Quasi-continuous two-bar series inner cavity frequency multiflier high power green laser of 200 vatts grade

A quasi-continuous, high-power technology, applied in the laser field, can solve problems such as limiting light-to-light conversion efficiency and output power, output power instability, and unfavorable lasers, so as to improve frequency doubling conversion efficiency, increase output power, and beam quality Good results

Inactive Publication Date: 2007-07-18
SHAANXI XIDA KELIAO PHOTOELECTRIC TECH
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Problems solved by technology

On the one hand, the pumping source in the above technology adopts the form of lamp pumping, which has disadvantages such as low pumping efficiency, obvious thermal lens effect, and unstable output power, which is very unfavorable for the practical application of lasers; on the other hand, the resonator adopts Compared with the folded cavity structure, the two-mirror straight cavity structure has poor beam quality. Without inserting the second harmonic reflector, it can only correct the second harmonic generated by the fundamental frequency light passing through the frequency doubling crystal once. Wave to achieve effective output, which limits the further improvement of its light-to-light conversion efficiency and output power, which is not conducive to industrialization

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  • Quasi-continuous two-bar series inner cavity frequency multiflier high power green laser of 200 vatts grade

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing, content of the present invention will be further described:

[0018] Referring to the accompanying drawings, the first acousto-optic Q-switching crystal 4, the first laser crystal 5 and its first LD side pumping source 10, and the 90° quartz optical plate are sequentially arranged on the horizontal optical path of the incident plane total reflection end mirror 1 6. The second laser crystal 7 and its second LD side pumping source 11, the second acousto-optic Q-switching crystal 8, and the plano-concave folding mirror 2; the frequency doubling crystal 9 and the flat surface are sequentially placed on the optical path drawn by the plano-concave folding mirror 2 Concave total reflection end mirror3.

[0019] The first and second LD side pumping sources 10 and 11 are semiconductor laser pumping components of the same model, controlled by the same driving source, and each pumping component is composed of 30 20W laser diodes arra...

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Abstract

The invention relates to a 200 kilowatt-classed quasi-continuous frequency-doubled high-power green laser with two rods series connected with intracavity. It adopts the side-pumped Nd: YAG crystals of the same type of diode laser pumped component controlled by the same driver. It forms a stable 1064-based depolarized fundamental radiation in the folded resonator designed through the optimization of computer's simulation. It eventually achieves a 203.5W output of 532nm green laser with a conversion efficiency of 72.7% through the double-frequency by HGTR - KTP crystals, and dual acousto-optic Q technology and thermally-induced birefringence compensation technology.

Description

technical field [0001] The invention belongs to the field of laser technology, and in particular relates to a high-power green laser with 200-watt-level quasi-continuous double rods connected in series to an inner cavity for frequency doubling and dual acousto-optic Q-switching. Background technique [0002] Since the first ruby ​​laser came out in the 1960s, all kinds of lasers and laser technology have developed extremely rapidly, especially the development of high-power all-solid-state solid-state lasers is particularly eye-catching, with its large output energy, high peak power, and higher than CO 2 Gas lasers are widely used in laser medicine, laser material processing, optical storage, laser full-color display, scientific research, communication, national defense, entertainment and other fields due to their short wavelength, reliable operation, and long service life. At present, multi-rod cascading technology is the main method to increase the output power of all-solid...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/05H01S3/127H01S3/109H01S3/0941H01S3/16H01S3/06H01S3/042H01S3/08
Inventor 白晋涛任兆玉陈浩伟
Owner SHAANXI XIDA KELIAO PHOTOELECTRIC TECH
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