Study of a 2-J pulsed Fe:ZnSe 4-μm laser

被引：69
作者：
Frolov, M. P. [1 ,2 ]
Korostelin, Yu V. [1 ]
Kozlovsky, V. I. [1 ]
Mislavskii, V. V. [1 ,2 ]
Podmar'kov, Yu P. [1 ,2 ]
Savinova, S. A. [2 ]
Skasyrsky, Ya K. [1 ]
机构：
[1] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
[2] State Univ, Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Region, Russia
来源：
LASER PHYSICS LETTERS | 2013年 / 10卷 / 12期
关键词：
ZINC CHALCOGENIDES; RANGE; TEMPERATURE; ZNSE; EFFICIENT; CRYSTAL;
D O I：
10.1088/1612-2011/10/12/125001
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report the results of a study of a pulsed Fe:ZnSe laser for temperatures ranging from 85 to 295 K. With a free-running Er:YAG laser, operating at 2.94 mu m, as a pump source, a maximum output energy of 2.1 J at 85 K was produced at a wavelength of 4.1 mu m. The optical-to-optical efficiency of the laser was 35% at maximum energy while the maximum absorbed energy slope efficiency was as high as 51%. By operating at 245 K (a temperature which can be easily reached using thermoelectric coolers) we achieved 1.3 J of output energy from an Fe:ZnSe laser, with a slope efficiency of 29% (23% optical-to-optical efficiency). The maximum output energy reached 42 mJ at room temperature (295 K). The temperature dependence of the lifetime of the T-5(2) energy level of Fe2+ in ZnSe was studied in the 275-365 K temperature range. The activation energy for nonradiative relaxation was found to be 2235 cm(-1).
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页数：6
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