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Optical Engineering

Modulation frequency characteristics of the Q-switched envelope in a doubly Q-switched and mode-locked laser with acousto-optic modulator and Cr4+:YAG saturable absorber
Author(s): Junpeng Qiao; Jia Zhao; Yufei Li; Shengzhi Zhao; Guiqiu Li; Dechun Li; Wenchao Qiao; Hongwei Chu
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Paper 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.

Paper Details

Date Published: 24 November 2015
PDF: 5 pages
Opt. Eng. 54(11) 116107 doi: 10.1117/1.OE.54.11.116107
Published in: Optical Engineering Volume 54, Issue 11
Show Author Affiliations
Junpeng Qiao, Shandong Univ. (China)
Jia Zhao, Shandong Univ. (China)
Yufei Li, Shandong Univ. (China)
Shengzhi Zhao, Shandong Univ. (China)
Guiqiu Li, Shandong Univ. (China)
Dechun Li, Shandong Univ. (China)
Wenchao Qiao, Shandong Univ. (China)
Hongwei Chu, Shandong Univ. (China)


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