CN103293820B - Nonlinear optical effect device - Google Patents
Nonlinear optical effect device Download PDFInfo
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- CN103293820B CN103293820B CN201310188307.4A CN201310188307A CN103293820B CN 103293820 B CN103293820 B CN 103293820B CN 201310188307 A CN201310188307 A CN 201310188307A CN 103293820 B CN103293820 B CN 103293820B
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- stacking
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- nonlinear optical
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- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
A kind of nonlinear optical effect device, comprise laser instrument stacking, total reflection prism, completely reflecting mirror, semi-transparent semi-reflecting lens, nonlinear optical effect medium, the stacking multiple laser instruments comprising stacked in parallel and arrange of described laser instrument, the stacking middle the top of described laser instrument and laser instrument rear are bottom provided with corresponding completely reflecting mirror, during described laser instrument is stacking, remaining laser instrument rear is provided with a semi-transparent semi-reflecting lens all separately, described two completely reflecting mirrors and the angle between described semi-transparent semi-reflecting lens and the optical axis of laser instrument corresponding are separately 45 degree, these completely reflecting mirrors and semi-transparent semi-reflecting lens for realize each laser instrument laser beam between coherence.
Description
Technical field
The present invention relates to a kind of optical devices, particularly relate to a kind of optical devices carrying out various nonlinear effect, be mainly used in the experimental provision in scientific research and teaching, belong to photoelectron technical field.
Background technology
Carry out the nonlinear effect of twin-beam in prior art, such as Raman scattering, Brillouin scattering, the Experiments of Optics such as four-wave mixing, substantially adopt the mode shown in Fig. 4.In medium pool or dielectric rod, two interactional laser beam of participation intersect with certain angle thus interact, the shortcoming of this mode is that the crossing length (or volume) of two bundle laser beam is very little, little reason is apparent, because the diameter of laser beam itself is less, the angle of two bundle laser beam is larger, so intersect area less, area is then intersected minimum when two bundle laser beam intersect vertically, another mode is also had to be exactly the light path of two bundle laser beam overlapped completely, but the mode overlapped completely, in order to two bundle laser beam are synthesized a branch of, light path arranges relative trouble, and inevitably need the part energy of losing wherein beam of laser bundle, this part energy many times often needs loss 50%, because light combination mirror is generally selected semi-transparent semi-reflecting.The present invention puts forward for the problems referred to above just
Summary of the invention
The present invention puts forward for above-mentioned defect, propose a kind of nonlinear optical effect device, use this device, at least can one of solve the problem, it significantly can improve the laser beam energy participating in nonlinear optical effect, makes two of participation role bundle laser beam have relatively large crossing area or volume simultaneously.
According to embodiments of the invention, provide a kind of nonlinear optical effect device, comprise the medium carrying out nonlinear optical effect, interactional two bundle laser beam interact in the medium.
According to another embodiment, provide a kind of nonlinear optical effect device, comprise laser instrument stacking, total reflection prism, completely reflecting mirror, semi-transparent semi-reflecting lens, nonlinear optical effect medium, the stacking multiple laser instruments comprising stacked in parallel and arrange of described laser instrument, the stacking middle the top of described laser instrument and laser instrument rear are bottom provided with corresponding completely reflecting mirror, during described laser instrument is stacking, remaining laser instrument rear is provided with a semi-transparent semi-reflecting lens all separately, described two completely reflecting mirrors and the angle between described semi-transparent semi-reflecting lens and the optical axis of laser instrument corresponding are separately 45 degree, these completely reflecting mirrors and semi-transparent semi-reflecting lens for realize each laser instrument laser beam between coherence, the laser beam of each laser instrument during described laser instrument is stacking penetrates by the front end of laser instrument, the front stacking at described laser instrument is provided with total reflection prism, described total reflection prism is used for all laser beam by the stacking injection of laser instrument being reflected with the angle of 90 degree and impinging perpendicularly in nonlinear optical effect medium, the other beam of laser Shu Ze participating in nonlinear optical effect incides in nonlinear optical effect medium in a parallel manner, during described laser instrument is stacking, the rear end of each laser instrument all has certain transmissivity, this transmissivity is less than the transmissivity of laser instrument front end, the cross section of the laser beam emitted by each laser instrument is rectangle or approximate rectangular, this rectangle is greater than the length perpendicular to stacking direction in the length of laser instrument stacking direction, and length in the stacking direction allow condition under as far as possible close to the cross section length in the stacking direction of laser emitting end.
