Q adjusting method for steady cavity/unsteady cavity of laser diode end-face pump solid laser

A technology of laser diodes and solid-state lasers, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of complexity, thermal effect and insertion loss, and reducing the conversion efficiency of pump light to output laser, etc.
CN101588012AInactive Publication Date: 2009-11-25XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2009-11-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to a laser diode end-face pump solid laser, especially a Q adjusting method for a steady cavity / unsteady cavity of the laser diode end-face pump solid laser, including at least a pump source laser diode for forming a laser, a coupling system and a laser resonant cavity, the laser resonant cavity includes a laser crystal and an output mirror and is characterized in that a light output face of the output mirror is fixed with a piezoelectric ceramic device, the telescoping variation of the piezoelectric ceramic device is controlled by electrical signals to drive the output mirror to move right and left along an optical axis, when the length of the resonant cavity is smaller than the focal distance of a crystal thermal lens due to the telescoping variation, the laser resonant cavity emits laser, when the length of the resonant cavity is more than the focal distance of the crystal thermal lens due to the telescoping variation, the resonant cavity is in an unsteady state and the attrition of the resonant cavity is larger without laser output. The invention may simplify the structure of a Q adjusting laser, avoid the attrition and other badness effects due to the insertion of optical elements, and implement a high light-light translation efficiency.
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Description

technical field

[0001] The invention relates to a laser diode end-pumped solid-state laser, in particular to a stable-cavity-unstable-cavity Q switching method in the laser diode end-pumped solid-state laser. Background technique

[0002] Laser diode end-pumped solid-state lasers are usually composed of a pump source laser diode, a coupling system, and a resonant cavity. The resonant cavity includes a laser crystal and a cavity mirror. The laser crystal can convert pump light energy into laser energy. The crystal pump end-face coating As a cavity mirror, the output mirror surface coating acts as another cavity mirror. For laser diode end-pumped solid-state lasers, due to effects such as quantum difference losses, only part of the total injected energy is converted into laser output, and most of the remaining energy is converted into heat dissipation. Due to the joint effect of the uneven distribution of pumping light and the heat dissipation system around the crystal, the t...

Claims

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