High-power 808 nm ridge-waveguide diode lasers with very small divergence, wavelength-stabilized by an external volume Bragg grating
H. Wenzel, K. Häusler, G. Blume, J. Fricke, M. Spreemann, M. Zorn, and G. Erbert
Published in:
Opt. Lett., vol. 34, no. 11, pp. 1627-1629 (2009).
Abstract:
We present data on ridge-waveguide diode lasers having a vertical far-field divergence of only 11.5° (FWHM) owing to an appropriate waveguide design. The lasers emitted an optical power of more than 1 W into the spatial fundamental mode from a ridge width of 5 µm. The emission wavelength was stabilized to a narrow range around 808 nm by placing a volume Bragg grating in front of the outcoupling facet.
Ferdinand-Braun-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Strasse 4, 12489 Berlin, Germany
OCIS codes:
250.5960, 140.2020, 050.7330.
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