According to another embodiment, described laser instrument stacking in the transmissivity of each laser instrument rear end be greater than 0 and be less than 5%.
According to another embodiment, described completely reflecting mirror and semi-transparent semi-reflecting lens are micro-reflectors.
Accompanying drawing explanation
Accompanying drawing 1 is the schematic diagram of nonlinear optical effect device of the present invention;
Accompanying drawing 2 is the outgoing end face of single semiconductor laser in this device and the schematic diagram of this end face glazing exit window;
Accompanying drawing 3 is the light distribution schematic diagram carried out in the case of nonlinear optical effect;
Accompanying drawing 4 is crossing situation schematic diagram of two bundle laser beam of participation nonlinear optical effect of the prior art.
Embodiment
Container of the present invention is described in detail below by basis by reference to the accompanying drawings, first accompanying drawing 1, Reference numeral 1 wherein represents the stacking of a semiconductor laser, shown in accompanying drawing is the stacking of 6 semiconductor lasers, these laser instruments are all parallel being stacked, and it should be noted that herein, and laser instrument can also adopt other forms of, such as solid, as long as these laser instruments can be formed in similar Fig. 1 closely stacking.Mark 2 in accompanying drawing 1 represents completely reflecting mirror, completely reflecting mirror has two, be in respectively laser instrument stacking in the top that and that laser instrument bottom after, the angle that arranges of these two completely reflecting mirrors is become miter angle with the optical axis of laser instrument just right before it.It should be noted that, completely reflecting mirror can also select prism of turning back herein, as long as can play the effect of total reflection.Herein due to the restriction of installation space, be preferably micro-reflector herein.After remaining laser instrument, be all placed with a semi-transparent semi-reflecting lens 3, and the optical axis that the angle that these semi-transparent semi-reflecting lens 3 are placed is the laser instrument corresponding with it becomes miter angle.During laser instrument is stacking, the output of each laser instrument is penetrated by the front end of laser instrument, the front that laser instrument is stacking is provided with total reflection prism 4, impinge perpendicularly in the medium 5 needing to carry out nonlinear optical effect by the laser beam 7 of the stacking injection of laser instrument after total reflection prism reflects, participate in that the other beam of laser bundle 6 of nonlinear optical effect is then parallel to be incided in medium 5, like this, in medium 5, the two bundle laser beam participating in nonlinear optical effect intersect in medium 5 with vertical angle.
Wherein laser instrument stacking in each laser instrument output terminal cross section as shown in Figure 2, the cross section of the laser beam wherein emitted by each laser instrument is rectangle or approximate rectangular, this rectangle is greater than the length perpendicular to stacking direction in the length of laser instrument stacking direction, and length in the stacking direction under the condition allowed as far as possible close to the cross section length in the stacking direction of laser emitting end.Like this, after the reflection of total reflection prism, the laser beam of laser instrument stacking institute outgoing can form light distribution as shown in Figure 3 in medium 5, when the long edge lengths of laser beam is approximately equal to the long edge lengths of laser end face, the strip laser beam of an approximately continuous perpendicular media 5 so will be formed in medium 5, such laser obviously achieves crossing with the large area of laser beam 6, and does not produce any energy loss.
Simultaneously, because the laser beam participating in nonlinear optical effect needs the coherence with height, so laser instrument stacking below completely reflecting mirror 3 and semi-transparent semi-reflecting lens 2 are set, require that the rear end face of laser instrument has certain light transmission simultaneously, transmissivity General Requirements is greater than 0 and is less than 5%, by rear end face outgoing laser beam by completely reflecting mirror and semi-transparent semi-reflecting lens be coupled into stacking in other laser instruments in, they interpenetrate like this, mutual doping, finally define the laser beam being similar to common seed and exciting, so also just ensure that stacking by laser instrument in the laser beam emitted by each laser instrument and laser beam emitted by other laser instrument be all highly concerned with.Like this, the approximately continuous laser beam formed in medium 5 just can think an approximate overall beam of laser bundle, so just well solves the problem of coherence.
