2-10 {\mu}m Mid-infrared Supercontinuum Generation in As2Se3 Photonic Crystal Fiber

TL;DR

This paper demonstrates the generation of a hyper-broadband mid-infrared supercontinuum from 2 to 10 micrometers using a 4 micrometer pump in As2Se3 photonic crystal fiber, enabling high spectral flatness and broad coverage.

Contribution

First demonstration of ultra-broadband supercontinuum generation from 2 to 10 micrometers in As2Se3 photonic crystal fiber with high spectral flatness.

Findings

Achieved supercontinuum from 2 to 10 micrometers.

Utilized As2Se3 photonic crystal fiber with low loss and high nonlinearity.

Enabled high-performance mid-infrared laser source.

Abstract

For the first time, we demonstrated that a hyper-broadband from 2{\mu}m to 10{\mu}m can be generated with a high spectral flatness by using a ~4 um pump and an As2Se3 photonic crystal fiber. The broad and flat dispersion profile and the low guiding loss of the endlessly single-mode As2Se3 photonic crystal fibers combining with the high nonlinearity and wide mid-infrared transparent window of As2Se3 chalcogenide glass are essential for this high performance mid-infrared laser source.