Dynamic properties and optical phase conjugation of two-photon pumped ultrashort blue stimulated emission in a chromophore solution

Guang S. He,* Hai-Yan Qin, Qingdong Zheng, Paras N. Prasad, Steffen Jockusch, Nicholas J. Turro, Marlin Halim, Dalibor Sames, Hans Ågren, and Sailing He Institute for Lasers, Photonics and Biophotonics, Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260-3000, USA Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, USA Department of Theoretical Chemistry, Royal Institute of Technology, S-106 91 Stockholm, Sweden Centre for Optical and Electromagnetic Research, Zhejiang University, Hangzhou 310058, China Received 23 October 2007; revised manuscript received 15 November 2007; published 23 January 2008