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Compact hybrid master oscillator power amplifier with 3.1-W CW output power at wavelengths around 1061 nm

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4 Author(s)
Schwertfeger, S. ; Ferdinand-Braun-Inst. fur Hochstfrequenztechnik, Berlin, Germany ; Klehr, A. ; Erbert, G. ; Trankle, G.

A hybrid master oscillator power amplifier (MOPA) laser source has been realized by coupling a single-mode three-section distributed Bragg reflector (DBR) laser as master oscillator and a tapered power amplifier with a single lens only. A maximum continuous-wave optical output power of 3.1 W was achieved. The emission spectrum was completely determined by the DBR laser. Single longitudinal mode operation at a wavelength of λ=1061 nm was maintained over the whole power range. Up to an output power of 1.8 W, the beam propagation factor M2was less than 1.6.

Published in:

Photonics Technology Letters, IEEE  (Volume:16 ,  Issue: 5 )