茶溶液中饱和吸收产生热致非线性效应的研究

Study on optical nonlinearities induced by thermal effect from saturable absorption in tea liguid

本文利用单光束扫描法研究了在４８８ｎｍ波长下，一种花茶酒精溶液因饱和吸收所产生的热致非线性效应，测得其热光系数ｄｎ／ｄＴ为－１．２×１０－５℃１，饱和光强为５４ＫＷ／ｃｍ２。

Optical nonlinearities induced by thermal effect from saturable absorption in tea liquid are studied by Z-Scan technique using Ar+ laser.The thermooptic coefficient and saturation intensity of tea liquid are measured to be1.2×10-5℃ and 5.4kw/cm2 respectively.