title: Fundamental eigenmode of traveling-wave phase-sensitive optical parametric amplifier: experimental generation and verification.
abstract: We investigate experimentally the eigenmodes of a Gaussian-beam-pumped traveling-wave phase-sensitive optical parametric amplifier (PSA). By varying the waist of an input LG(00) signal mode, we show that PSA performance improves with increasing spatial overlap between the input and the theoretically predicted fundamental eigenmode. For optimum waist, we report amplification and deamplification markedly higher than those observed for the traditional case of signal waist=√2× (pump waist). Lastly, we demonstrate the generation and verification of the PSA fundamental eigenmode.
authors.affiliation: Center for Photonic Communication and Computing, EECS Department, Northwestern University, Evanston, Illinois 60208, USA. amarb@umich.edu
authors.forename: Amar R
authors.initials: AR
authors.lastname: Bhagwat
authors.forename: Gideon
authors.initials: G
authors.lastname: Alon
authors.forename: Oo-Kaw
authors.initials: OK
authors.lastname: Lim
authors.forename: Chao-Hsiang
authors.initials: CH
authors.lastname: Chen
authors.forename: Muthiah
authors.initials: M
authors.lastname: Annamalai
authors.forename: Michael
authors.initials: M
authors.lastname: Vasilyev
authors.forename: Prem
authors.initials: P
authors.lastname: Kumar