 10.
At step S205, with second cavity 102 chamber that is evacuated.
Further, in the present invention, the pressure in described second cavity 102 remains between the 10-4-10-5Pa.
During practical application, the material that described aperture 131 adopts is molybdenum sheet, and this molybdenum sheet is the hard ball processing of adopting 30 μ m, and boils the black-labour skill again and handle and form after machining.
In addition, during practical application, the size of described aperture 131 and the wavelength of light wave have relation, are generally 20 times diffracted ray length, and shown in Fig. 3, during design, the size of described aperture 131 satisfies Φ=20 * 2.44 λ f/D, in the formula, Φ represents the diameter of aperture, λ represents the wavelength of light wave, and f represents the focal length of collector lens, and D represents the diameter of hot spot.
Wherein, described f and D correspondence, if adopt the focal distance f of first diaphragm 11, then D is the spot diameter on first diaphragm 11, in addition, for the light of same wavelength, the f/D of first diaphragm 11 and second diaphragm 12 generally is the same.
In addition, on the described light beam the manifold 13 and limit 132 relative with aperture 131 is glass mirror or instrument bezel, described cavity 10 is for being divided into first cavity 101 and second cavity 102 by above-mentioned glass mirror or instrument bezel, and when specifically using, described second cavity 102 is for being evacuated, and its pressure is 10-4-10-5Pa, thereby can be when beam energy is very big, go to make that air is ionized, produce radiation by ionization subsequently and remove to influence conversely beam quality again.
Further, during practical application, the cone angle of described conical shaped beam manifold 13 is at least 30 degree, and be the best when spending with 30 especially, when laser converges by second diaphragm 12 in second cavity 102 of taking in cavity 10, can guarantee that the light of residual reflection is by the enough damping capacities of the reflection of aperture 131 on the inner chamber of light beam manifold 13.
The above only is the preferred embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (13)
1. one kind is suppressed the device that picture transmits self-excitation in the laser amplifier, it is characterized in that, comprising:
Cavity is hollow form;
First, second diaphragm is installed in described cavity two ends respectively; And
The light beam manifold, be conical, be arranged in the described cavity and between described first diaphragm and described second diaphragm, wherein, the conical base of described light beam manifold is divided into first cavity and second cavity with described cavity, and the cone tip of described light beam manifold arranges aperture;
Described conical cone angle is more than or equal to 30 °;
The size of described aperture satisfies Φ=20 * 2.44 λ f/D, in the formula, Φ represents the diameter of described aperture, and λ represents the wavelength of light wave, f represents the focal length of described first diaphragm or described second diaphragm, and D represents the spot diameter on described first diaphragm or described second diaphragm.
2. inhibition picture as claimed in claim 1 transmits the device of self-excitation in the laser amplifier, it is characterized in that described first diaphragm and described second diaphragm are collector lens.
3. inhibition picture as claimed in claim 1 transmits the device of self-excitation in the laser amplifier, it is characterized in that described aperture is towards second cavity, and described second cavity is vacuum chamber.
4. inhibition picture as claimed in claim 3 transmits the device of self-excitation in the laser amplifier, it is characterized in that, the pressure in described second cavity is 10
-4-10
-5Pa.
5. inhibition picture as claimed in claim 4 transmits the device of self-excitation in the laser amplifier, it is characterized in that the conical base of described light beam manifold is glass mirror or instrument bezel.
6. inhibition picture as claimed in claim 1 transmits the device of self-excitation in the laser amplifier, it is characterized in that the material of described aperture is molybdenum.
7. one kind is suppressed the manufacture method that picture transmits the device of self-excitation in the laser amplifier, it is characterized in that, comprises following operation:
Form the cavity of hollow form;
Make conical light beam manifold, be positioned in the described cavity, wherein said conical bottom vertical is divided into first cavity and second cavity in described cavity with described cavity, and described conical top arranges aperture; And
Install first diaphragm and second diaphragm respectively at the two ends of described cavity;
Described conical cone angle is more than or equal to 30 °;
The size of described aperture satisfies Φ=20 * 2.44 λ f/D, and in the formula, Φ represents the diameter of aperture, and λ represents the wavelength of light wave, and f represents the focal length of first diaphragm or second diaphragm, and D represents the spot diameter on first diaphragm or second diaphragm.
