Basic enhancement of the overall optical efficiency of intracavity frequency-doubling devices for the 1 μm continuous-wave Nd:Y3Al5O12 laser emission

被引：26
作者：
Lupei, V
Pavel, N
Taira, T
机构：
[1] Inst Atom Phys, Solid State Quantum Elect Lab, R-76900 Bucharest, Romania
[2] Laser Res Ctr, Inst Mol Sci, Okazaki, Aichi 4448585, Japan
来源：
APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 18期
关键词：
ND-YAG CERAMICS; EMITTING LEVEL; RESONANT PUMP; EXCITATION; OPERATION; CRYSTALS; ND-YVO4;
D O I：
10.1063/1.1616667
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The possibility of basic enhancement of the overall optical-to-optical efficiency of intracavity frequency-doubling devices for the 1 mum continuous-wave (cw) Nd lasers by direct pumping into the emitting level and by using concentrated laser materials is discussed. This possibility is demonstrated for 1.0 and 2.4 at. % Nd:Y3Al5O12 (Nd:YAG) crystals pumped by a Ti:sapphire laser at 885 nm. A slope efficiency of 0.79 in absorbed pump power was obtained for the 1064 nm emission of a 1.0 at. % Nd:YAG crystal. The effect of enhancement of intracavity emission on the second-harmonic emission is manifested in a drastic reduction of emission threshold and in an increased dependence on the absorbed power. The use of concentrated Nd:YAG crystal enables a better use of the pump power and improves the overall optical efficiency of the intracavity frequency-doubling devices. (C) 2003 American Institute of Physics.
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收藏
页码：3653 / 3655
页数：3
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