A resonantly-pumped tunable Q-switched Ho:YAG ceramic laser with diffraction-limit beam quality

作者：Wang, Lei; Gao, Chunqing^*; Gao, Mingwei; Li, Yan; Yue, Fuyong; Zhang, Jian; Tang, Dingyuan

来源：Optics Express, 2014, 22(1): 254-261.

DOI：10.1364/OE.22.000254

• OPTICAL PARAMETRIC OSCILLATOR
• ROOM-TEMPERATURE
• CONTINUOUS-WAVE
• DIODE
• NM
• OUTPUT
• POWER

We demonstrated a Q-switched Ho:YAG ceramic laser operating at 2097 nm. The Ho:YAG ceramic laser was resonantly pumped by a Tm:YLF laser at 1908 nm. The laser performance with two Ho-doping concentrations of Ho:YAG ceramics in a U-shaped resonator was studied. Different pump spots were investigated to obtain high extract efficiency. The wavelength of Ho:YAG ceramic laser was tuned from 2090.70 nm to 2098.10 nm. The Q-switched pulse energy were 9.6 mJ at a pulse repetition frequency (PRF) of 200 Hz and 10.2 mJ at a PRF of 100 Hz, respectively. The beam quality M-2 factors were measured to be less than 1.1 in both directions.

• 出版日期2014-1-13
• 单位北京理工大学