【摘要】 <正> 染料激光器及高分辨激光光谱研究需要波长的绝对测量。为此,研制了这台高准确度波长计。 一、基本原理和设计考虑 在图1中,当参考和待测的激光光束同时射入干涉仪,在它们彼此同轴条件下,角锥反射镜沿导轨匀速移动一定距离,分别记录下两激光干涉条纹数,就可以求得待测激光的波长λ₂: λ₂=n₂/n₁·N₁/N₂λ₁ （1） 式中λ₁、λ₂分别为参考和待测激光真空波长;N₁、更多还原

【Abstract】 Model XCD-1 laser wavemeter is an interferometer with single corner-cube reflector. It can avoid cross-coupling between lasers. A calculator is used for calculation in the circuit. The influence of the lasing interruption of the dye laser can be eliminated by the phase-locked frequency multiplication technique and the envelope detection,automatic resetting. The wavemeter is calibrated with the saturated absorption of the spectral line of 23Na atom. Its absolute accuracy is up to 2 × 10-7.更多还原