title: Stable coherent coupling of laser diodes by a volume Bragg grating in photothermorefractive glass.
abstract: Two separate laser diodes emitting near 980 nm were coupled by a thick volume Bragg grating recorded in a photothermorefractive glass. The coupled diodes emitted at the same wavelength with a spectral width narrowed to below the resolution of the spectrum analyzer (<30 pm). Coherent emission at a pumping level greater than five times above the threshold was observed for several months with near-unity visibility of the interference pattern.
authors.affiliation: College of Optics and Photonics/CREOL, University of Central Florida, Orlando 32816-2700, USA.
authors.forename: George B
authors.initials: GB
authors.lastname: Venus
authors.forename: Armen
authors.initials: A
authors.lastname: Sevian
authors.forename: Vadim I
authors.initials: VI
authors.lastname: Smirnov
authors.forename: Leonid B
authors.initials: LB
authors.lastname: Glebov