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Astigmatism self-compensation solid laser

A solid-state laser, self-compensating technology, applied in the laser field, can solve the problems of increasing the complexity of the temperature control device, increasing the laser cavity loss, unfavorable laser efficiency, etc., to widen the stable range, realize the conversion efficiency, and reduce the cavity loss. Effect

Inactive Publication Date: 2011-11-16
SHANXI UNIV
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Problems solved by technology

[0005] However, methods 1, 2, and 3 need to insert additional optical components into the resonator, and the insertion of additional components increases the cavity loss of the laser, which is not conducive to improving the efficiency of the laser.
The third compensation method is not suitable for use in linearly polarized lasers, and non-linearly polarized laser output is not conducive to the generation of frequency-doubled light
The fourth method requires precise control of the temperature in all directions of the crystal, which greatly increases the complexity of the temperature control device

Method used

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  • Astigmatism self-compensation solid laser

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Embodiment approach

[0040] On the basis of the above embodiments, a Q-switching element can be inserted into the resonant cavity to obtain pulsed laser output.

[0041] On the basis of the above embodiments, Nd:YLF crystal, Nd:KGW crystal, etc. can be selected as the gain medium 7 to compensate for the astigmatism formed by the resonant cavity.

[0042] On the basis of the above embodiments, resonant cavities with other structures can be selected, such as V-shaped cavity, 6-mirror cavity, etc., to compensate each other with the astigmatism of the thermal lens of the gain medium 7 .

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Abstract

The invention provides an astigmatism self-compensation solid laser, which comprises a pump source, a resonant cavity and a gain medium, wherein the gain medium has thermal lens astigmatism; the resonant cavity is an astigmatic cavity; and the gain medium is arranged in the resonant cavity in a way that the direction, with relatively poorer thermal effects, of the gain medium is in the meridian plane of the resonant cavity and the direction with relatively better thermal effects is in the sagittal plane of the resonant cavity. The solid laser can be obtained by compensating the astigmatism of the resonant cavity and the thermal lens astigmatism without inserting an additional astigmatism compensation element, and is high in output power, conversion efficiency, beam quality and stability, simple, convenient and reliable.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to an astigmatic self-compensating solid-state laser. Background technique [0002] In high-power solid-state lasers, serious thermal lens effects limit the improvement of laser output power and beam quality. Alleviating and compensating the thermal effect of the gain medium is the key to developing high-power lasers. Alleviating the thermal effect of the gain medium can be achieved by using bonded crystals, laser crystals with low doping concentration, and tuning the wavelength of the pump source (deviating from the absorption wavelength of the gain medium). [0003] In the design of high-power lasers, not only the thermal lens effect of the gain medium must be mitigated, but also the thermal lens effect of the gain medium must be compensated. The ideal thermal lens can be treated as a thin lens, and the compensation method is relatively simple, which can be compensated by inserti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/13
Inventor 郑耀辉王雅君彭堃墀
Owner SHANXI UNIV
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