Widely-tunable mid-infrared fiber-feedback optical parametric oscillator

Tingting Yu; Jianan Fang; Kun Huang; Heping Zeng

doi:10.1117/12.3036663

8 November 2024 Widely-tunable mid-infrared fiber-feedback optical parametric oscillator

Tingting Yu, Jianan Fang, Kun Huang, Heping Zeng

Author Affiliations +

Proceedings Volume 13232, Advanced Lasers, High-Power Lasers, and Applications XV; 132320T (2024) https://doi.org/10.1117/12.3036663
Event: SPIE/COS Photonics Asia, 2024, Nantong, Jiangsu, China

Abstract

We devise and implement two variants of mid-infrared Optical Parametric Oscillators (OPOs) based on a polarization-maintaining fiber-feedback cavity, which allow to robustly deliver sub-picosecond MIR pulses without the need of active stabilization. The first one integrates an erbium-doped fiber into the OPO cavity as the additional gain medium. The synergistic dual-gain operation significantly reduces the pump threshold to launch a stable MIR pulse formation. The other OPO configuration adopts a chirped-poling nonlinear crystal in a passive-fiber cavity to achieve a broader operational spectral range. The wide phase-matching bandwidth facilitates easy wavelength tuning by simply adjusting the cavity length through the dispersion filtering effect. Therefore, the presented mid-infrared OPO source is featured with high compactness, robust operation, and wide tunability, which would be attractive for subsequent applications, such as infrared photonics, biomedical examination, and molecular spectroscopy.

Citation Download Citation

Tingting Yu, Jianan Fang, Kun Huang, and Heping Zeng "Widely-tunable mid-infrared fiber-feedback optical parametric oscillator", Proc. SPIE 13232, Advanced Lasers, High-Power Lasers, and Applications XV, 132320T (8 November 2024); https://doi.org/10.1117/12.3036663

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