Stable Q-switch mode-locking of Nd:YVO4 lasers with a semiconductor saturable absorber

被引：49
|
作者：
Theobald, C. [1 ]
Weitz, M. [1 ]
Knappe, R. [2 ]
Wallenstein, R. [1 ]
L'huillier, J. A. [1 ]
机构：
[1] Tech Univ Kaiserslautern, Fachbereich Phys, D-67663 Kaiserslautern, Germany
[2] Lumera Laser GmbH, D-67661 Kaiserslautern, Germany
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 2008年 / 92卷 / 01期
关键词：
D O I：
10.1007/s00340-008-3073-8
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
This paper reports on a passively mode-locked and Q-switched Nd:YVO4 laser generating picosecond pulses with an average output power exceeding 7 W. In a first step Q-switch mode-locking was obtained by self Q-switching of a mode-locked oscillator with appropriate cavity design, pump power and output coupling. In a second system the Q-switching was actively controlled and stabilized by modulating the resonator internal losses with an acousto-optic modulator. In the Q-switch mode-locking operation the laser provided 12.8 ps long mode-locked pulses with a repetition rate of 80 MHz. The repetition rate of the Q-switch envelope was 185 kHz. The maximum pulse energy of a single ps pulse was 0.55 mu J which is 5.5 times the pulse energy measured for cw mode locking. The total energy of the pulses within the Q-switch envelope was 42 mu J.
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页码：1 / 3
页数：3
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