Open AccessIodine-stabilized laser at telecom wavelength using dual-pitch periodically poled lithium niobate waveguide
Author(s) -
Kazuhiro Ikeda,
Sho Okubo,
Masato Wada,
Ken Kashiwagi,
Kazumichi Yoshii,
Hajime Inaba,
Feng–Lei Hong
Publication year - 2020
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.381961
Subject(s) - lithium niobate , laser , optics , materials science , interferometry , second harmonic generation , wavelength , waveguide , optoelectronics , physics
We demonstrate the third harmonic generation of a 1542-nm laser using a dual-pitch periodically poled lithium niobate waveguide with a conversion efficiency of 66%/W 2 . The generated 514-nm light is used for saturation spectroscopy of molecular iodine and laser frequency stabilization. The achieved laser frequency stability is 1.1×10 -12 at an average time of 1 s, which is approximately one order of magnitude better than the acetylene-stabilized laser at 1542 nm. Uncertainty evaluation and absolute frequency measurement are also performed. The developed frequency-stabilized laser can be used as a reliable frequency reference at the telecom wavelength for various applications including optical frequency combs and precision interferometric measurement.