TITLE

Two-photon induced amplified spontaneous emission from needlelike triphenylamine-containing derivative crystals with low threshold

AUTHOR(S)
Qi-Dai Chen; Hong-Hua Fang; Bin Xu; Jie Yang; Hong Xia; Fei-Peng Chen; Wen-Jing Tian; Hong-Bo Sun
PUB. DATE
May 2009
SOURCE
Applied Physics Letters;5/18/2009, Vol. 94 Issue 20, p201113
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Two-photon induced amplified spontaneous emission (ASE) characteristics of a needlelike crystal were studied. Under two-photon excitation, the upconverted light emission was confined within the crystal and self-waveguided along the needle axis then radiated from the needle tips. The full width at half maximum of the two-photon excited fluorescence reaches 6.5 nm and ASE threshold is as low as 0.29 mJ pulse-1 cm-2 for the N-(4-(4-(4-(diphenylamino)styryl)styryl)phenyl)-N-phenylbenzene amine crystal, comparable with those achieved by single-photon pumping. The needlelike crystal is shown to be a promising candidate for frequency up-converted organic semiconductor microlasers.
ACCESSION #
40125712

 

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