Supercontinuum generation in a standard single-mode fiber by a Q-switched Tm, Ho:YVO4 laser

作者：Ren Jiancun; Zhou Renlai^*; Lou Shuli; Hou Wenbo; Ju Youlun; Wang Yuezhu

来源：Chinese Optics Letters, 2014, 12(9): 090605.

DOI：10.3788/COL201412.090605

Broadband mid-infrared (IR) supercontinuum laser is generated in standard single-mode fiber-28 directly pumped by a 2054 nm nanosecond Q-switched Tm, Ho:YVO4 laser. The average output powers of 0.53 W in the similar to 1.95-2.5 mu m spectral band and 0.65 W in the similar to 1.97-2.45 mu m spectral band are achieved at pulse rate frequencies of 7 and 10 kHz, and the corresponding optic-to-optic conversion efficiencies are 34.6% and 42.4% by considering the coupling efficiency. The output spectra have extremely high flatness in the range 2060-2400 and 2060-2360 nm with negligible intensity variation (<2%), respectively. The output pulse shape is not split, and pulse width is reduced from 29 to similar to 15.4 ns. The beam quality factor M-2 is 1.06, measured using traveling knife-edge method, and the laser beam spot is also monitored by an IR vidicon camera.

• 出版日期2014-9-10
• 单位中国人民解放军海军航空工程学院; 哈尔滨工业大学