High-power and high optical conversion efficiency diode-end-pumped laser with multi-segmented Nd:YAG/Nd:YVO4

• 来源期刊: 中国物理B（英文版）
• 关键词: diode-pumped solid-state laser multi-segmented crystals (Nd:YAG+Nd:YVO4) spectral line matching diode-laser temperature
• 年，卷（期）: 2018,（9）
• 页码范围: 347-352
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1056/27/9/094207

摘要

A novel flat-flat resonator consisting of two crystals(Nd:YAG+Nd:YVO4)is established for power scaling in a diode-end-pumped solid-state laser.We systematically compare laser characteristics between multi-segmented(Nd:YAG+Nd:YVO4)and conventional composite(Nd:YAG+Nd:YAG)crystals to demonstrate the feasibility of spec-tral line matching for output power scale-up in end-pumped lasers.A maximum continuous-wave output power of 79.2 W is reported at 1064 nm,with M2x =4.82,M2y =5.48,and a pumping power of 136 W in the multi-segmented crystals(Nd:YAG+Nd:YVO4).Compared to conventional composite crystals(Nd:YAG+Nd:YAG),the optical-optical conversion efficiency of multi-segmented crystals(Nd:YAG+Nd:YVO4)from 808 nm to 1064 nm is enhanced from 30％to 58.8％,while the laser output sensitivity as affected by the diode-laser temperature is reduced from 55％to 9％.