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Enhancing visibility and resolution in Nth-order intensity correlation of thermal light
The arbitrary Nth-order intensity correlation measurement with thermal light is both theoretically and experimentally investigated. In a double-slit interference scheme with thermal light, we compare ...

Room temperature terahertz quantum cascade laser source based on intracavity difference-frequency generation

Appl. Phys. Lett. 92, 201101 (2008); doi:10.1063/1.2919051

Published 19 May 2008

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Mikhail A. Belkin,1 Federico Capasso,1 Feng Xie,2 Alexey Belyanin,2 Milan Fischer,3 Andreas Wittmann,3 and Jérôme Faist3
1Harvard School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA
2Department of Physics, Texas A&M University, College Station, Texas 77843, USA
3Institute of Quantum Electronics, ETH Zürich, CH-8093 Zürich, Switzerland
We report on our progress in the development of a terahertz quantum cascade laser source based on intracavity terahertz difference-frequency mixing in a dual-wavelength mid-infrared quantum cascade laser with the active region engineered to possess giant second-order nonlinear susceptibility. In this letter, we demonstrate devices that operate in mid-infrared at lambda1=8.9  µm and lambda2=10.5  µm and produce terahertz output at lambda[approximate]60  µm via difference-frequency generation with 7  µW output power at 80  K, 1  µW output at 250  K, and still approximately 300  nW output at 300  K. ©2008 American Institute of Physics
History: Received 8 March 2008; accepted 4 April 2008; published 19 May 2008
Permalink: http://link.aip.org/link/?APPLAB/92/201101/1
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KEYWORDS and PACS

Keywords
PACS
  • 42.55.Px
    Semiconductor lasers; laser diodes
  • 42.65.An
    Nonlinear optical susceptibility, hyperpolarizability
  • YEAR: 2008

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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REFERENCES (16)
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