Extract from Abstract
Online — “Light sources and detectors in the mid-infrared have been inferior to those in the visible or near-infrared, in terms of power, bandwidth, and sensitivity, severely limiting the performance of infrared experimental techniques.”
This article demonstrates the generation of femtosecond radiation with up to 5 W at 4.1 micrometers and 1.3 W at 8.5 micrometers, corresponding to an order-of-magnitude average power increase for ultrafast light sources operating at wavelengths longer than 5 micrometers.
The presented concept is based on power-scalable near-infrared lasers emitting at a wavelength near 1 micrometers, which pump optical parametric amplifiers.
In addition, both wavelength tunability and supercontinuum generation are reported, resulting in spectral coverage from 1.6 to 10.2 micrometers with power densities exceeding state-of-the-art synchrotron sources over the entire range. Read more Multi-watt, multi-octave, mid-infrared femtosecond source