中国物理B ›› 2012, Vol. 21 ›› Issue (10): 104201-104201.doi: 10.1088/1674-1056/21/10/104201
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
金肖a, 李中国b, 张学如b, 杨昆b, 王玉晓b, 宋瑛林b
Jin Xiao (金肖)a, Li Zhong-Guo (李中国)b, Zhang Xue-Ru (张学如)b, Yang Kun (杨昆)b, Wang Yu-Xiao (王玉晓)b, Song Ying-Lin (宋瑛林)b
摘要: The transmittance technique with a phase object (T-PO), for measuring optical nonlinear coefficients is proposed with a top-hat beam. The sensitivity of the T-PO with a top-hat beam is a factor of 4 greater than that with a Gaussian beam. The validity of this method is verified by measuring the nonlinearity of a well-characterized liquid, CS2 at 532-nm wavelength. The ease of use of this method has been proved by measuring a new compound 4-(N-methyl, N-hydroxyethyl)amino, 4'-nitroazobenzene(ANAB) at 600-nm wavelength, indicating that this method can be extended to the measurement of optical nonlinearities in a wide-band spectrum.
中图分类号: (Wave propagation, transmission and absorption)