Properties of two-photon absorption-induced cavity lasing of an organic dye HEASPI pumped by picosecond infrared laser beam
✍ Scribed by Guangyong Zhou; Dong Wang; Xiaomei Wang; Xinguang Xu; Xiufeng Cheng; Zongshu Shao; Xian Zhao; Qi Fang; Minhua Jiang
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 94 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0030-3992
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✦ Synopsis
The ÿrst operation of cavity lasing of a two-photon absorption (TPA) organic dye, trans-4-[p-(N -ethyl-N -hydroxyethylamino) styryl]-N -methylpyridinium iodide (HEASPI), by using picosecond infrared laser as pump source is reported in this paper. Temporal proÿle of cavity lasing shows obvious oscillations, and magniÿcation of the feedback light can be obtained. By using the di erence of re-absorption coe cient at di erent conditions, we explained the blue shift for cavity lasing and superradiance compared with TPA-induced uorescence. The lifetime of TPA-induced uorescence is measured to be 134 ps.