title: High quality buried waveguides in stoichiometric LiTaO3 for nonlinear frequency conversion.
abstract: High-quality buried optical-waveguides were fabricated by reverse-proton-exchange in periodically-poled stoichiometric lithium tantalate. Experimental results show excellent fiber-mode matching, losses below 0.3 dB/cm and almost non-critical conditions for a quasi-phase-matched second-harmonic generation process from telecom wavelengths. The interaction length of 2.5 cm is the highest so far reported for lithium tantalate waveguides.
authors.forename: M
authors.initials: M
authors.lastname: Marangoni
authors.forename: M
authors.initials: M
authors.lastname: Lobino
authors.forename: R
authors.initials: R
authors.lastname: Ramponi
authors.forename: E
authors.initials: E
authors.lastname: Cianci
authors.forename: V
authors.initials: V
authors.lastname: Foglietti