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Semiconductor laser pumping folding single-channel passive Q regulation pulse sum frequency laser

A laser pumping and laser technology, applied in the laser field, can solve the problems of lack of beam waist, low power density of oscillating beam, low luminous efficiency of laser, etc. The effect of efficiency

Inactive Publication Date: 2006-11-29
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology

This laser is a semiconductor laser pumped single-channel in-line compound cavity active Q-switched pulse sum frequency laser. Compared with the folded type, the in-line type lacks a beam waist, the power density of the oscillating beam is low, and the laser luminous efficiency is low.

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  • Semiconductor laser pumping folding single-channel passive Q regulation pulse sum frequency laser
  • Semiconductor laser pumping folding single-channel passive Q regulation pulse sum frequency laser

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Embodiment Construction

[0009] As shown in FIG. 2 , the semiconductor laser 10 is the pumping source of the laser of the present invention, and the function of the optical coupling system 11 is to couple the pumping light emitted by the semiconductor laser 10 into the gain medium 13 . Both light-transmitting surfaces of the gain medium 13 are prepared for the wavelength λ 1 and lambda 2 Dual-wavelength AR coating with greater than 98% transmittance. The reflective cavity mirror 12 is a plano-concave mirror, and the preparation of the film system on the concave surface requires the wavelength λ 1 and lambda 2 All have a reflectivity greater than 98%, and at the same time have a transmittance greater than 92% for the wavelength of the pump light emitted by the semiconductor laser 10, and the preparation of the planar film system requires a transmittance greater than 94% for the wavelength of the pump light. The film system preparation requirements of the reflection surface of the output coupling mir...

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Abstract

This invention relates to a semiconductor laser pump folded single channel passive Q modulation pulse sum frequency laser, which applies a gain medium and two passive Q modulation crystals to form two resonant cavities sharing one folded optical transmission channel to realize passive Q modulation pulse sum frequency laser output. Since there are corsets on the two arms of the folded cavity, one of which is in the arm of the gain medium, the basic mode is matched with the incident pump optical mode to get the maximum pump efficiency, the other one is in the arm of the non-linear sum frequency crystal, the basic frequency optical corsets can be reduced effectively and its power density is increased and high sum frequency is got under the situation of matching the focal length of the beam and the crystal length of the sum frequency crystal and the density is not higher than the harm threshold of the crystal and its surface.

Description

technical field [0001] The invention relates to a semiconductor laser-pumped solid-state laser for obtaining sum-frequency pulse laser output, and belongs to the field of laser technology. Background technique [0002] With the continuous development of laser technology, its application fields are becoming more and more extensive, and at the same time, the requirements for laser parameters are getting higher and higher. In order to obtain high peak power, Q-switching technology is required. Q-switching technology includes rotating mirror Q-switching, dyeing Q-switching, electro-optic Q-switching, acousto-optic Q-switching, etc. At present, the most commonly used Q-switching method is acousto-optic Q-switching. The acousto-optic Q-switching works stably. Generally, the pulse width can reach tens of ns, and the frequency is not higher than 50KHz. The advantage of electro-optic Q-switching is that narrower optical pulses and higher repetition rates can be obtained. However, e...

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Application Information

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IPC IPC(8): H01S3/00H01S3/0941H01S3/05H01S3/06H01S3/08H01S3/108H01S3/127
Inventor 吕彦飞张喜和姚治海卢俊李昌立
Owner CHANGCHUN UNIV OF SCI & TECH
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