Spectral beam combining of a 980 nm tapered diode laser bar.
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%.
Vijayakumar
Deepak
D
DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Roskilde, Denmark. devi@fotonik.dtu.dk
Jensen
Ole Bjarlin
OB
Ostendorf
Ralf
R
Westphalen
Thomas
T
Thestrup
Birgitte
B
D004867:Equipment Design; D019544:Equipment Failure Analysis; D054023:Lasers, Semiconductor; D055096:Optical Devices; D012031:Refractometry / Q000295:instrumentation*