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Improved Temperature Performance of 1.31-mu/m Quantum Dot Lasers by Optimized Ridge Waveguide Design\ud

By S.K. Ray, K.M. Groom, R.A. Hogg, H.Y. Liu, M. Hopkinson, T. Badcock, D.J. Mowbray and M.S. Skolnick

Abstract

In this letter, we demonstrate the importance of the fabricated device structure for the external differential efficiency, threshold current density, and maximum operating temperature for ground state operation of a 1.31-mu/m quantum dot laser. The introduction of a shallow ridge etch design and selective electroplating of the gold bondpads is demonstrated to offer improved performance in comparison to a deep ridge etch design with thinner evaporated gold bondpads

Year: 2005
OAI identifier: oai:eprints.whiterose.ac.uk:816

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