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

Piet C. De Jagher; Daan Lenstra

doi:10.1117/12.545302

1 September 2004 The twin-stripe laser: a nonlinear term in the coupling coefficient

Piet C. De Jagher, Daan Lenstra

Proceedings Volume 5452, Semiconductor Lasers and Laser Dynamics; (2004) https://doi.org/10.1117/12.545302
Event: Photonics Europe, 2004, Strasbourg, France

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(α_c₍₁₎ ρ₁ + α_c₍₂₎ ρ₂)], where ρ₁ and ρ₂ are the inversion densities in the two stripes. We give an expression for α_c>(i) in terms of the properties of the device.

Citation Download Citation

Piet C. De Jagher and Daan Lenstra "The twin-stripe laser: a nonlinear term in the coupling coefficient", Proc. SPIE 5452, Semiconductor Lasers and Laser Dynamics, (1 September 2004); https://doi.org/10.1117/12.545302

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