Lambda shifted photonic crystal cavity laser

Martin Schubert, Troels Suhr Skovgård, Sara Ek, Elizaveta Semenova, Jørn Märcher Hvam, Kresten Yvind

Research output: Contribution to journalJournal articleResearchpeer-review


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 =1.15 with InGaAsP quantum wells =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.
Original languageEnglish
JournalApplied Physics Letters
Issue number19
Pages (from-to)191109
Publication statusPublished - 2010


  • III-V semiconductors
  • laser modes
  • semiconductor quantum wells
  • gallium arsenide
  • laser cavity resonators
  • gallium compounds
  • finite difference time-domain analysis
  • quantum well lasers
  • photonic crystals
  • indium compounds


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