Acta Photonica Sinica ›› 2019, Vol. 48 ›› Issue (6): 614001-0614001.doi: 10.3788/gzxb20194806.0614001

• Lasers and Laser Optics • Previous Articles     Next Articles

Temperature Characteristics of Frequency Separation in Nd-doped Dual-frequency Microchip Laser

ZOU Yu-ling1, HU Miao1,2, LI Peng2,3, OU Jun1, ZHOU Xue-fang1, YANG Guo-wei1, LU Yang1, BI Mei-hua1   

  1. 1. College of Communication Engineering, Hangzhou Dianzi University, Hangzhou 310018, China;
    2. State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China;
    3. Research Institute of Chemical Defense, Beijing 102205, China
  • Received:2019-01-22 Online:2019-06-25 Published:2019-04-18
  • Supported by:

    The National Natural Science Foundation of China (No.61705055), the National Key Laboratory of Nuclear and Biochemical Disaster Protection Foundation of China(No.SKLNBC2015G03)


The frequency separation temperature characteristics of Nd-doped Dual-frequency Microchip Lasers (DFMLs) were studied. The frequency separation versus the crystal temperature of DFML with different cavity lengths and different kinds of gain medium are experimented. The experimental results show that, the frequency separation is inversely proportional to the cavity length, and positively related to the crystal temperature. The frequency separation change rates with crystal temperatures of 0.5 mm, 0.8 mm and 1 mm DFML (Nd:YVO4) are 0.34 GHz/℃, 0.12 GHz/℃ and 0.04 GHz/℃, the shorter the cavity length is, the greater frequency separation change with the crystal temperature is. The frequency separation change rate with crystal temperature of 1 mm DFML (Nd:YVO4) and (Nd:GdVO4) is nearly same, the simulation agrees with the experimental results well.

Key words: Optical cavity, Dual-Frequency Microchip Laser (DFML), Nd3+ doped laser crystal, Temperature control, Frequency separation tuning

CLC Number: