Resonant cavity for frequency-selecting 355nm ultraviolet laser in optical fiber end surface pumping Brewster angle cavity

An ultraviolet laser, fiber end face technology, used in lasers, laser parts, phonon exciters, etc., can solve the problem of insufficient stability of the resonator, ensure the length, improve the stability and service life, and ensure a single frequency laser. output effect

Inactive Publication Date: 2015-06-17
WUXI QINGYUAN LASER TECH
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The resonant cavity structure commonly used in the prior art is difficult to meet the requirements of high output power and high beam quality at the same time, and the stability of the resonant cavity is not enough, which needs to be improved

Method used

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  • Resonant cavity for frequency-selecting 355nm ultraviolet laser in optical fiber end surface pumping Brewster angle cavity

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0015] As shown in the figure: the resonant cavity in the embodiment is used on the frequency-selective 355nm ultraviolet laser in the fiber end-pumped Brewster angle cavity, which is mainly composed of a front mirror 1, a YVO4 crystal 2, an acousto-optic Q switch 3, The turning mirror 4, the triple frequency LBO crystal 5, the plano-convex front double frequency LBO crystal 6 and the rear mirror 7 are composed of parts.

[0016] Such as figure 1 As shown, the front mirror 1, YVO4 crystal 2, acousto-optic Q switch 3 and turning mirror 4 are arranged sequentially from back to front along the exit direction of the 808nm pump laser; the 808nm pump laser enters through the front mirror 1 and Excite the YVO4 crystal 2 to generate 1064nm laser; the 1064nm laser enters the turning mirror 4 through the acousto-optic Q switch 3, and then refracts and exits after passi...

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Abstract

The invention relates to a resonant cavity for a frequency-selecting 355nm ultraviolet laser in an optical fiber end surface pumping Brewster angle cavity. A front reflective mirror, a YVO4 crystal, an acousto-optic Q switch and a turning mirror are sequentially arranged along the 808nm pumping laser emergent direction; the 808nm pumping laser enters via the front reflective mirror and excites the YVO4 crystal so as to generate 1064nm laser; the 1064nm laser enters the turning mirror, and is refracted and reflected outside by the turning mirror; a three-frequency-multiplication LBO crystal is arranged in front of the emergent direction of the 1064nm laser which is refracted and reflected outside by the turning mirror; the 1064nm laser refracted and reflected by the turning mirror is refracted by the three-frequency-multiplication LBO crystal and then exits; and a two-frequency-multiplication LBO crystal and a rear reflective mirror are sequentially arranged in front of the exit direction of the 1064nm laser refracted by the three-frequency-multiplication LBO crystal. The resonant cavity is ingenious in structure and reasonable in design, the balance between the high output power and high light beam quality can be reached perfectly, and the laser output power and optical quality can be stabilized.

Description

technical field [0001] The invention relates to an ultraviolet laser, in particular to a resonant cavity for a frequency-selective 355nm ultraviolet laser in an optical fiber end-pumped Brewster angle cavity, belonging to the technical field of ultraviolet light generating devices. Background technique [0002] Laser is one of the major inventions in modern science and technology. Among them, the application value of 355nm ultraviolet laser in non-metal and precision processing is particularly prominent. The global demand for high-quality cold light source lasers is increasing, and the application fields are expanding. Obtaining an ultraviolet laser with excellent beam quality, single frequency, and long-term stable operation is of great significance to the precision processing industry and non-metal processing industry. Starting from the development of the laser industry and economic benefits, it is also the general trend. [0003] Ultraviolet laser is a short-wavelength,...

Claims

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Application Information

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IPC IPC(8): H01S3/081H01S3/109
Inventor 曾军河李建军
Owner WUXI QINGYUAN LASER TECH
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