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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 21 — Oct. 8, 2012
  • pp: 23053–23060

THz-driven nonlinear intersubband dynamics in quantum wells

D. Dietze, J. Darmo, and K. Unterrainer  »View Author Affiliations


Optics Express, Vol. 20, Issue 21, pp. 23053-23060 (2012)
http://dx.doi.org/10.1364/OE.20.023053


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Abstract

In this work, we demonstrate the direct observation of non-equilibrium intersubband dynamics in a modulation-doped multiple quantum well sample induced by intense terahertz pulses. The transmission spectra show a clear dependence on the incident THz field strength, which gives rise to a multitude of nonlinear optical effects that go beyond the standard textbook two-level description of light-matter interaction. Of special interest is thereby the multiple octave spanning bandwidth of the used single-cycle THz pulses, which allows the phase-locked coupling of adjacent intersubband transitions. Examples of this interaction include the efficient, coherent population transfer, the THz induced undressing of collective excitations, and the THz Stark effect.

© 2012 OSA

OCIS Codes
(190.5970) Nonlinear optics : Semiconductor nonlinear optics including MQW
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Ultrafast Optics

History
Original Manuscript: July 20, 2012
Revised Manuscript: August 20, 2012
Manuscript Accepted: August 20, 2012
Published: September 24, 2012

Citation
D. Dietze, J. Darmo, and K. Unterrainer, "THz-driven nonlinear intersubband dynamics in quantum wells," Opt. Express 20, 23053-23060 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-21-23053


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