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Proceedings Paper

80-W green KTP laser used in photoselective laser vaporization of the prostrate by frequency doubling of Yb3+ -doped large-mode area fiber laser
Author(s): Hongxing Xia; Zhengjia Li
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Paper Abstract

Photoselective laser vaporization of the prostate (PVP) is the most promising method for the treatment of benign prostatic hyperplasia (BPH), but KTP lasers used in PVP with lamp-pumped are low efficient .To increase the efficiency , we develop a 80-W, 400kHz, linearly polarized green laser based on a frequency-doubled fiber laser. A polarization-maintaining large-mode area (LMA) fiber amplifier generate polarized 1064nm fundamental wave by amplifying the seed signal from a composite Cr4+:YAG-Nd3+:YAG crystal fiber laser. The fundamental wave is injected into a KTP crystal with confined temperature management to achieve second harmonic generation (SHG). The overall electrical efficiency to the green portion of the spectrum is 10%.80-W maintenance-free long-lifetime KTP laser obtained can well satisfy the need of PVP.

Paper Details

Date Published: 1 May 2007
PDF: 7 pages
Proc. SPIE 6534, Fifth International Conference on Photonics and Imaging in Biology and Medicine, 653420 (1 May 2007); doi: 10.1117/12.741617
Show Author Affiliations
Hongxing Xia, Huazhong Univ. of Science and Technology (China)
Zhengjia Li, Huazhong Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 6534:
Fifth International Conference on Photonics and Imaging in Biology and Medicine
Qingming Luo; Lihong V. Wang; Valery V. Tuchin; Min Gu, Editor(s)

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