Research Of 1064 Nm Narrow-Linewidth And Frequency-Stabilized All Solid State Laser Technology And Engineering

With the rapid development of laser technology,all-solid-state lasers have gradually expanded to high-level disciplines such as space detection,cold atom physics,and gravitational wave detection.These fields put forward higher requirements for the linewidth and frequency stability of laser light sources.However,traditional solid-state lasers have serious linewidth broadening due to effects such as multi-mode oscillation and spatial hole burning,and their output frequency also drifts irregularly under the interference of external factors.Based on the above background,this paper studies the 1064 nm narrow-linewidth and frequency-stabilized all-solid-state laser technology and the engineering of the laser:(1)The narrow linewidth technology and frequency stabilization technology are studied,and the seed injection and iodine molecular sideline frequency locking are theoretically deduced.(2)A narrow linewidth,stable frequency phase-locked seed optical module was studied.The frequency of seed was locked to the 1104 sideline of the iodine by edge-line frequency stabilization technology and the stability within 1h is 0.91 MHz.Through the optical phase-locked loop technology,the laser's frequency can be tuned(maximum range 10GHz).(3)The seed injection technology was studied,and a 1064 nm narrow linewidth stable frequency oscillator was prepared.The laser outputs a single longitudinal mode laser,with maximum energy of 10.17 m J,linewidth of 40.99 MHz,frequency stability within 1h of 1.35 MHz.The oscillator's laser is amplified to 101.65 m J by Master Oscillator Power Amplifier.(4)Two nonlinear frequency conversion technologies were studied.A 1197 nm laser is obtained by stimulated Raman scattering technology and the conversion efficiency is 46.6%.A 532 nm laser is generated through single-pass frequency doubling and the conversion efficiency is 67.4%.(5)The engineering of 1064 nm,532nm narrow-linewidth frequency stabilized laser was studied,and an engineering prototype was prepared.The prototype outputs a 30.1m J 1064 nm laser,with M~2 of 1.28,linewidth of 46.79 MHz,frequency stability within 1h of 1.29 MHz,energy stability of 0.2%,and a 60.3m J 532 nm laser,with pulsewidth of 8.29 ns,M~2 of 1.3,energy stability of 0.5%.The prototype has excellent frequency and linewidth characteristics,and it is expected to provide high-quality light sources for applications such as lidar and spectrum analysis.