Nonlinear absorption of Cr4+:YAG studied with lasers of different pulsewidths

被引：33

作者：

Yim, SH ^{[1
]}

Lee, DR ^{[1
]}

Rhee, BK ^{[1
]}

Kim, D ^{[1
]}

机构：

[1] Sogang Univ, Dept Phys, Seoul 100611, South Korea

来源：

APPLIED PHYSICS LETTERS | 1998年 / 73卷 / 22期

关键词：

D O I：

10.1063/1.122715

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A saturable absorber Cr4+:YAG, used for a passive Q switching of Nd: YAG laser was studied in order to understand the physical mechanism of nonlinear absorption (photobleaching). An optical bleaching experiment was carried out using the two pulsed lasers with duration of pico- and nanoseconds at 1.064 mu m wavelength. Experimental results were compared with numerical analysis of theoretical rate equations with all relevant energy levels. The inclusion of intersystem crossing between singlet- and triplet- excited states with reasonable rate of transition k(isc) was necessary to explain the difference in the saturation behaviors for nanosecond and picosecond laser pulses. (C) 1998 American Institute of Physics. [S0003-6951(98)02448-6].

引用

页码：3193 / 3195

页数：3

共 10 条

[1]

[Anonymous], 1992, SOLID STATE LASER EN

[2] SATURABLE ABSORBERS BASED ON IMPURITY AND DEFECT CENTERS IN CRYSTALS [J].