OPTICAL NONLINEARITY IN A MODE-LOCKING DYE - OPTICAL LIMITING AND 4-WAVE-MIXING

被引：6

作者：

KUMAR, GR

RAJGARA, FA

RANGWALA, SA

机构：

[1] Tata Institute of Fundamental Research, Bombay, 400 005, Homi Bhabha Road

来源：

CHEMICAL PHYSICS LETTERS | 1995年 / 245卷 / 2-3期

关键词：

D O I：

10.1016/0009-2614(95)01007-V

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the optical nonlinearity resonantly induced by picosecond laser excitation in Kodak 9740 mode-locking dye. The observed nonlinearity is due to the participation of high-lying singlet states. The specific processes studied are optical limiting and phase conjugation. We infer that the mechanism underlying the limiting behaviour is due to two-photon absorption, and obtain a value for the two-photon absorption coefficient P. Further, we report the intensity dependence of the phase conjugate signal and obtain the corresponding third-order susceptibility.

引用

页码：287 / 291

页数：5

共 25 条

[1]

ASLANIDI EB, 1971, OPT SPECTROSC-USSR, V31, P233

[2]

BEZRODNYI VI, 1981, SOV PHYS JETP, V53, P259

[3]

BIRKS JB, 1970, PHOTOPHYSICS AROMATI, pCH6

[4] REVERSE SATURABLE ABSORPTION IN TETRAPHENYLPORPHYRINS [J].