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Proceedings Paper

Nd:YAG laser with passive-active mode-locking
Author(s): Weijiang Zhao; Zhenlei Chen; Deming Ren; Yanchen Qu; Shuang Mo; Jinjer Huang; Yury M. Andreev; Vadim A. Gorobets; Vladimir O. Petukhov; Aleksei A. Zemlyanov
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Paper Abstract

All solid-state flash-lamp pumped passive-active mode-locked Nd3+:YAG laser is designed and experimentally studded. Saturation absorber Cr4+:YAG with initial transparency 25 and 47% are used as a passive Q-switcher and acousto-optical fused quartz modulator as an active mode-locker. Efficient length of the laser cavity with fixed mirror positions (1.45 m spaced) is droved by changes of 100% flat mirror for concave mirrors with different focus lengths. Changeable output mirrors with transparencies of 15 and 50% are used. Driving of the cavity parameters, laser and acousto-optical modulator power supply voltages let us to control output pulse train and single pulse parameters. As it goes from the analyses of oscillograms fixed with pyroelectric detector (τ=0.5 ns) and 1 GHz oscilloscope, over 95% of pulse output energy has been mode-locked. Average duration of the pulse train envelope of 5 to 50 single pulses at FWHM has been droved within 50 to 600 ns. When this single pulse duration is controlled but did not exceed 2 ns.

Paper Details

Date Published: 29 April 2008
PDF: 8 pages
Proc. SPIE 7006, Lasers for Measurements and Information Transfer 2007, 70060A (29 April 2008); doi: 10.1117/12.802265
Show Author Affiliations
Weijiang Zhao, Harbin Institute of Technology (China)
Zhenlei Chen, Harbin Institute of Technology (China)
Deming Ren, Harbin Institute of Technology (China)
Yanchen Qu, Harbin Institute of Technology (China)
Shuang Mo, Harbin Institute of Technology (China)
Jinjer Huang, Harbin Univ. of Science and Technology (China)
Yury M. Andreev, Institute of Monitoring of Climatic and Ecological Systems (Russia)
Vadim A. Gorobets, Institute of Physics (Belarus)
Vladimir O. Petukhov, Institute of Physics (Belarus)
Aleksei A. Zemlyanov, Tomsk State Univ. (Russia)

Published in SPIE Proceedings Vol. 7006:
Lasers for Measurements and Information Transfer 2007
Vadim E. Privalov, Editor(s)

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