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Conferences > CLEO > 2007 > CWP > CWP7
  • Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies
  • OSA Technical Digest Series (CD) (Optica Publishing Group, 2007),
  • paper CWP7

Ultra-low threshold THz microcavity lasers with subwavelength mode volumes

Y. Chassagneux, J. Palomo, R. Colombelli, S. Barbieri, S. Dhillon, C. Sirtori, H. Beere, J. Alton, and D. Ritchie

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Abstract

We demonstrate terahertz microcavity lasers at λ=112μm with ultra-low current thresholds of 4 mA and with mode volumes of less than one-cubic-wavelength. Confinement in the longitudinal direction is obtained using almost-circular micro-disk resonators. The guiding properties of surface-plasmons are exploited to guide the mode with the metal contact. The devices lase up to 70K in pulsed mode, and up to 60K in continuous-wave.

© 2007 Optical Society of America

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