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Very narrow linewidth asymmetric cladding InGaAs-GaAs ridge waveguide distributed Bragg reflector lasers

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7 Author(s)
Smith, G.M. ; Microelectron. Lab., Illinois Univ., Urbana, IL, USA ; Hughes, J.S. ; Lammert, R.M. ; Osowski, M.L.
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Asymmetric cladding InGaAs-GaAs ridge waveguide distributed Bragg reflector (RW-DBR) lasers are demonstrated with a spectral linewidth as low as 39 kHz for an output power of 24 mW. The fabrication requires only a single standard epitaxial growth of a laser structure while the use of a thin top cladding layer allows for a shallow reactive ion etch of the distributed Bragg reflector. These RW-DBR lasers have a threshold current of 12.4 mA, a slope of 0.3 W/A, and over 40 dB side-mode suppression at a wavelength of 1010 nm.

Published in:

Photonics Technology Letters, IEEE  (Volume:8 ,  Issue: 4 )