Chinese Optics Letters, 2019, 17 (9): 091401, Published Online: Jul. 30, 2019
Dual-wavelength synchronously mode-locked Tm-doped bulk laser with terahertz frequency beating Download: 853次
Abstract
A dual-wavelength synchronously mode-locked homogeneously broadened bulk laser operating at 1985.6 and 1989 nm is presented for the first time, to the best of our knowledge, which delivers a maximum output power of 166 mW and a repetition rate of 85 MHz. The pulse duration was measured to be 16.8 ps by assuming a pulse shape. The recorded autocorrelation trace showed frequency beating signals with an interval of 3.8 ps and a full width at half-maximum duration of 2 ps, corresponding to an ultrahigh beating frequency of about 0.26 THz, which agrees well with the frequency difference of the emitted two spectral peaks. The results indicated that such a kind of dual-wavelength mode-locked Tm:YAlO3 laser could be potentially used for generating terahertz radiations.
Xinyang Liu, Xiaowen Li, Shengzhi Zhao, Kejian Yang, Lei Guo, Tao Li, Wenchao Qiao, Ming Li, Baitao Zhang, Jingliang He, Lihe Zheng, Liangbi Su, Jun Xu. Dual-wavelength synchronously mode-locked Tm-doped bulk laser with terahertz frequency beating[J]. Chinese Optics Letters, 2019, 17(9): 091401.