CN202434882U - High peak power acousto-optic quality factor (Q) regulating laser for controlling acoustic wave transit time - Google Patents
High peak power acousto-optic quality factor (Q) regulating laser for controlling acoustic wave transit time Download PDFInfo
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- CN202434882U CN202434882U CN2011204771221U CN201120477122U CN202434882U CN 202434882 U CN202434882 U CN 202434882U CN 2011204771221 U CN2011204771221 U CN 2011204771221U CN 201120477122 U CN201120477122 U CN 201120477122U CN 202434882 U CN202434882 U CN 202434882U
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- acousto
- transit time
- peak power
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Abstract
The utility model belongs to the laser technology field, and relates to a high peak power acousto-optic Q regulating laser for controlling the acoustic wave transit time, characterized in that by adding two combined convex lenses, in an acousto-optic Q regulating laser, the waist radius omega 0 of an original light beam is reduced, and a monopulse having a high peak power is obtained. The high peak power acousto-optic Q regulating laser for controlling the acoustic wave transit time is formed by arranging an input lens, a laser gain medium, an acousto-optic Q switch and an output lens orderly, and the optical axes of all the parts are in the same straight line. The high peak power acousto-optic Q regulating laser for controlling the acoustic wave transit time is characterized in that two convex lenses are arranged between the laser gain medium and the acousto-optic Q switch, and the supersonic wave transit time during the acousto-optic Q regulating process is controlled by the focal lengths and positions of the two convex lenses; by adjusting the relation of the focal lengths and the positions of the convex lenses, the spot radius is reduced, so that the supersonic wave transit time is reduced, and accordingly, a more stable output pulse can be obtained.
Description
Technical field
The utility model belongs to laser technology field, is a kind of high-peak power acousto-optic Q modulation laser of controlling the sound wave transit time.
Background technology
In the Solid Laser Elements of existing acousto-optic Q modulation; When oscillation light passes through the ultrasonic field in the acousto-optic medium; Because of diffraction makes the original direction of BEAM SQUINT, cause the loss of resonant cavity to increase, the Q value descends; Laser generation can not form, this moment under pumping excitation on it energy level inverted population will constantly accumulate; If remove ultrasonic field this moment suddenly, then diffraction effect disappears immediately, and cavity loss reduces, the surge of Q value, and laser generation recovers rapidly, and its energy is with the form output of giant pulse.But in resonant cavity, ultrasonic wave is gradual change through the process of acousto-optic crystal, thereby can influence diffraction efficiency, and then causes the output pulse unstable, and peak power reduces.
Summary of the invention
The purpose of the utility model provides a kind of high-peak power acousto-optic Q modulation laser of controlling the sound wave transit time, through control hyperacoustic transit time of acousto-optic Q modulation, obtains the laser output of high-peak power.
The technical scheme of the utility model is a kind of high-peak power acousto-optic Q modulation laser of controlling the sound wave transit time; It is to be arranged in order by input mirror, gain medium, acoustooptic Q-switching and outgoing mirror to constitute; And the optical axis of each parts is on same straight line; It is characterized in that: two convex lens are arranged between gain medium and acoustooptic Q-switching, and hyperacoustic transit time is by the focal length and the Position Control of two convex lens in the acousto-optic Q modulation process.
Light beam is in acousto-optic Q modulation laser, and its oscillation light forms a two-way process.
The characteristics of the utility model are through regulating the relation of focal length of convex lens and position, reduce spot radius, and then reduce the ultrasonic wave transit time, thereby can obtain more stable output pulse, obtaining higher single pulse energy.
Description of drawings
To combine embodiment that the utility model is further described below.
Fig. 1 is a kind of structural representation of controlling the high-peak power acousto-optic Q modulation laser of sound wave transit time.
Among the figure: 1, input mirror; 2, gain medium; 3, convex lens one; 4, convex lens two; 5, acoustooptic Q-switching; 6, outgoing mirror.
Embodiment
As shown in Figure 1, input mirror 1, gain medium 2, acoustooptic Q-switching 5 and outgoing mirror 6 are arranged in order, and make their the same straight line A in optical axis edge.
