Thermal influence of saturable absorber in passively Q-switched diode-pumped cw Nd:YAG/Cr4+:AG laser

被引：27

作者：

Song, J ^{[1
]}

Li, C ^{[1
]}

Ueda, K ^{[1
]}

机构：

[1] Univ Electrocommun, Inst Laser Sci, Tokyo 1828585, Japan

来源：

OPTICS COMMUNICATIONS | 2000年 / 177卷 / 1-6期

基金：

日本学术振兴会;

关键词：

passively Q-switched; saturable absorber; thermal lensing effect; resonator design; diode pumped; high output;

D O I：

10.1016/S0030-4018(00)00565-4

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Theoretical and experimental studies of a high output passively Q-switched diode-pumped cw Nd:YAG laser with Cr4+:YAG crystal as saturable absorber are presented. The thermal lensing effect of the saturable absorber is estimated considering the spatial and time intensity dependence of the saturable absorption on laser pulses. Treating it as a second thermal lens, the thermal and mechanical stability of a resonator with two thermal lenses is analyzed which shows that the thermal effect of the saturable absorber is an important fact in resonator design for high output lasers. As a result, an average output power of 7-12 W and pulse duration of 100-250 ns was obtained with kilohertz repetition rates. The highest peak power and pulse energy obtained were 30 kW and 3.4 mJ, respectively. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：307 / 316

页数：10

共 17 条

[1] Single-mode high-peak-power passively Q-switched diode-pumped Nd:YAG laser [J].

Afzal, RS ;

Yu, AW ;

Zayhowski, TJ ;

Fan, TY .

OPTICS LETTERS, 1997, 22 (17) :1314-1316

[2] Diode-pumped neodymium lasers repetitively Q-switched by Cr4+:YAG solid-state saturable absorbers [J].

Agnesi, A ;

DellAcqua, S ;

Morello, C ;

Piccinno, G ;

Reali, GC ;

Sun, ZY .

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 1997, 3 (01) :45-52

[3] 1.5 Watt passively Q-switched diode-pumped cw Nd:YAG laser [J].

Agnesi, A ;

DellAcqua, S ;

Reali, GC .

OPTICS COMMUNICATIONS, 1997, 133 (1-6) :211-215

[4] Passively Q-switched Nd:YVO4 laser with a Cr4+:YAG crystal saturable absorber [J].

Bai, YX ;

Wu, N ;

Zhang, J ;

Li, JQ ;

Li, SQ ;

Xu, J ;

Deng, PZ .

APPLIED OPTICS, 1997, 36 (12) :2468-2472

[5] Passively Q-switched diode-pumped Nd:YVO4/Cr4+:YAG single-frequency microchip laser [J].

Chen, YF ;

Huang, TM ;

Wang, CL .

ELECTRONICS LETTERS, 1997, 33 (22) :1880-1881

[6] Passive Q-switching of an intracavity frequency doubled diode-pumped Nd:YVO4/KTP green laser with Cr4+:YAG [J].

Chen, YF .

IEEE PHOTONICS TECHNOLOGY LETTERS, 1997, 9 (11) :1481-1483

[7] Passively Q-switched Nd:YAG ring lasers with high average output power in single-frequency operation [J].

Freitag, I ;

Tunnermann, A ;

Welling, H .

OPTICS LETTERS, 1997, 22 (10) :706-708

[8] Passive Q switching of a diode-pumped 946-nm Nd:YAG laser with 1.6-W average output power [J].

Kellner, T ;

Heine, F ;

Huber, G ;

Kuck, S .

APPLIED OPTICS, 1998, 37 (30) :7076-7079

[9] RESONATORS FOR SOLID-STATE LASERS WITH LARGE-VOLUME FUNDAMENTAL MODE AND HIGH ALIGNMENT STABILITY [J].

MAGNI, V .

APPLIED OPTICS, 1986, 25 (01) :107-117

[10] Continuous wave thermal loading in saturable absorbers: theory and experiment [J].

Sennaroglu, A .

APPLIED OPTICS, 1997, 36 (36) :9528-9535

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