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Low noise all solid-state blue laser resonant cavity

A laser resonator and all-solid-state technology, applied in the structure/shape of optical resonators, lasers, phonon exciters, etc., can solve problems such as noise, achieve improved output power, stable single longitudinal mode output, and simple structure Effect

Inactive Publication Date: 2007-10-24
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
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Problems solved by technology

[0009] The purpose of the present invention is to provide a low-noise all-solid-state blue laser resonator suitable for frequency doubling in a semiconductor laser pump cavity, so as to better solve its noise problem

Method used

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  • Low noise all solid-state blue laser resonant cavity
  • Low noise all solid-state blue laser resonant cavity
  • Low noise all solid-state blue laser resonant cavity

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Embodiment Construction

[0047] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.

[0048]Please refer to Fig. 6, Fig. 6 is the assembling schematic diagram of an embodiment of the present invention, as seen from the figure, the low-noise all-solid-state blue laser resonator of the present invention, comprises semiconductor laser 1 and the direction of the pumping light that sends along this semiconductor laser 1 is the same light A coupling mirror 2, a laser crystal 3, a type I phase matching frequency doubling crystal 6, and an output cavity mirror 7 arranged axially in sequence, are characterized in that a Etalon 4 and quartz crystal full-wave plate 5, the left end of the laser crystal 3 is coated with an anti-reflection coating for pump light and a high-reflection coating for fundamental frequency light, and the right end is coated with an anti-reflection coating for fundamental frequency light film, the left end of the output cavi...

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Abstract

The disclosed low-noise full-solid blue laser resonant cavity for I-type phase matching multiple frequency crystal comprises: a semi-conductor laser; on the pumping light direction, a coupling lens, a laser crystal with a standard tool and quartz crystal full-wave sheet between the crystal and an I-type phase matching multiple frequency crystal, and an output lens. This invention improves output stability and reduces laser noise efficiently.

Description

technical field [0001] The invention relates to an all-solid-state laser, in particular to a low-noise all-solid-state blue laser resonant cavity. Background technique [0002] The small-scale blue laser with frequency doubling in the cavity pumped by a semiconductor laser is a promising technology. The solution is to use a semiconductor laser to pump Nd:YAG, and suppress the oscillation at 1064nm and 1319nm by means of coating, so as to obtain Nd 3+ The 946nm transition ( 4 f 3 / 2 - 4 I 9 / 2 ) laser spectrum line, and then frequency doubling in the cavity with a frequency doubling crystal to obtain a blue laser output with a wavelength of 473nm. One of the main problems affecting the application of this laser is the large instantaneous fluctuation of the output, that is, the large noise. Studies have shown that the noise is mainly due to the sum frequency effect of the multi-longitudinal modes of the fundamental frequency in the frequency doubling crystal and the mutual ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/16H01S3/08H01S3/0941
Inventor 郭震朱健强
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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