A dual-wavelength mid-infrared source pumped by the Raman fiber oscillator

Jiacheng Feng; Peng Wang; Xi Cheng; Xiao Li; Weihong Hua; Kai Han

doi:10.1117/12.2553052

31 January 2020 A dual-wavelength mid-infrared source pumped by the Raman fiber oscillator

Jiacheng Feng, Peng Wang, Xi Cheng, Xiao Li, Weihong Hua, Kai Han

Proceedings Volume 11427, Second Target Recognition and Artificial Intelligence Summit Forum; 114273O (2020) https://doi.org/10.1117/12.2553052
Event: Second Target Recognition and Artificial Intelligence Summit Forum, 2019, Changchun, China

Abstract

In this paper, a novel dual-wavelength (DW) mid-infrared optical parametric oscillator (OPO) pumped by a DW Raman fiber oscillator is demonstrated. The DW Raman fiber oscillator fixed at 1070 nm and 1120 nm was obtained using a homemade linear-polarized 1070 nm fiber laser, a wavelength division multiplexer(WDM), a pair of fiber Bragg gratings (FBGs) and a 35-meter polarization-maintaining (PM) passive fiber. At first, only the 1070 nm laser performed the oscillation process and generated signal laser fixed at 1590 nm and idler laser fixed at 3270 nm. As the pump power continued to grow, more and more power was transferred to 1120 nm laser. When the 1120 nm laser was over 11.04 W, it also built its own optical parametric process independently and generated 1614nm signal laser and 3662 nm idler laser, while the oscillation corresponded to 1070 nm remained the same. The output total DW mid-infrared power reached 4.96 W with a maximum pump-idler conversion efficiency of 9.9%. This scheme was not only easy to complement, but also utilize the backward Raman laser to increase the efficiency. The experiment result shows great potential in spectral regulation and cascaded Raman fiber laser can also be used as the pump source to achieve multi-wavelength midinfrared output.

Citation Download Citation

Jiacheng Feng, Peng Wang, Xi Cheng, Xiao Li, Weihong Hua, and Kai Han "A dual-wavelength mid-infrared source pumped by the Raman fiber oscillator", Proc. SPIE 11427, Second Target Recognition and Artificial Intelligence Summit Forum, 114273O (31 January 2020); https://doi.org/10.1117/12.2553052

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