【摘要】 从非线性光学理论出发,数值计算了LBO晶体Ⅱ类相位匹配1064 nm光波倍频的走离角及互作用长度。在全匹配角范围内,1064 nm慢、快两光间夹角的范围是0~1.0°,θ≈0°。≈90°时,夹角为0°;θ≈45°,≈55°时,最大夹角约为1.0°。慢、快两基频光光斑线度相同时,波矢沿θ≈0°,≈88°方向入射时,其互作用长度最大。更多还原

【Abstract】 From nonlinear optics theory,type II frequency-doubling walk-off angle and interaction length of LBO crystal whose fundamental frequency wavelength is at 1064 nm were respectively calculated with numerical method.In the range of whole phase-matching angle,the angle range between the slow and the fast lights of 1064 nm is 0~1.0°.θ≈0°,≈90°,the angle is 0°;θ≈45°,≈55°,the maximum angle is approximately 1.0°.When the light-spot dimensions of slow and the fast lights are the same and wave vector incidents along the direction(θ≈0°,≈88°),the interactional length is the maximum.更多还原