Comparative laser performances of pyrromethene 567 and rhodamine 6G dyes in copper vapour laser pumped dye lasers

被引：0
作者：
Ray, A. K. [1 ]
Kundu, S.
Sasikumar, S.
Rao, C. S.
Mula, S.
Sinha, S.
Dasgupta, K.
机构：
[1] Bhabha Atom Res Ctr, Div Laser & Plasma Technol, Bombay 400085, Maharashtra, India
[2] Bhabha Atom Res Ctr, Div Bioorgan, Bombay 400085, Maharashtra, India
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 2007年 / 87卷 / 03期
关键词：
D O I：
10.1007/s00340-007-2625-7
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Narrowband laser performances and photochemical stability of alcoholic solutions of pyrromethene 567 and rhodamine 6G dyes, under high-repetition rate copper vapour laser (at 510 nm), as well as, high-peak intensity Nd:YAG laser (at 532 nm) excitation have been investigated. We have observed that pyrromethene 567 dye solutions offer higher efficiency, wider tuning range, but lower photochemical stability and higher lasing threshold than that of rhodamine 6G dye solutions. An addition of about 100 mM DABCO, as a singlet oxygen quencher, in pyrromethene 567 dye solutions improved its photochemical stability close to that of rhodamine 6G. The observation of higher slope efficiency, in spite of higher threshold pump energy for pyrromethene 567 dye than that of rhodamine 6G dye solutions, was explained by a predictive model on gain characteristics of both dye solutions as a function of pump energy.
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页码：483 / 488
页数：6
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