CN104158081A - Foldable condensation amplifier - Google Patents
Foldable condensation amplifier Download PDFInfo
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- CN104158081A CN104158081A CN201410353400.0A CN201410353400A CN104158081A CN 104158081 A CN104158081 A CN 104158081A CN 201410353400 A CN201410353400 A CN 201410353400A CN 104158081 A CN104158081 A CN 104158081A
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- laser
- amplifier
- yag crystal
- diode array
- total reflection
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Abstract
The invention relates to a foldable condensation amplifier. The foldable condensation amplifier mainly comprises a diode array (1) and a YAG crystal (2) fixed to the upper part of the diode array (1), wherein total reflection membranes are coated on the upper surface of the diode array (1) and the lower surface of the YAG crystal (2). When the foldable condensation amplifier is in use, an incidence angle can be changed to be minimized, so that the optical path of laser in a laser slab of unit length is greatly increased; as the total reflection membranes are used, the reflectivity of the corresponding wavelength is maximized.
Description
Technical field
The present invention relates to a kind of reflective laser amplifier, relate in particular to the collapsible amplifier of a kind of deflation, for sunlight pumping laser field.
Background technology
The laser that sunlight pump-coupling laser produces can be applied to Energy Transfer, space optical communication and electrooptical countermeasures.Aspect Energy Transfer, the mankind can set up solar power station in space in the future, and it can be converted into Laser output by sunlight pump-coupling laser collecting the solar energy coming.The mankind can utilize the laser producing in space to terrestrial transmission energy, thereby greatly alleviate the energy crisis that the mankind face.In addition, can also be with the laser producing to spacecraft makeup energy such as satellite, space station, spaceships.
Aspect space optical communication, because take the advantages such as the system that laser is carrier has good directionality, narrow transmitting beam, information capacity is large, antenna size is little.In addition, laser has also been eliminated atmosphere to interference such as the absorption of laser, scattering and disturbances at spatial, has given full play to distinctive advantage, with respect to microwave transmission and processing, can be described as even better.Aspect electrooptical countermeasures, high power sunlight pump-coupling laser in space can serve as weapon, the laser of its output possesses that energy is large, precision is high, speed is fast and the feature such as strong interference immunity, can be by comprehensive effects such as ionization, impact, Gao Re and radiation, with spacecrafts such as the form killer satellite of directional beam, spaceship, space stations, destroy its photoelectric instrument equipment.
At present, sunlight is converted into Laser output, has two kinds of methods.That another kind is indirectly sunlight to be converted into Laser output by solar cell by a sunlight pump-coupling laser.Because the transformation efficiency of sunlight pump-coupling laser oscillator is not high, so development sunlight pump-coupling laser amplifier has become a new thinking.
Summary of the invention
In order to overcome the deficiencies in the prior art, resolve the problem of prior art, make up the deficiency of existing existing product in the market.
The invention provides the collapsible amplifier of a kind of deflation, amplifier mainly consists of diode array and YAG crystal, and wherein said YAG crystal is fixed on diode array top, and the upper surface of described diode array and YAG crystal lower surface are all coated with total reflection film.
Preferably, above-mentioned YAG crystal is Nd:YAG crystal.
Preferably, above-mentioned laser outgoing after the upper surface of diode array and the lower surface multiple reflections of YAG crystal after YAG crystal.
The collapsible amplifier of deflation provided by the invention is in use by changing incidence angle, incidence angle can be accomplished very little, the light path of laser in the laser slab of unit length improved greatly, and used total reflection film, make the reflectivity of respective wavelength get maximum.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Reference numeral: 1-diode array; 2-YAG crystal.
Embodiment
For the ease of those of ordinary skills, understand and implement the present invention, below in conjunction with the drawings and the specific embodiments, the present invention is described in further detail.
The collapsible amplifier of deflation provided by the invention, its operation principle is: it is that the principle of reflection in lath gain media increases the light path of laser in lath gain media by laser, thereby amplifying laser power (energy).But laser can only carry out back reflective in two planes of lath, so the light path increasing is limited.If want to increase the light path of laser in the lath of limited size, can only make incidence angle or the angle of reflection of laser reflex time in lath reduce, thereby the laser light path in the lath of unit length is increased.
If the total reflection principle with laser in lath reflects, incidence angle or the angle of reflection of laser when lath internal reflection just must be more than or equal to the cirtical angle of total reflection so, so the total reflection principle with laser in laser slab carries out reflex time, the laser light path in unit length lath is also very limited.
