title: Milliwatt-level mid-infrared (10.5-16.5 μm) difference frequency generation with a femtosecond dual-signal-wavelength optical parametric oscillator.
abstract: We demonstrate the generation of mid-infrared radiation using a femtosecond dual-signal-wavelength optical parametric oscillator and difference frequency generation in an extracavity gallium selenide or silver gallium diselenide crystal. This system generates up to 4.3 mW of average mid-infrared power. Its spectra can be tuned to between 10.5 μm and 16.5 μm wavelength (952  cm(-1)-606  cm(-1)) with more than 50  cm(-1) spectral bandwidth. We demonstrate that the power and spectra of this system are temporally very stable.
authors.affiliation: 4th Physics Institute and Research Center SCOPE, University of Stuttgart, Stuttgart, Germany. r.hegenbarth@physik.uni-stuttgart.de
authors.forename: Robin
authors.initials: R
authors.lastname: Hegenbarth
authors.forename: Andy
authors.initials: A
authors.lastname: Steinmann
authors.forename: Sergey
authors.initials: S
authors.lastname: Sarkisov
authors.forename: Harald
authors.initials: H
authors.lastname: Giessen