Studies on the Two-Photon Pumped Upconverted Fluorescence and Superradiance of a New Organic Dye Material in Solutions
Applied Optics, Vol. 41, Issue 30, pp. 6371-6374 (2002)
http://dx.doi.org/10.1364/AO.41.006371
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Abstract
The linear and nonlinear optical properties of a new organic dye, trans-4-[p-(N-ethyl-N-ethylamino)-styryl]-N-methyl-pyridinium tris(thiocyanato) cadmates (II), are reported in this paper. When pumped with a picosecond laser at the wavelength range of 850–1200 nm, intense upconversion fluorescence can be obtained. The upconversion efficiencies at different pump energies were measured when pumped with a 1064-nm laser beam from a mode-locked Nd:YAG laser. The highest upconversion efficiencies were measured to be 5.8% and 7.6% in dimethyl formamide (DMF) and methanol. The lifetime of the dye in DMF was measured to be 75 ps. The strongest nonlinear absorption was at the wavelength of 940 nm, and the highest upconversion efficiency was at the wavelength of 1030 nm. The difference of the two wavelengths was caused by excited state absorption in the dye at wavelengths shorter than 1000 nm. The dye solution in DMF and methanol show a clear optical power limiting effect.
© 2002 Optical Society of America
[Optical Society of America ]
OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.2050) Lasers and laser optics : Dye lasers
(190.4180) Nonlinear optics : Multiphoton processes
(190.7220) Nonlinear optics : Upconversion
Citation
Guangyong Zhou, Dong Wang, Shengjun Yang, Xinguang Xu, Yan Ren, Zongshu Shao, Minhua Jiang, Yupeng Tian, Fuying Hao, Shengli Li, and Pengfei Shi, "Studies on the Two-Photon Pumped Upconverted Fluorescence and Superradiance of a New Organic Dye Material in Solutions," Appl. Opt. 41, 6371-6374 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-30-6371
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