870 mW blue laser emission at 480 nm in a large core thulium doped ZBLAN fiber laser

被引：9

作者：

El-Agmy, R. M. ^{[1
]}

Al-Hosiny, N. M. ^{[1
]}

机构：

[1] Univ Taif, Dept Phys, At Taif, Saudi Arabia

来源：

LASER PHYSICS | 2010年 / 20卷 / 04期

关键词：

UP-CONVERSION LASERS; LIGHT GENERATION; OPERATION; TM;

D O I：

10.1134/S1054660X10070066

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on high power 870 mW continuous wave stable laser operation at 480 nm in a 1000 ppm wt. Thulium doped multimode ZBLAN up-conversion fiber laser. The fiber is pumped by a wavelength of 1064 nm generated from diode-pumped Nd:YAG laser. A threshold of 550 mW and slope efficiency of 14% with respect to the incident pump power has been obtained. The related problem of photo-degradation associated with formation of color centers is reported. The transparency of the darkened fiber prior to the lasing operation is restored by circulating 514 nm through the fiber core. The time dependant oscillatory behavior of the emitted laser is also addressed.

引用

页码：838 / 841

页数：4

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