Efficient up-conversion fluorescence in charge transfer compound crystal

• DOI: 10.1063/1.113472
• Publication Date: 2002-07-26T12:27:32Z
• Authors: H. Z. Wang; X. G. Zheng; W. D. Mao; Z. X. Yu; Z. L. Gao; G. Q. Yang; P. F. Wang; S. K. Wu
• Keywords: Two-Photon Absorption; Crystal (programming language)

A series of new intramolecular charge transfer compounds with absorption bands in shorter wavelengths have been synthesized. Bright visible light emits from the crystals these under infrared pulsed laser pumping. The spectral and pump density dependent properties demonstrate that some emissions are up-conversion fluorescence due to two photon absorption. fluorescent yields one- two-photon same order at high density. This work demonstrates good candidates for nonlinear optical materials.