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Proceedings Paper

The twin-stripe laser: a nonlinear term in the coupling coefficient
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Paper Abstract

Laterally coupled laser-diode pairs, also called "twin stripe lasers", are coupled by means of the evanescent em-field in between two dielectric laser cavities. The coupling strength between the two lasers is determined by the decay length of this evanescent em-field. This length depends on the indices of refraction of the material which separates the two cavities compared to the cavity material. However the index of refraction of the cavity material also depends on the inversion density in the lasing material. Therefore the coupling coefficient in the rate equation for the twin stripe device can be written as κ0[1 + ½(αc(1) ρ1 + αc(2) ρ2)], where ρ1 and ρ2 are the inversion densities in the two stripes. We give an expression for αc>(i) in terms of the properties of the device.

Paper Details

Date Published: 1 September 2004
PDF: 12 pages
Proc. SPIE 5452, Semiconductor Lasers and Laser Dynamics, (1 September 2004); doi: 10.1117/12.545302
Show Author Affiliations
Piet C. De Jagher, Vrije Univ. Amsterdam (Netherlands)
Daan Lenstra, Vrije Univ. Amsterdam (Netherlands)
Technische Univ. Eindhoven (Netherlands)

Published in SPIE Proceedings Vol. 5452:
Semiconductor Lasers and Laser Dynamics
Daan Lenstra; Geert Morthier; Thomas Erneux; Markus Pessa, Editor(s)

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