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Proceedings Paper

Mid/far-infrared semiconductor devices exploiting plasmonic effects
Author(s): R. Colombelli; Y. Chassagneux; A. Bousseksou; V. Moreau; S. Barbieri; C. Sirtori; G. Patriarche; G. Beaudoin; I. Sagnes; H. E. Beere; D. A. Ritchie
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Paper Abstract

We show how metallic waveguides offer the opportunity of implementing interesting functionalities for semiconductor lasers within a simple technological approach. In the THz, we show that the active region thickness of quantum cascade lasers can be reduced by a factor of 2 without effects on the threshold current density and maximum operating temperature of the laser. Pulsed and continuous-wave operation - with a low threshold Jth= 71 A/cm2 - are obtained for a 5.86-μm-thick THz QC laser. The emission is peaked at λ≈115 μm and the waveguide resonator is based on a metal-metal geometry. In the mid-infrared, we demonstrate surface-plasmon distributed-feedback quantum cascade lasers with a first-order grating realised by the sole patterning the top metallic contact. The devices have a single mode emission with a side-mode suppression ratio greater than 20dB. The emission wavelength at 78K is centred at λ = 7.3 μm and has tuning rate as a function of the temperature of ≈0.4 nm/K.

Paper Details

Date Published: 26 January 2009
PDF: 7 pages
Proc. SPIE 7222, Quantum Sensing and Nanophotonic Devices VI, 722218 (26 January 2009); doi: 10.1117/12.814892
Show Author Affiliations
R. Colombelli, Institut d'Electronique Fondamentale, Univ. Paris Sud, CNRS (France)
Y. Chassagneux, Institut d'Electronique Fondamentale, Univ. Paris Sud, CNRS (France)
A. Bousseksou, Institut d'Electronique Fondamentale, Univ. Paris Sud, CNRS (France)
V. Moreau, Institut d'Electronique Fondamentale, Univ. Paris Sud, CNRS (France)
S. Barbieri, Lab. Matériaux et Phénomènes Quantiques, Univ. Paris-VII, CNRS (France)
C. Sirtori, Lab. Matériaux et Phénomènes Quantiques, Univ. Paris-VII, CNRS (France)
G. Patriarche, Lab. de Photonique et de Nanostructures, CNRS (France)
G. Beaudoin, Lab. de Photonique et de Nanostructures, CNRS (France)
I. Sagnes, Lab. de Photonique et de Nanostructures, CNRS (France)
H. E. Beere, Cavendish Lab., Univ. of Cambridge (United Kingdom)
D. A. Ritchie, Cavendish Lab., Univ. of Cambridge (United Kingdom)


Published in SPIE Proceedings Vol. 7222:
Quantum Sensing and Nanophotonic Devices VI
Manijeh Razeghi; Rengarajan Sudharsanan; Gail J. Brown, Editor(s)

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