Some Novel Infrared Laser Dyes of Superior Photostability Tunable From 1.30 to 1.52 µm | Zendy

Weimei Luo | Zendy; Zhenghua Zhu | Zendy; Yuguang Yao | Zendy; Lin Ye | Zendy; Xiangchun Yuan | Zendy

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Some Novel Infrared Laser Dyes of Superior Photostability Tunable From 1.30 to 1.52 µm

Author(s) -

Weimei Luo,

Zhenghua Zhu,

Yuguang Yao,

Lin Ye,

Xiangchun Yuan

Publication year - 1990

Publication title -

laser chemistry

Language(s) - English

Resource type - Journals

eISSN - 1026-8014

pISSN - 0278-6273

DOI - 10.1155/1990/59157

Subject(s) - chemistry , lasing threshold , laser , infrared , excitation , dye laser , far infrared laser , photochemistry , optoelectronics , analytical chemistry (journal) , optics , materials science , organic chemistry , physics , electrical engineering , engineering

Three new heptamethine pyrylium dyes containing a disubstituted amino group on the meso position intheir bridged chain were investigated. The solutions of the dyes in 1,2-dichloroethane (DCE) ofconcentration ca. 10 -3 M act as laser dyes transversely pumped by a Q-switched Nd:YAG laser as apumping source. 5.6 to 9.6% of the pump energy was converted to an intense infrared pulse withfrequencies between 6580 cm -1 (1.52 µm) and 7690 cm -1 (1.30/µm). The relation between lasing efficiency and dye concentration was also studied. These dyes show a remarkable photostability upon 1.06µm laser excitation and excellent storage stability without degassing.

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