中国物理B ›› 2013, Vol. 22 ›› Issue (12): 124204-124204.doi: 10.1088/1674-1056/22/12/124204
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
常建华a, 孙青b, 葛益娴a, 王婷婷b, 陶在红a, 张闯a
Chang Jian-Hua (常建华)a, Sun Qing (孙青)b, Ge Yi-Xian (葛益娴)a, Wang Ting-Ting (王婷婷)b, Tao Zai-Hong (陶在红)a, Zhang Chuang (张闯)a
摘要: A novel widely tunable dual-wavelength mid-IR difference frequency generation (DFG) scheme with uniform grating periodically poled lithium niobate (PPLN) is presented in this paper. By using the temperature-dependent dispersion property of PPLN, the quasi-phase matching (QPM) peak for the pump may evolve into two separate ones and the wavelength spacing between them increases with the decrease of the crystal temperature. Such two pump QPM peaks may allow simultaneous dual-wavelength mid-IR laser radiations while properly setting the two fundamental pump wavelengths. With this scheme, mid-IR dual-wavelength laser radiations at around 3.228 and 3.548, 3.114 and 3.661, and 3.019 and 3.76 μm, are experimentally achieved for the crystal temperatures of 90, 65, and 30 ℃, respectively, based on the fiber laser fundamental lights.
中图分类号: (Fiber lasers)