Open AccessHigh-power 894 nm monolithic distributed-feedback laser
Author(s) -
A. Klehr,
H. Wenzel,
O. Brox,
F. Bugge,
G. Erbert,
TP Nguyen,
G. Tränkle
Publication year - 2007
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.15.011364
Subject(s) - materials science , optics , laser , lasing threshold , optoelectronics , longitudinal mode , distributed feedback laser , grating , semiconductor laser theory , diode , spectroscopy , wavelength , physics , quantum mechanics
A ridge-waveguide InGaAs/GaAsP laser, emitting up to 250 mW in a single lateral and longitudinal mode at a wavelength of 894 nm, is presented. The distributed feedback is provided by a second order grating, formed into an InGaP/GaAs/InGaP multilayer structure. Owing to the stable lasing frequency, the large side mode suppression ratio (> 40 dB) and small spectral line width (< 200 kHz) the diode laser is well suited for caesium D1 spectroscopy. This was verified by the measurement of the hyperfine structure of the D1 line.