Transverse mode transition and LG01-mode generation in an end-pumped Nd:YVO4 laser

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2013,（12）
• 页码范围: 59-62
• 页数: 4页
• 语种: 英文
• DOI: 10.3788/COL201311.121406

摘要

A laser-diode end-pumped Nd:YVO4 crystal laser is demonstrated to emit the first-order LaguerreGaussian (LG01) mode with 502-mW laser power and 22％ slope efficiency.The LG01-mode is lased only when the pumping area locates in the central part of the laser crystal's front surface,and thereafter the symmetrical LG01-HG01-TEM00 mode transition happens when laser crystal is moved laterally inside several-tens-micron area.The possible mechanism responsible for the phenomenon of symmetrical mode transition is also discussed.