High-Power Frequency Stabilized GaSb DBR Tapered Laser

The authors present distributed Bragg reflector (DBR) tapered lasers fabricated on the GaInSb-AlGaAsSb material system. These index guided tapered lasers are equipped with first-order chromium DBRs acting as frequency-selective mirrors on the rear facet. Hence, high-power wavelength stabilized lasers could be realized. The devices exhibit output powers of up to 87 mW and sidemode suppression ratios of 40 dB at an emission wavelength of 2.03 mum in continuous-wave operation.