Small absorption coefficient of fifteen organic solvents and water were measured at 514. 5nm by means of oppositely crossed laser thermal lens spectrometry using argon ion laser as pump source. Higher sensitivity was obtained.

• 本工作采用反向交叉式双光束激光热透镜光谱法；以氩离子激光作泵浦光源；在514.；5nm波长条件下；测量了十五种有机溶剂和水的极小的吸收系数；获得了较高的测量灵敏度。