Jpn. J. Appl. Phys. 49 (2010) 062601 (3 pages)  |Previous Article| |Next Article|  |Table of Contents|
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Observation of Complex Optical Processes in ZnSe under Extreme Optical Excitation from a Kilojoule-Class Nd:Glass Laser

Tomoharu Nakazato, Yusuke Furukawa, Toshihiko Shimizu, Marilou Cadatal-Raduban, Elmer Estacio, Nobuhiko Sarukura, Akiyuki Shiroshita, Kazuto Otani, Toshihiko Kadono, Keisuke Shigemori, and Hiroshi Azechi

(Received September 18, 2009; accepted March 6, 2010; published online June 21, 2010)

In this paper, we report on three-photon fluorescence and the possible observation of other complex optical processes in a ZnSe crystal for a kilojoule-class, 100 ps pulse, Nd:glass laser excitation. The emission properties of the ZnSe crystal and its excitation energy dependence were investigated under low and high-energy excitations. A 15 to 10 nm full width at half maximum (FWHM) spectral collapse, a 5 nm blue shift, and a shortened lifetime of fluorescence under high-energy excitation could indicate an amplified spontaneous emission. These findings present the feasibility of investigating the dynamics and spectral properties of three-photon fluorescence and other complex nonlinear optical processes in ZnSe at an extremely high excitation energy.

URL: http://jjap.jsap.jp/link?JJAP/49/062601/
DOI: 10.1143/JJAP.49.062601

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