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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 17,
  • Issue 11,
  • pp. 2082-
  • (1999)

Room Temperature Photonic Crystal Defect Lasers at Near-Infrared Wavelengths in InGaAsP

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Abstract

Room temperature lasing from optically pumped single defects in a two-dimensional (2-D) photonic bandgap (PBG) crystal is demonstrated. The high-Q optical microcavities are formed by etching a triangular array of air holes into a half-wavelength thick multiquantum-well waveguide. Defects in the 2-D photonic crystal are used to support highly localized optical modes with volumes ranging from 2 to 3 ( /2n)3. Lithographic tuning of the air hole radius and the lattice spacing are used to match the cavity wavelength to the quantum-well gain peak, as well as to increase the cavity Q. The defect lasers were pumped with 10-30 ns pulses of 0.4 1% duty cycle. The threshold pump power was 1.5 mW (500 W absorbed).

[IEEE ]

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