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Lambda shifted photonic crystal cavity laser

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6 Author(s)
Schubert, Martin ; DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Ørsteds Plads Bldg. 343, 2800 Lyngby, Denmark ; Suhr, Troels ; Ek, Sara ; Semenova, Elizaveta S.
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We propose and demonstrate an alternative type of photonic crystal laser design that shifts all the holes in the lattice by a fixed fraction of the targeted emission wavelength. The structures are realized in InGaAsP (λ=1.15) with InGaAsP quantum wells (λ=1.52) as gain material. Cavities with shifts of 1/4 and 3/4 of the emission wavelength were fabricated and characterized. Measurements show threshold behavior for several modes at room temperature. Both structures are simulated using a finite difference time domain method to identify the resonances in the spectra and calculate the mode volume of the dominant mode.

Published in:

Applied Physics Letters  (Volume:97 ,  Issue: 19 )

Date of Publication:

Nov 2010

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