Claims (2)
1. a nonlinear optical effect device, comprise laser instrument stacking, total reflection prism, completely reflecting mirror, semi-transparent semi-reflecting lens, nonlinear optical effect medium, the stacking multiple laser instruments comprising stacked in parallel and arrange of described laser instrument, the stacking middle the top of described laser instrument and laser instrument rear are bottom provided with corresponding completely reflecting mirror, during described laser instrument is stacking, remaining laser instrument rear is provided with a semi-transparent semi-reflecting lens all separately, described two completely reflecting mirrors and the angle between described semi-transparent semi-reflecting lens and the optical axis of laser instrument corresponding are separately 45 degree, these completely reflecting mirrors and semi-transparent semi-reflecting lens for realize each laser instrument laser beam between coherence, the laser beam of each laser instrument during described laser instrument is stacking penetrates by the front end of laser instrument, the front stacking at described laser instrument is provided with total reflection prism, described total reflection prism is used for all laser beam by the stacking injection of laser instrument being reflected with the angle of 90 degree and impinging perpendicularly in nonlinear optical effect medium, the other beam of laser Shu Ze participating in nonlinear optical effect incides in nonlinear optical effect medium in a parallel manner, during described laser instrument is stacking, the rear end of each laser instrument all has certain transmissivity, this transmissivity is less than the transmissivity of laser instrument front end, the cross section of the laser beam emitted by each laser instrument is rectangle, this rectangle is greater than the length perpendicular to stacking direction in the length of laser instrument stacking direction, and length in the stacking direction allow condition under as far as possible close to the cross section length in the stacking direction of laser emitting end.
2. device according to claim 1, during described laser instrument is stacking, the transmissivity of each laser instrument rear end is greater than 0 and is less than 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310188307.4A CN103293820B (en) | 2013-05-16 | 2013-05-16 | Nonlinear optical effect device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310188307.4A CN103293820B (en) | 2013-05-16 | 2013-05-16 | Nonlinear optical effect device |
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| Publication Number | Publication Date |
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| CN103293820A CN103293820A (en) | 2013-09-11 |
| CN103293820B true CN103293820B (en) | 2016-03-02 |
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| CN201310188307.4A Expired - Fee Related CN103293820B (en) | 2013-05-16 | 2013-05-16 | Nonlinear optical effect device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109741670B (en) * | 2018-11-28 | 2021-06-11 | 安徽理工大学 | Nonlinear optical effect demonstration device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5946130A (en) * | 1997-10-03 | 1999-08-31 | Mcdonnell Douglas Corporation | Optical fiber amplifier network having a coherently combined output and high-power laser amplifier containing same |
| US6678294B1 (en) * | 2000-11-06 | 2004-01-13 | Northrop Grumman Corporation | Distributed feedback laser apparatus for avoiding stimulated brillouin scattering |
| CN101026289A (en) * | 2006-02-22 | 2007-08-29 | 吴镝 | Method and device for increasing line array laser beam space density |
| CN101320189A (en) * | 2008-07-14 | 2008-12-10 | 哈尔滨工业大学 | Non-colinear serial beam combination apparatus based on stimulated Brillouin scattering |
| CN101320190A (en) * | 2008-07-14 | 2008-12-10 | 哈尔滨工业大学 | Colinear serial beam combination apparatus based on stimulated Brillouin scattering |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6891660B2 (en) * | 2003-01-15 | 2005-05-10 | The Boeing Company | Stimulated brillouin scattering optical amplifier |
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2013
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5946130A (en) * | 1997-10-03 | 1999-08-31 | Mcdonnell Douglas Corporation | Optical fiber amplifier network having a coherently combined output and high-power laser amplifier containing same |
| US6678294B1 (en) * | 2000-11-06 | 2004-01-13 | Northrop Grumman Corporation | Distributed feedback laser apparatus for avoiding stimulated brillouin scattering |
| CN101026289A (en) * | 2006-02-22 | 2007-08-29 | 吴镝 | Method and device for increasing line array laser beam space density |
| CN101320189A (en) * | 2008-07-14 | 2008-12-10 | 哈尔滨工业大学 | Non-colinear serial beam combination apparatus based on stimulated Brillouin scattering |
| CN101320190A (en) * | 2008-07-14 | 2008-12-10 | 哈尔滨工业大学 | Colinear serial beam combination apparatus based on stimulated Brillouin scattering |
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| CN103293820A (en) | 2013-09-11 |
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Granted publication date: 20160302 Termination date: 20170516 |