Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Gain saturation and high-power pulsed operation of GaSb-based tapered diode lasers with separately contacted ridge and tapered section

Gewinnsättigung und Pulsbetrieb hoher Leistung von GaSb basierenden trapezförmigen Diodenlasern mit separat kontaktierten Ridge- und Trapezbereichen
: Pfahler, C.; Eichhorn, M.; Kelemen, M.T.; Kaufel, G.; Mikulla, M.; Schmitz, J.; Wagner, J.


Applied Physics Letters 89 (2006), Nr.2, Art. 021107, 3 S.
ISSN: 0003-6951
ISSN: 1077-3118
Fraunhofer IAF ()
GaSb; high-power diode laser; Hochleistungslaser; tapered laser; Trapezlaser; ridge laser; Ridgelaser; beam quality; Strahlqualität

(AlGaIn)(AsSb) ridge-waveguide tapered diode lasers with separately contacted ridge and tapered sections, emitting at 1.93 µm, have been analyzed in pulsed mode with respect to their high-power capability and wavelength tunability. Operating the ridge section above saturation, a variation of the current through this section resulted in a change in lasing wavelength, while changing the current injected into the tapered section at a constant ridge current allowed to vary the output power at constant lasing wavelength. Furthermore, the optical power required to saturate the tapered amplifier section has been derived from a comparison of the experimental characteristics with beam propagation method calculations.