title: Three-dimensional direct femtosecond laser writing of second-order nonlinearities in glass.
abstract: We demonstrate that direct femtosecond laser writing in silver-containing zinc and gallium phosphate glass enables generation of three-dimensional (3D) optical second-order nonlinear microstructures having an χ(2) value about 2.5 times that of quartz. The proposed physical model involves photo-reduction, photo-dissociation, and migration of silver species within the glass matrix. 3D laser-written second-order nonlinear structures could become a new class of nonlinear optical components.
authors.affiliation: Townes Laser Institute, CREOL, University of Central Florida, Orlando, Florida 32816-2700, USA.
authors.forename: Jiyeon
authors.initials: J
authors.lastname: Choi
authors.forename: Matthieu
authors.initials: M
authors.lastname: Bellec
authors.forename: Arnaud
authors.initials: A
authors.lastname: Royon
authors.forename: Kevin
authors.initials: K
authors.lastname: Bourhis
authors.forename: Gautier
authors.initials: G
authors.lastname: Papon
authors.forename: Thierry
authors.initials: T
authors.lastname: Cardinal
authors.forename: Lionel
authors.initials: L
authors.lastname: Canioni
authors.forename: Martin
authors.initials: M
authors.lastname: Richardson