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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 22 — Oct. 26, 2009
  • pp: 20321–20326

Electrically controllable photonic molecule laser

G. Fasching, Ch. Deutsch, A. Benz, A. M. Andrews, P. Klang, R. Zobl, W. Schrenk, G. Strasser, P. Ragulis, V. Tamošiūnas, and K. Unterrainer  »View Author Affiliations

Optics Express, Vol. 17, Issue 22, pp. 20321-20326 (2009)

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We have studied the coherent intercavity coupling of the evanescent fields of two microdisk terahertz quantum-cascade lasers. The electrically controllable optical coupling of the single-mode operating lasers has been observed for cavity spacings up to 30 µm. The strongest coupled photonic molecule with 2 µm intercavity spacing allows to conditionally switch the optical emission by the electrical modulation of only one microdisk. The lasing threshold characteristics demonstrate the linear dependence of the gain of a quantum-cascade laser on the applied electric field.

© 2009 Optical Society of America

OCIS Codes
(130.0250) Integrated optics : Optoelectronics
(260.3090) Physical optics : Infrared, far
(140.3945) Lasers and laser optics : Microcavities
(140.5965) Lasers and laser optics : Semiconductor lasers, quantum cascade

ToC Category:
Lasers and Laser Optics

Original Manuscript: September 8, 2009
Revised Manuscript: October 9, 2009
Manuscript Accepted: October 12, 2009
Published: October 23, 2009

G. Fasching, Ch. Deutsch, A. Benz, A. M. Andrews, P. Klang, R. Zobl, W. Schrenk, G. Strasser, P. Ragulis, V. Tamošiūnas, and K. Unterrainer, "Electrically controllable photonic molecule laser," Opt. Express 17, 20321-20326 (2009)

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