Spectrally tailored mid-infrared super-continuum generation in a buried waveguide spanning 1750 nm to 5000 nm for atmospheric transmission (original) (raw)

This research presents a method for mid-infrared super-continuum generation using nonlinear spectral broadening in a buried chalcogenide waveguide, targeting improvements in atmospheric transmission. With a spectral bandwidth exceeding 3500 nm from 1700 nm to 5200 nm, the technique minimizes atmospheric absorption losses, particularly from carbon dioxide, by centering the pump wavelength on CO2 absorption features. Experimental results highlight the successful reshaping of femtosecond pulse spectra, emphasizing potential applications for remote sensing, directed infrared countermeasures, and medical diagnostics.