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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 2 — Jan. 27, 2014
  • pp: 2126–2131

Terahertz intersubband polariton tuning by electrical gating

Markus Geiser, Mattias Beck, and Jérôme Faist  »View Author Affiliations

Optics Express, Vol. 22, Issue 2, pp. 2126-2131 (2014)

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Intersubband polaritons in the THz range are observed by coupling intersubband transitions in parabolic quantum wells to metallic microcavities. The polaritonic states are tuned in frequency by electrically modulating the electron density in the device using a gate. Tuning of 140 Ghz is observed at a lower polariton frequency of 2.5 THz in reflection measurements. Biasing the structure for electroluminescence measurements also modulates the electron density, which can lead to differential electroluminescence line shapes.

© 2014 Optical Society of America

OCIS Codes
(140.3945) Lasers and laser optics : Microcavities
(140.3948) Lasers and laser optics : Microcavity devices

ToC Category:
Terahertz Optics

Original Manuscript: November 29, 2013
Revised Manuscript: January 10, 2014
Manuscript Accepted: January 13, 2014
Published: January 24, 2014

Markus Geiser, Mattias Beck, and Jérôme Faist, "Terahertz intersubband polariton tuning by electrical gating," Opt. Express 22, 2126-2131 (2014)

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