A. Klehr, H. Wenzel, O. Brox, F. Bugge, G. Erbert, T-P. Nguyen, and G. Tränkle

Published in:

Opt. Express, vol. 15, no. 18, pp. 11364-11369 (2007).

Abstract:

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.

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