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Five-hundred-milliwatts distributed-feedback diode laser emitting at 940 nm
Authors:A. Klehr   H. Wenzel   M. Braun   F. Bugge   J. Fricke   A. Knauer  G. Erbert
Affiliation:aFerdinand-Braun-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, 12489 Berlin, Germany
Abstract:A DFB laser emitting at a wavelength around 940 nm in a single longitudinal mode up to an output power of 500 mW with a side mode suppression ratio greater than 50 dB is presented. More than 4 nm tuning range was reached by varying the current between 100 and 800 mA. Up to a power of about 300 mW, the lateral far field revealed stable fundamental mode operation.
Keywords:Semiconductor lasers   Distributed-feedback lasers   High-power lasers
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