Abstract

Narrowed spectra at 452  nm from a thin platelike crystal of distyrylbenzene derivative, 2,5-diphenyl-1,4-distyrylbenzene with two trans double bonds (trans-DPDSB) grown by vapor deposition, are observed. The trans-DPDSB crystal is irradiated by the third harmonic (355   nm) of a Nd:YAG laser. The FWHM of the narrowed spectra can reach 6  nm for the crystal when the pumping energy is 400μJ/pulse. The threshold value for an optically pumped laser is approximately 350μJ/pulse.

© 2007 Optical Society of America

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