8. inhibition picture as claimed in claim 7 transmits the manufacture method of the device of self-excitation in the laser amplifier, it is characterized in that the operation of described making light beam manifold also comprises: with aperture towards second cavity, and with the described second cavity vacuum pumping chamber.
9. inhibition picture as claimed in claim 8 transmits the manufacture method of the device of self-excitation in the laser amplifier, it is characterized in that, the pressure in described second cavity is remained on 10
-4-10
-5Between the Pa.
10. inhibition picture as claimed in claim 9 transmits the manufacture method of the device of self-excitation in the laser amplifier, it is characterized in that the material of described aperture is molybdenum sheet.
11. inhibition picture as claimed in claim 10 transmits the manufacture method of the device of self-excitation in the laser amplifier, it is characterized in that, the material of described aperture is the ball blast processing of adopting 30 μ m, boils the black-labour skill after machining again and handles.
12. inhibition picture as claimed in claim 7 transmits the manufacture method of the device of self-excitation in the laser amplifier, it is characterized in that the conical base of described light beam manifold is glass mirror or instrument bezel.
13. inhibition picture as claimed in claim 7 transmits the manufacture method of the device of self-excitation in the laser amplifier, it is characterized in that described first diaphragm and described second diaphragm are collector lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110138086 CN102545023B (en) | 2011-05-26 | 2011-05-26 | Device for restraining self-excitation in image-relaying laser amplifier and manufacture method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110138086 CN102545023B (en) | 2011-05-26 | 2011-05-26 | Device for restraining self-excitation in image-relaying laser amplifier and manufacture method thereof |
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| CN102545023B true CN102545023B (en) | 2013-07-17 |
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| US9899798B2 (en) | 2015-08-03 | 2018-02-20 | University Of Central Florida Research Foundation, Inc. | Apparatus and method for suppressing parasitic lasing and applications thereof |
| CN108614385B (en) * | 2018-06-19 | 2020-06-23 | 青岛海信激光显示股份有限公司 | Light source module of laser television and laser projection television |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5436759A (en) * | 1994-06-14 | 1995-07-25 | The Regents Of The University Of California | Cross-talk free, low-noise optical amplifier |
| RU2142665C1 (en) * | 1998-08-10 | 1999-12-10 | Швейкин Василий Иванович | Injection laser |
| US6788726B2 (en) * | 2002-02-26 | 2004-09-07 | New Focus, Inc. | External cavity laser with high spectral purity output |
| US7463660B2 (en) * | 2004-05-11 | 2008-12-09 | Lawrence Livermore National Laboratory, Llc | Gain media edge treatment to suppress amplified spontaneous emission in a high power laser |
| CN101714740B (en) * | 2009-12-02 | 2011-06-15 | 天津大学 | Method for improving pumping conversion efficiency of high-power pumped erbium-ytterbium co-doped fiber amplifier |
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Denomination of invention: Device for restraining self-excitation in image-relaying laser amplifier and manufacture method thereof Effective date of registration: 20180119 Granted publication date: 20130717 Pledgee: China Co truction Bank Corp Beijing Zhongguancun branch Pledgor: Beijing GK Laser Technology Co., Ltd. Registration number: 2018990000064 |
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Date of cancellation: 20180130 Granted publication date: 20130717 Pledgee: China Co truction Bank Corp Beijing Zhongguancun branch Pledgor: Beijing GK Laser Technology Co., Ltd. Registration number: 2018990000064 |
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Denomination of invention: Device for restraining self-excitation in image-relaying laser amplifier and manufacture method thereof Effective date of registration: 20180130 Granted publication date: 20130717 Pledgee: China Co truction Bank Corp Beijing Zhongguancun branch Pledgor: Beijing GK Laser Technology Co., Ltd. Registration number: 2018990000091 |
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Granted publication date: 20130717 Termination date: 20200526 |