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Design optimization of a hyperbolic unstable-resonator semiconductor laser

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3 Author(s)
Eriksson, N. ; Dept. of Microelectron., Chalmers Univ. of Technol., Goteborg, Sweden ; Modh, P. ; Larsson, A.

A semiconductor laser with a hyperbolic unstable resonator has been investigated through numerical simulations. The laser has an integrated focusing grating outcoupler. The complete device, including the resonator, outcoupler, and free-space propagation, has been modeled. Propagation in the resonator and the outcoupler grating has been modeled using a beam-propagation method that accounts for anti-guiding and thermal effects. The work has been aimed at optimizing the resonator layout for suppressed filamentation and wavefront distortion, i.e., to design a laser that produces an injection-independent focused spot. We show that small changes in the resonator layout can have a large effect on the laser performance and characteristics of the focused spot. We conclude that thermal effects, rather than anti-guiding effects, limit the performance of the device

Published in:

Quantum Electronics, IEEE Journal of  (Volume:37 ,  Issue: 8 )

Date of Publication:

Aug 2001

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