Mid-infrared frequency comb with 25 pJ threshold via CW-seeded optical parametric generation in nonlinear waveguide

Vainio, Markku

Mid-infrared frequency comb with 25 pJ threshold via CW-seeded optical parametric generation in nonlinear waveguide

Version 2 2021-08-13, 15:15

Version 1 2021-08-13, 15:15

Posted on 2021-08-13 - 15:15

We demonstrate efficient generation of mid-infrared frequency combs based on continuous-wave-seeded femtosecond optical parametric generation in nonlinear waveguides. Conversion of the near-infrared pump to signal and idler light takes place with very high efficiency (74 %) and the threshold (25 pJ) is over 300 times lower than in bulk analogs. Relative intensity noise of the mid-infrared comb is exceptionally low, below 5×10-5 (detector-limited, integrated from 10 Hz to 2 MHz). Furthermore, the mid-infrared bandwidth can be increased by driving the process with broadband pump obtained via supercontinuum generation.

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Roiz, Mikhail; Lai, Jui-Yu; Karhu, Juho; Vainio, Markku (2021). Mid-infrared frequency comb with 25 pJ threshold via CW-seeded optical parametric generation in nonlinear waveguide. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.5520207.v1

https://doi.org/10.6084/m9.figshare.c.5520207.v1

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