Open AccessGrating optimization and experiment on high-power distributed feedback lasers
Author(s) -
Shenghui Fu,
Guofeng Song,
Lianghui Chen
Publication year - 2007
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.56.1613
Subject(s) - grating , coupling coefficient of resonators , coupling (piping) , laser , power (physics) , optics , facet (psychology) , materials science , semiconductor laser theory , physics , quantum mechanics , psychology , social psychology , personality , resonator , metallurgy , big five personality traits
Coupling coefficient is an important parameter for distributed feedback lasers. Modified coupled-wave equations are used to calculate the effect of grating shape on coupling coefficient of the second-order gratings. Corresponding devices demonstrate that the maximum kink-free power per facet reaches 50 mW and the sidemode suppression ratio is 36 dB.