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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 2002),
  • paper JTuC3

Emission from a Two-Dimensional Photonic Crystal: Enhanced Extraction of Light and Lasing Action

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Abstract

The effect of a two-dimensional (2D) photonic crystal (PC) on the emission properties of a quantum well (QW) is examined.1,2 Enhanced extraction of light into the vertical direction is obtained and attributed to the presence of leaky resonant states created by the coherent scattering from the periodicity of the PC. Scattering along the high-symmetry directions also provides sufficient distributed feedback for lasing to occur. The 2D PC is fabricated in the top cladding layer of an asymmetric active region that emits at λ = 980 nm with a full-width at half-maximum of approximately 60 nm at room temperature. The photoluminescence (PL) emission at 935 nm, normal to the surface, is enhanced by a factor of 100 and the spectrally integrated PI. is enhanced by a factor of 8, both when compared to a reference structure without a PC. When optically pumped above threshold, lasing occurs at a wavelength of 1005 nm. The presented analysis provides a basis for the design of high efficiency LEDs and lasers based on 2D PCs.

© 2002 Optical Society of America

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