Full solid serial pump laser

Abstract

The invention relates to a full sold serial pump laser, belonging to the technical filed of laser. In the prior art, the scheme that two pump sources pump two laser gain mediums in a composite cavity in a point-branching mode, thus having the disadvantages of complex structure, high price and difficult debugging, and serious gain competition exists in a single gain medium and double-wavelength resonance scheme, thus efficient and stable double-wavelength resonance is difficult to obtain. The laser is formed by compounding two resonant cavities, the first resonant cavity is composed of a first reflecting mirror and an output coupling mirror, and a first laser gain medium is arranged in the first resonant cavity; the second resonant cavity is composed of a second reflecting mirror and the output coupling mirror, and a second laser gain medium is arranged in the second resonant cavity, meanwhile, the second reflecting mirror and the second laser gain medium are arranged between the first laser gain medium and the output coupling mirror; the two resonant cavities use one output coupling mirror; a pump source pumps the first laser gain medium; and a frequency crystal is arranged between the second laser gain medium and the output coupling mirror. The scheme can obtain coherent radiation within the waveband from 480 nm to 510 nm.

Description

technical field [0001] The invention relates to an all-solid-state series pump laser, which can obtain coherent radiation in the 480-510nm band, and belongs to the field of laser technology. Background technique [0002] There are mainly two schemes in the prior art that can obtain coherent radiation in the 480-510 nm band. A document titled "All-solid-state continuous wave 501nm cyan laser" published in the 11th issue of Volume 38 of "Laser and Infrared" discloses a scheme, which uses two pump sources to pump the composite cavity Two laser gain media, such as Nd:YAG and Nd:YV0 4 ,pass 4 f 3 / 2 → 4 I 9 / 2 and 4 f 3 / 2 → 4 I 11 / 2 The transition produces 946nm and 1064nm wavelength resonant light, and a nonlinear crystal such as KTP is placed in the overlapping part of the composite cavity to perform sum frequency to obtain coherent radiation in the 480-510nm band. However, due to the use of two pump sources in this solution, one makes the structure of the laser complex...

AI Technical Summary

Problems solved by technology

However, in this scheme, in a single laser gain medium, the emission cross-sections of the 912nm and 1063nm wavelength fundamental frequency light differ by about 20 times, and there is a very strong gain competition between the two transition lines, making it difficult to obtain efficient and stable dual-wavelength oscillations, thus It is difficult to obtain efficient and stable coherent radiation in the 480-510nm band, and the sum-frequency efficiency is therefore reduced

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