Short-pulsed gain-switched Cr2+:ZnSe laser

被引：2
|
作者：
Gorajek, L. [1 ]
Jabczynski, J. K. [1 ]
Kaskow, M. [1 ]
机构：
[1] Mil Univ Technol, Inst Optoelect, PL-00908 Warsaw, Poland
来源：
LASER PHYSICS LETTERS | 2014年 / 11卷 / 04期
关键词：
mid-infrared; gain-switching; pulse generators; chalcogenides; short pulse; DOPED FIBER LASER; POWER;
D O I：
10.1088/1612-2011/11/4/045803
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report the first demonstration of gain-switched, ultra-low-threshold Cr2+:ZnSe laser generating pulses as short as 1.75 ns. A diode pumped Tm3+:YLF laser delivering up to 5 mJ energy in 11 ns pulses was utilized as a pump source. The laser operated at 20 Hz repetition rate with 0.1 duty factor allowing us to reduce thermal effects in an active crystal. In a short resonator (length, 70 mm) we obtained more than 0.5 mJ of output energy and 300 kW of corresponding peak power. The Cr2+:ZnSe laser was characterized by very low losses manifesting themselves by an extremely low generation threshold of less than 7 mu J and very high slope efficiency (reaching the quantum efficiency) determined with respect to absorbed pump power.
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页数：4
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