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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 3 — Feb. 4, 2008
  • pp: 1523–1528

Two-photon photocurrent autocorrelation using intersubband transitions at nearly-resonant excitation

Harald Schneider, Thomas Maier, H.C. Liu, and Martin Walther  »View Author Affiliations

Optics Express, Vol. 16, Issue 3, pp. 1523-1528 (2008)

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We investigate nonlinear mid-infrared detection via two-photon transitions involving two bound subbands and one continuum resonance in an n-type multiple quantum well. By varying the excitation energy, we have tuned the two-photon transition from resonant, yielding optimum resonant enhancement with a real intermediate state, to nearly-resonant, with a virtual but resonantly enhanced intermediate state. For autocorrelation purposes, the latter configuration improves time resolution whilst partially retaining a resonant enhancement of the two-photon transition strength.

© 2008 Optical Society of America

OCIS Codes
(190.5970) Nonlinear optics : Semiconductor nonlinear optics including MQW
(300.6530) Spectroscopy : Spectroscopy, ultrafast
(040.2235) Detectors : Far infrared or terahertz

ToC Category:

Original Manuscript: January 3, 2008
Revised Manuscript: January 17, 2008
Manuscript Accepted: January 17, 2008
Published: January 22, 2008

Harald Schneider, Thomas Maier, H. C. Liu, and Martin Walther, "Two-photon photocurrent autocorrelation using intersubband transitions at nearly-resonant excitation," Opt. Express 16, 1523-1528 (2008)

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  1. H. Schneider and H. C. Liu, Quantum Well Infrared Photodetectors: Physics and Applications (Springer, 2006).
  2. C. Sirtori and R. Teissier, "Quantum Cascade Lasers: Overview of Basic Principles and State of the Art," in Intersubband Transitions in Quantum Structures, R. Paiella, ed. (McGraw-Hill, 2006), pp. 1-44.
  3. J. Faist, F. Capasso, C. Sirtori, D. L. Sivco, and A. Y. Cho, "Quantum Interference in Intersubband Transitions," in Intersubband Transitions in Quantum Wells: Physics and Device Applications II, Semicond. Semimet. 62, H. C. Liu and F. Capasso, eds. (Academic Press, 2000), pp. 101-128. [CrossRef]
  4. C. Schönbein, H. Schneider, and M. Walther, "Coherent carrier propagation in the continuum of asymmetric quantum well structures," Phys. Rev. B 60, R13993-R13996 (1999). [CrossRef]
  5. G. B. Serapiglia, E. Paspalakis, C. Sirtori, K. L. Vodopyanov, and C. C. Phillips, "Laser-Induced Quantum Coherence in a Semiconductor Quantum Well," Phys.Rev. Lett. 84, 1019-1023 (2000). [CrossRef] [PubMed]
  6. M. D. Frogley, J. F. Dynes, M. Beck, J. Faist, and C. C. Phillips, "Gain without inversion in semiconductor nanostructures," Nature Mat. 5, 175-178 (2006). [CrossRef]
  7. C. Gmachl, O. Malis, and A. Belyanin, "Optical Nonlinearities in Intersubband transitions and Quantum Cascade Lasers," in Intersubband Transitions in Quantum Structures, R. Paiella, ed. (McGraw-Hill, 2006), pp. 181-235.
  8. H. Schneider, T. Maier, H. C. Liu, M. Walther, and P. Koidl, "Ultra-sensitive femtosecond two-photon detector with resonantly enhanced nonlinear absorption," Opt. Lett. 30, 287-289 (2005). [CrossRef] [PubMed]
  9. T. Maier, H. Schneider, H. C. Liu, M. Walther, and P. Koidl, "Two-photon QWIPs for quadratic detection of weak mid-infrared pulsed lasers," Infrared Phys. Technol. 47, 182-187 (2005). [CrossRef]
  10. H. Schneider, T. Maier, M. Walther, and H. C. Liu, "Two-photon photocurrent spectroscopy of electron intersubband relaxation and dephasing in quantum wells," Appl. Phys. Lett. 91, 191116 (2007). [CrossRef]
  11. T. Elsaesser, "Ultrafast Dynamics of Intersubband Excitations in Quantum Wells and Quantum Cascade Structures," in Intersubband Transitions in Quantum Structures, R. Paiella, ed. (McGraw-Hill, 2006), pp. 181-235.
  12. H. Schneider, C. Schnbein, P. Koidl, and G. Weimann, "Influence of optical interference in quantum well infrared photodetectors with 45o facet geometry," Appl. Phys. Lett. 74, 16 (1999). [CrossRef]
  13. T. Maier, H. Schneider, M. Walther, P. Koidl, and H. C. Liu, "Resonant two-photon photoemission in quantum well infrared photodetectors," Appl. Phys. Lett 84, 5162-5164 (2004). [CrossRef]
  14. S. Ehret, H. Schneider, "Generation of subpicosecond infrared pulses tunable between 5.2 μm and 18 μm at a repetition rate of 76 MHz," Appl. Phys. B 66, 27-30 (1998). [CrossRef]
  15. H. Schneider, O. Drachenko, S. Winnerl, M. Helm, and M. Walther, "Quadratic autocorrelation of free-electron laser radiation and photocurrent saturation in two-photon quantum-well infrared photodetectors," Appl. Phys. Lett. 89, 133508 (2006). [CrossRef]
  16. R. Paiella, F. Capasso, C. Gmachl, D. L. Sivco, J. N. Baillargeon, A. L. Hutchinson, A. Y. Cho, H. C. Liu, "Self-Mode-Locking of Quantum Cascade Lasers with Ultrafast Optical Nonlinearities," Science 290, 1739-1742 (2000). [CrossRef] [PubMed]
  17. T. Hattori, Y. Kawashima, M. Daikoku, H. Inouye, and H. Nakatsuka, "Femtosecond Two-Photon Response Dynamics of Photomultiplier Tubes," Jpn. J. Appl. Phys. 39, 4793-4798 (2000). [CrossRef]

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