High power full solid 455nm pulsed laser in narrow line width

Abstract

Characters of structure of the whole solid laser in 455nm pulse includes parts along light forwarding direction: pulse adjusted Q laser, frequency-doubling crystal, system for shaping and coupling pump light beam, laser cavity of titanium gem, frequency-doubling crystal for titanium gem laser. Seed laser outputted from seed laser injection system of outer cavity injects to resonant cavity of titanium gem laser. Through frequency-doubling crystal, output of the 532nm laser is obtained from 1064nm laser outputted from pulse adjusted Q laser. Through system for shaping and coupling pump light beam, the 532nm laser enters to the resonant cavity of titanium gem laser. Seed laser injection system controls line width of laser outputted from titanium gem laser. Through frequency-doubling crystal, output of 455nm pulse laser is obtained from 910nm laser of titanium gem laser system. Features are: compact structure, small size, high efficiency, long service life and stable operation.

Description

technical field [0001] The invention relates to an all-solid-state laser, in particular to a medium-high power narrow-linewidth all-solid-state pulse 455nm laser. Background technique [0002] The blue-green band is the seawater window, so the blue-green laser has great application potential in underwater communication and ocean detection. At present, in underwater laser communication, in order to reduce the solar background, it is hoped that the wavelength of the emitting light source can be 455nm corresponding to the cesium Cs atomic filter, and the laser beam quality and energy requirements are relatively high. In laser-to-underwater target communication and differential absorption radar, it is not only required to obtain a stable, high-efficiency, high-energy laser output that meets the required wavelength, but also requires that the beam divergence angle of the laser light source should be as small as possible, so as to increase the transmission distance of the laser. ...

AI Technical Summary

Problems solved by technology

The method of using the sum frequency to obtain blue light needs to ensure the synchronization of the pulses sent by the two lasers that generate the laser required by the sum frequency. The system is more complicated, the adjustment is cumbersome, the stability is poor, and the sum frequency efficiency is generally relatively low.

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