If not reflecting by the total reflection of laser in lath, the total reflection film that just can only plate by the reflecting surface at lath respective wavelength reflects.But, even total reflection film also only when corresponding wavelength impinges perpendicularly on total reflection film, just can make the reflectivity of respective wavelength get maximum, and be generally less than often 1.Want to make laser to propagate in lath forward, and from laser slab outgoing, incidence angle must be greater than 0 so, can not impinge perpendicularly on total reflection film.In theory, incidence angle can be accomplished very little, and the light path of laser in the laser slab of unit length improved greatly.But the reflection mode of this plating total reflection film also has very large defect.
First, must make two reflected in parallel planes of laser all plate total reflection film, because the width of two reflected in parallel planes is all smaller, so that the difficulty of coating technique increases, and cost is also more expensive.The second, incidence angle is not equal to 0 after all, shines lath outside, thereby caused the loss of power (energy) so still have part laser in lath.The 3rd, because two reflected in parallel planes have all plated total reflection film, thus can between two plated film planes, form parasitic oscillation, thus make laser power (energy) loss considerable part.
The collapsible amplifier of deflation provided by the invention is in use by changing incidence angle, incidence angle can be accomplished very little, the light path of laser in the laser slab of unit length improved greatly, and used total reflection film, make the reflectivity of respective wavelength get maximum.
The embodiment of the above is better embodiment of the present invention; not with this, limit specific embodiment of the invention scope; scope of the present invention comprises and is not limited to this embodiment, and the equivalence that all shapes according to the present invention, structure are done changes all in protection scope of the present invention.
Claims (3)
1. one kind tightens collapsible amplifier, it is characterized in that: described amplifier mainly consists of diode array (1) and YAG crystal (2), wherein said YAG crystal (2) is fixed on diode array (1) top, and the upper surface of described diode array (1) and YAG crystal (2) lower surface are all coated with total reflection film.
2. the collapsible amplifier of deflation according to claim 1, is characterized in that: described YAG crystal (2) is Nd:YAG crystal.
3. the collapsible amplifier of deflation according to claim 1, is characterized in that: described laser is outgoing after the upper surface of diode array (1) and the lower surface multiple reflections of YAG crystal (2) after YAG crystal (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410353400.0A CN104158081A (en) | 2014-07-18 | 2014-07-18 | Foldable condensation amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410353400.0A CN104158081A (en) | 2014-07-18 | 2014-07-18 | Foldable condensation amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104158081A true CN104158081A (en) | 2014-11-19 |
Family
ID=51883525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410353400.0A Pending CN104158081A (en) | 2014-07-18 | 2014-07-18 | Foldable condensation amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104158081A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6377593B1 (en) * | 1999-06-21 | 2002-04-23 | Northrop Grumman Corporation | Side pumped Q-switched microlaser and associated fabrication method |
| EP1265323A3 (en) * | 2001-06-07 | 2006-06-21 | Cutting Edge Optronics, Inc. | Solid-state laser using ytterbium-yag composite medium |
| US20080080584A1 (en) * | 2006-09-29 | 2008-04-03 | Usa Of America As Represented By The Administrator Of The National Aeronautics & Space Adm. | Solid-state laser gain module |
| WO2012069409A1 (en) * | 2010-11-25 | 2012-05-31 | Selex Galileo Limited | Laser system and method of operation |
| CN204243450U (en) * | 2014-07-18 | 2015-04-01 | 奉化市宇创产品设计有限公司 | Tighten collapsible amplifier |
-
2014
- 2014-07-18 CN CN201410353400.0A patent/CN104158081A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6377593B1 (en) * | 1999-06-21 | 2002-04-23 | Northrop Grumman Corporation | Side pumped Q-switched microlaser and associated fabrication method |
| EP1265323A3 (en) * | 2001-06-07 | 2006-06-21 | Cutting Edge Optronics, Inc. | Solid-state laser using ytterbium-yag composite medium |
| US20080080584A1 (en) * | 2006-09-29 | 2008-04-03 | Usa Of America As Represented By The Administrator Of The National Aeronautics & Space Adm. | Solid-state laser gain module |
| WO2012069409A1 (en) * | 2010-11-25 | 2012-05-31 | Selex Galileo Limited | Laser system and method of operation |
| CN204243450U (en) * | 2014-07-18 | 2015-04-01 | 奉化市宇创产品设计有限公司 | Tighten collapsible amplifier |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141119 |