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- Title
Modulation frequency characteristics of the Q-switched envelope in a doubly Q-switched and mode-locked laser with acousto-optic modulator and Cr<sup>4+</sup>:YAG saturable absorber.
- Authors
Junpeng Qiao; Jia Zhao; Yufei Li; Shengzhi Zhao; Guiqiu Li; Dechun Li; Wenchao Qiao; Hongwei Chu
- Abstract
The modulation frequency characteristics of the Q-switched envelope in a doubly Q-switched and mode-locked Nd:GGG laser with an acousto-optic modulator (AOM) and Cr4+:YAG saturable absorber are given. At a fixed incident pump power, the repetition rates of the Q-switched envelope and the related laser characteristics versus the modulation frequency of AOM for different small signal transmissions of Cr4+:YAG saturable absorbers have been measured. The experimental results show that the repetition rates of the Q-switched envelope, the average output power, the average peak power, and the pulse widths of the Q-switched envelopes are subharmonics of the modulation frequency at a fixed incident pump power. Furthermore, the mechanism for these behaviors is discussed.
- Subjects
DIGITAL signal processing; Q-switched lasers; CHROMIUM; MODE-locked lasers; ACOUSTO-optical modulators; YAG lasers
- Publication
Optical Engineering, 2015, Vol 54, Issue 11, p1
- ISSN
0091-3286
- Publication type
Article
- DOI
10.1117/1.OE.54.11.116107