**Red Tunable High-Power Narrow-Spectrum External-Cavity Diode Laser Based on Tapered Amplifier**

Mingjun Chi1, Ole Bjarlin Jensen1, Götz Erbert2, Bernd Sumpf2 and Paul Michael Petersen1 *1Department of Photonics Engineering, Technical University of Denmark, 2Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, 1Denmark 2Germany* 
