A linearly polarized 1123 nm Nd:YAG laser using a Fabry-Perot filter as output mirror

作者：Wang Zhongfa; Wang Xiaozhong^*; Cai Mingchun; Bu Yikun; Chen Lujian; Cai Guoxiong

来源：Optics Communications, 2014, 330: 143-146.

DOI：10.1016/j.optcom.2014.05.044

• Diode-pumped lasers
• Fabry-Perot filter polarization

We propose and demonstrate an 1123 nm Nd:YAG laser by exploiting a dielectric Fabry-Perot band-pass filter as laser output mirror. A fiber-pigtailed 808 nm laser diode array is used to pump an <111> -cut Nd:YAG crystal with a piano-plane resonator cavity. The dielectric Fabry-Perot filter as output mirror is specially designed to suppress the strong emission around 1064 nm and facilitate the oscillation of 1123 nm weak emission. A linearly polarized 1122.5 nm laser is achieved. The maximum output power of the laser is 105 mW and the slope conversion efficiency is 4.58% with the threshold pump power of 2.9 W Passively Q-switched 1123 nm laser is realized using a [100]-cut Cr:YAG crystal as Q-switch. FWHM pulse width of 121 ns and pulse repetition rate of 2.3 kHz is achieved at pump power of 53 W. The design principle of the Fabry-Perot filter used as output mirror is discussed and the advantages of the method are summarized.

• 出版日期2014-11-1
• 单位厦门大学