Open AccessBirefringence phase-matched direct third-harmonic generation in a ridge optical waveguide based on a KTiOPO4 single crystal
Author(s) -
Augustin Vernay,
Véronique Boutou,
Corinne Félix,
David Jegouso,
Florent Bassignot,
Mathieu Chauvet,
Benoı̂t Boulanger
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.432636
Subject(s) - optics , birefringence , materials science , second harmonic generation , phase matching , energy conversion efficiency , waveguide , phase (matter) , optoelectronics , nonlinear optics , crystal (programming language) , laser , physics , quantum mechanics , computer science , programming language
Birefringence phase-matched third-harmonic generation at 1594 nm is performed for the first time in a KTiOPO 4 single crystal micrometric ridge waveguide. The energy conversion efficiency reaches 3.4% for a pump energy as low as 2 µJ over a pulse duration of 15 ps at a repetition rate of 10 Hz. Strong agreements between theory and experiments for both phase-matching and conversion efficiency is obtained, which let us envision future triple photon generation quantum experiments.