Open AccessQuasi-phase matched second harmonic generation in periodically poled Rb-doped KTiOPO4 ridge waveguide
Author(s) -
Cristine Calil Kores,
Patrick Mutter,
Hoda Kianirad,
Carlota Canalias,
Fredrik Laurell
Publication year - 2018
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.033142
Subject(s) - materials science , wafer dicing , optics , waveguide , sapphire , second harmonic generation , optoelectronics , laser , crystal (programming language) , quasi phase matching , nonlinear optics , doping , zblan , fiber laser , wavelength , wafer , physics , computer science , programming language
A 10.8 µm wide ridge waveguide was fabricated by diamond-blade dicing in an ion-exchanged periodically poled Rb-doped KTiOPO 4 sample. The waveguide was used to generate blue second harmonic light at 468.8 nm in the TM 00 mode through first order Type I quasi-phase matching, exploiting the large d 33 coefficient of the crystal. It was evaluated using a cw Ti:Sapphire laser, and 6.7 µW of blue light was generated with 5.8 mW of fundamental radiation at 933.8 nm coupled through the waveguide. The results presented here pave the way for efficient nonlinear processes in a waveguide format.