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Proceedings Paper

1 nanosecond E-O Q-switched Nd:YVO4 laser
Author(s): Chi Feng; Qiang Li; Meng-hua Jiang; Jin-guo Wang; Wei-rong Guo
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Paper Abstract

This paper introduces a novel kind of E-O Q-switched Nd:YVO4 compact laser with ultra-narrow pulse width. In this paper, the general equations describing Q-switched laser operation are given and the factors about cavity length, laser gain medium, the loss inner resonator and pump energy to influence the laser pulse width are analyzed theoretically. These parameters greatly optimized experiment. The fiber-coupled laser-diode end-pumped laser we developed simplifies the conventional structure of E-O Q-switched lasers. The cavity length is effectively reduced to 19mm to narrow the pulse width. The pulse width of 1.049ns is obtained and the single pulse energy reaches to 0.32mJ. This 1 nanosecond laser has the advantage in reliable and outstanding performance with simplified structure. Most importantly, we investigated the performance of an innovative RTP crystal in the Q-switched laser with high repetition frequency. It was experimentally proven that this narrow pulse width laser can operate with high repetition frequency because of the novel Q-switched crystal RTP with great performance. Both theoretical analysis and experiment data demonstrate that sub-nanosecond pulses can also be produced with E-O Q-switching technique. Thus, this technique can be widely applied.

Paper Details

Date Published: 20 August 2011
PDF: 6 pages
Proc. SPIE 8192, International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging, 81920D (20 August 2011); doi: 10.1117/12.896697
Show Author Affiliations
Chi Feng, Beijing Univ. of Technology (China)
Qiang Li, Beijing Univ. of Technology (China)
Meng-hua Jiang, c (China)
Jin-guo Wang, Beijing Univ. of Technology (China)
Wei-rong Guo, Beijing Univ. of Technology (China)


Published in SPIE Proceedings Vol. 8192:
International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging

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