Vijayakumar Deepak, Jensen Ole Bjarlin, Ostendorf Ralf, Westphalen Thomas, Thestrup Birgitte
DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Roskilde, Denmark.
Opt Express. 2010 Jan 18;18(2):893-8. doi: 10.1364/OE.18.000893.
We demonstrate spectral beam combining of a 980 nm tapered diode laser bar. The combined beam from 12 tapered emitters on the bar yielded an output power of 9.3 W at 30 A of operating current. An M2 value of 5.3 has been achieved along the slow axis. This value is close to that of a free running single tapered emitter on the bar at the same current level. The overall spectral beam combining efficiency was measured to be 63%.
