1.5 J high-beam-quality Nd∶LuAG ceramic active mirror laser amplifier

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2020,（2）
• 页码范围: 48-50
• 页数: 3页
• 语种: 英文
• DOI: 10.3788/COL202018.021401

摘要

A 1.5 J Nd∶LuAG ceramic active mirror laser amplifier with a high beam quality is demonstrated in which a 0.8％ (atomic fraction) Nd-doped Nd∶LuAG ceramic disk with a diameter of 64 mm and a thickness of 5.5 mm is used as a laser gain medium.A maximum single-pass small-signal gain of 2.59 is measured when the pump energy is 11.5 J,with an injected seed energy of 0.4 J;a maximum output energy of 1.5 J is obtained at the repetition rate of 10 Hz.A far-field beam spot 1.25 times the diffraction limit (DL) is achieved by using a stimulated Brillouin scattering phase conjugation mirror (SBS-PCM) for wavefront correction.