  We present a frequency-shifted feedback (FSF) laser based on a tapered
amplifier. The laser operates as a coherent broadband source with up to 370GHz
spectral width and 2.3us coherence time. If the FSF laser is seeded by a
continuous-wave laser a frequency comb spanning the output spectrum appears in
addition to the broadband emission. The laser has an output power of 280mW and
a center wavelength of 780nm. The ease and flexibility of use of tapered
amplifiers makes our FSF laser attractive for a wide range of applications,
especially in metrology.
