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5-W DBR Tapered Lasers Emitting at 1060 nm With a Narrow Spectral Linewidth and a Nearly Diffraction-Limited Beam Quality

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9 Author(s)
K. -H. Hasler ; Ferdinand-Braun-Inst. fur Hochstfrequenztechnik, Berlin ; B. Sumpf ; P. Adamiec ; F. Bugge
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Distributed Bragg reflector tapered lasers emitting at a wavelength of about 1060 nm were realized. The expitaxial layer structure leads to a vertical far-field angle of 15deg (full-width at half-maximum). The devices with a total length of 4 mm consist of 2-mm-long ridge waveguide and tapered sections. The input currents to both sections can be independently controlled. The laser reached 5-W output power with a narrow spectral linewidth below 40 pm (95% power) and a nearly diffraction-limited beam quality.

Published in:

IEEE Photonics Technology Letters  (Volume:20 ,  Issue: 19 )