Fourth-order cascaded Raman shift in a birefringence ZBLAN fluoride fiber

作者：Cheng, Tonglei^*; Gao, Weiqing; Xue, Xiaojie; Suzuki, Takenobu; Ohishi, Yasutake

来源：Optical Fiber Technology, 2017, 36: 245-248.

DOI：10.1016/j.yofte.2017.04.005

• Fourth-order cascaded Raman shift
• Birefringence fluoride fiber
• Picosecond fiber laser

We investigate fourth-order cascaded Raman shift in a birefringence ZrF4-BaF2-LaF3-AlF3-NaF (ZBLAN) fluoride fiber, which is the first demonstration of cascaded Raman shift in fluoride fibers. The pump source is a commercially available 1064 nm picosecond fiber laser. At the average pump power of similar to 7W, fourth-order cascaded Raman shift is observed if the pump pulse is polarized to the slow axis, and third-order cascaded Raman shift is obtained if the pump pulse is polarized to the fast axis. The Raman shift generation is simulated by the generalized nonlinear Schrodinger equation (GNLSE), and the results are in good agreement with the experiments.

• 出版日期2017-7
• 单位合肥工业大学