Convex lens 1 and convex lens 24 are arranged between gain medium 2, acoustooptic Q-switching 5, and the optical axis of convex lens 1 and convex lens 24 also overlaps with straight line A.Hyperacoustic transit time is by the focal length and the Position Control of two convex lens in the acousto-optic Q modulation process.
Original beam is an example to go out pumping system, and pumping can be an end pumping, also can be profile pump.After light beam advances by input mirror 1 entering acousto-optic Q modulation laser; Oscillation light forms a round process; Promptly through passing through gain medium 2, convex lens 1, convex lens 24, acoustooptic Q-switching 5 and outgoing mirror 6 behind the input mirror 1 successively; Turn back by outgoing mirror 6 then, oppositely through getting back to input mirror 1 behind each parts.
In this acousto-optic Q modulation laser, the focal length and the position of convex lens 1 and convex lens 24, following to the influence of hyperacoustic transit time in the acousto-optic Q modulation process:
A light beam is through behind the convex lens, and spot radius can change.If the original beam waist radius is ω
0, be ω through the waist radius after first convex lens conversion
1, be ω through the waist radius after second convex lens conversion
2, two focal length of convex lens are respectively f
1And f
2, the ratio that changes through beam waist radius behind two convex lens so can be obtained by following formula:
Can know by above-mentioned formula, if the regulation and control ratio (being the regulation and control ratio of beam radius) of given transit time then can be calculated convex lens position and focal distance f
1, f
2Relation, and then can get the position distribution of convex lens.
In sum; Regulation and control ratio according to each transit time; Be the regulation and control ratio of beam radius, obtain desirable high-peak power pulse, only need through regulating the relation of focal length of convex lens and position; Just can control hyperacoustic transit time of acousto-optic Q modulation, obtain the laser output of high-peak power.
Claims (2)
1. high-peak power acousto-optic Q modulation laser of controlling the sound wave transit time; It is to be arranged in order by input mirror, gain medium, acoustooptic Q-switching and outgoing mirror to constitute; And the optical axis of each parts is on same straight line; It is characterized in that: two convex lens are arranged between gain medium and acoustooptic Q-switching, and hyperacoustic transit time is by the focal length and the Position Control of two convex lens in the acousto-optic Q modulation process.
2. according to a kind of high-peak power acousto-optic Q modulation laser of controlling the sound wave transit time described in the claim 1, it is characterized in that: light beam is in acousto-optic Q modulation laser, and its oscillation light forms a two-way process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204771221U CN202434882U (en) | 2011-11-25 | 2011-11-25 | High peak power acousto-optic quality factor (Q) regulating laser for controlling acoustic wave transit time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204771221U CN202434882U (en) | 2011-11-25 | 2011-11-25 | High peak power acousto-optic quality factor (Q) regulating laser for controlling acoustic wave transit time |
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| Publication Number | Publication Date |
|---|---|
| CN202434882U true CN202434882U (en) | 2012-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011204771221U Expired - Fee Related CN202434882U (en) | 2011-11-25 | 2011-11-25 | High peak power acousto-optic quality factor (Q) regulating laser for controlling acoustic wave transit time |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496845A (en) * | 2011-11-25 | 2012-06-13 | 白雪天 | Design method of control power acousto-optic Q-switch laser |
-
2011
- 2011-11-25 CN CN2011204771221U patent/CN202434882U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496845A (en) * | 2011-11-25 | 2012-06-13 | 白雪天 | Design method of control power acousto-optic Q-switch laser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XI-AN UNIV. OF ELECTRONIC SCIENCE AND TECHNOLOGY Free format text: FORMER OWNER: BAI XUETIAN Effective date: 20120918 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 710300 XI AN, SHAANXI PROVINCE TO: 710071 XI AN, SHAANXI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120918 Address after: Taibai Road Shaanxi Yanta District 710071 city of Xi'an province No. 2 Patentee after: Xidian University Address before: 710300 Shaanxi city of Xi'an province Huxian Fengjing Road No. 122 Patentee before: Bai Xuetian |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20131125 |