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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
K.-H. Hasler, B. Sumpf, P. Adamiec, F. Bugge, J. Fricke, P. Ressel, H. Wenzel, G. Erbert, G. Tränkle
Ferdinand-Braun-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, D-12489 Berlin, Germany
Published in:
IEEE Photon. Techn. Lett., vol. 20, no. 19, pp. 1648-1650, Oct. 2008.
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Abstract:
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 15 (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.
Index Terms:
Distributed Bragg reflector (DBR) lasers, near infrared lasers, semiconductor lasers, tapered lasers.
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