All-solid-state Q-switching frequency multiplication non-diffracting laser device

Abstract

The invention discloses an all-solid-state Q-switching frequency multiplication non-diffracting laser device. The all-solid-state Q-switching frequency multiplication non-diffracting laser device comprises an optical table, a semiconductor laser unit which can continuously output light beams with a 808nm wave length, a focusing lens, a first plane mirror, a working substance which can absorb pump light with 808nm wave length and output light beams with a 1064nm wave length, a Q-switching crystal applicable to a 1064nm wave band, a frequency multiplication crystal applicable to frequency multiplication with a 1064nm wave length, a second plane mirror and a shaft pyramid, wherein the semiconductor laser, the focusing lens, the first plane mirror, the working substance, the Q-switching crystal, the frequency multiplication crystal, the second plane mirror and the shaft pyramid are positioned on the optical table in a supported mode in sequence. According to the technical scheme, the all-solid-state Q-switching frequency multiplication non-diffracting laser device can obtain impulse type Bessel light beams which are high in output power and good in quality of non-diffracting light beams, can simplify experimental instruments, and can reduce experimental cost.

Description

technical field [0001] The invention relates to the field of optics, in particular to an all-solid-state Q-switched frequency-multiplied non-diffraction laser for generating Bessel beams. Background technique [0002] The non-diffracting beam was first proposed by J. Durnin in 1987, because its light field distribution has the first kind of zero-order Bessel function J 0 form, it is also called Bessel beam. During the propagation process, the cross-sectional light intensity distribution of the non-diffraction beam does not change with the increase of the distance, and the central light intensity is extremely high, and obstacles can be reconstructed. Local hollow beams (Bottle beams) can be obtained through beam transformation. Non-diffracting beams can be widely used in precise measurement and collimation, manipulation of atomic and nanoscale particles, imaging and information extraction of biological cells, nonlinear optics and other fields. [0003] The LD-pumped solid-s...

AI Technical Summary

Problems solved by technology

However, the Nd:YAG laser pumped by the xenon lamp needs a circulating water cooling system, which is bulky and expensive; the xenon lamp and the working substance are sealed in the concentrating cavity, and it is cumbersome to clean or replace the working substance

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