title: Demonstration of a frequency spectral compression effect through an up-conversion interferometer.
abstract: This paper reports on the experimental implementation of an interferometer featuring sum frequency generation (SFG) processes powered by a pump spectral doublet. The aim of this configuration is to allow the use of the SFG process over an enlarged spectral domain. By analyzing the converted signal, we experimentally demonstrate a frequency spectral compression effect from the infrared input signal to the visible one converted through the SFG process. Recently, such a compression effect has been numerically demonstrated by Wabnitz et al. We also verify experimentally that we fully retrieve the temporal coherence properties of the infrared input signal in the visible field. The experimental setup permits to demonstrate an experimental frequency spectral compression factor greater than 4. This study takes place in the general field of coherence analysis through second order non-linear processes.
authors.affiliation: Xlim, Département Photonique, Université de Limoges, UMR CNRS 7252, 123 Av. Albert Thomas, 87060 Limoges CEDEX, France. jean-thomas.gomes@unilim.fr
authors.forename: Jean-Thomas
authors.initials: JT
authors.lastname: Gomes
authors.forename: Ludovic
authors.initials: L
authors.lastname: Grossard
authors.forename: Damien
authors.initials: D
authors.lastname: Ceus
authors.forename: Sébastien
authors.initials: S
authors.lastname: Vergnole
authors.forename: Laurent
authors.initials: L
authors.lastname: Delage
authors.forename: François
authors.initials: F
authors.lastname: Reynaud
authors.forename: Harald
authors.initials: H
authors.lastname: Herrmann
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Sohler
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation*; D007834:Lasers; D007909:Lenses