Open AccessDirect 15-GHz mode-spacing optical frequency comb with a Kerr-lens mode-locked Yb:Y_2O_3 ceramic laser
Author(s) -
Mamoru Endo,
Isao Itō,
Yohei Kobayashi
Publication year - 2015
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.23.001276
Subject(s) - optics , femtosecond , frequency comb , laser , mode locking , materials science , lens (geology) , comb generator , longitudinal mode , spectrometer , comb filter , physics , telecommunications , bandwidth (computing) , computer science
A 15-GHz mode spacing optical frequency comb based on a Kerr-lens mode-locked Yb:Y 2 O 3 ceramic laser has been developed. Individual modes were clearly resolved by a commercial spectrometer. To demonstrate the long-term operation of the optical frequency comb, a single longitudinal mode was phase-locked to a frequency-stabilized continuous wave laser and the repetition rate to a radio frequency standard. To the best of our knowledge, 15 GHz is the largest reported mode spacing (repetition rate) for both a Kerr-lens mode-locked laser and a direct femtosecond laser based-optical frequency comb.