title: High visibility pump reconstruction via ultra broadband sum frequency mixing of intense phase-conjugated twin beams.
abstract: In this paper we show how after the generation of parametric down-conversion radiation (PDC) in the very high gain pulsed regime, we are able to reconstruct the pump via up-conversion of the twin beams originated from that PDC process. The peculiarity of the experiment is the ultra-broad spectral and angular bandwidth sent into the process of sum frequency mixing thanks to an achromatic imaging technique from the exit face of the PDC crystal using off-axis parabolic mirrors. The recorded spectra presented illustrate the high visibility recombination of the intense phase-conjugated signal and idler beams and pave the way for the investigation of both the spatial and temporal properties of the near field biphoton amplitude.
authors: CNISM and Dipartimento di Fisica e Matematica, Università dell’Insubria, Como, Italy. ottavia.jedrkiewicz@uninsubria.it
authors: Ottavia
authors: O
authors: Jedrkiewicz
authors: Jean-Luc
authors: JL
authors: Blanchet
authors: Alessandra
authors: A
authors: Gatti
authors: Enrico
authors: E
authors: Brambilla
authors: Paolo
authors: P
authors: Di Trapani
mesh_terms: D000669:Amplifiers, Electronic; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007909:Lenses; D055096:Optical Devices; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity