Applied Physics Letters
Feedback | Help | Exit
Applied Physics Letters
Search:
   
 
 
 
Next Article
Thermal-induced refractive-index planar waveguide laser
The feasibility of a thermal-induced refractive-index planar waveguide laser was demonstrated. The condition for the guided modes to be confined in the gain region was calculated. A thermal-induced re...

Electrically tunable terahertz quantum-cascade laser with a heterogeneous active region

Appl. Phys. Lett. 95, 181101 (2009); doi:10.1063/1.3253714

Published 2 November 2009

You are not logged in to this journal. Log in

Suraj P. Khanna, Mohammed Salih, Paul Dean, A. Giles Davies, and Edmund H. Linfield
School of Electronic and Electrical Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom
We demonstrate experimentally a terahertz frequency quantum-cascade laser which can be tuned electronically, in a step-wise manner from typically 3.07 to 3.40 THz, by changing the applied electric field across the device. To achieve this, the gallium growth rate was successively reduced during growth of the active region from +6% to −4% of its nominal 1  µm/h operating value. This produced a heterogeneous active region, comprising 23 sections of different lasing units stacked together. With a single-metal surface-plasmon waveguide configuration, the devices operated in pulsed mode, up to a temperature of 81 K, and gave peak powers of ~8  mW. ©2009 American Institute of Physics
History: Received 24 July 2009; accepted 2 October 2009; published 2 November 2009
Permalink: http://link.aip.org/link/?APPLAB/95/181101/1
BUY THIS ARTICLE   (US$24)
Download HTML Download Sectioned HTML Download PDF (401 kB) View Cart

KEYWORDS and PACS

Keywords
PACS
  • 42.55.Px
    Semiconductor lasers; laser diodes
  • 42.60.Fc
    Laser beam modulation, tuning, and mode locking
  • 42.79.Gn
    Optical waveguides and couplers
  • 42.60.Jf
    Laser beam characteristics
  • YEAR: 2009

PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
Publisher:
AIP is a member of CrossRef AIP

REFERENCES (20)
View in Separate Window/Tab
For access to fully linked references, you need to log in. For access to fully linked references, you need to Log in.
  1. A. G. Davies, A. D. Burnett, W. Fan, E. H. Linfield, and J. E. Cunningham, Mater. Today 11, 18 (2008).
  2. Y. C. Shen, P. C. Upadhya, E. H. Linfield, H. E. Beere, and A. G. Davies, Appl. Phys. Lett. 83, 3117 (2003).
  3. R. Köhler, A. Tredicucci, F. Beltram, H. E. Beere, E. H. Linfield, A. G. Davies, D. A. Ritchie, R. C. Iotti, and F. Rossi, Nature (London) 417, 156 (2002).
  4. J. Xu, J. M. Hensley, D. B. Fenner, R. P. Green, L. Mahler, A. Tredicucci, M. G. Allen, F. Beltram, H. E. Beere, and D. A. Ritchie, Appl. Phys. Lett. 91, 121104 (2007).
  5. C. Walther, M. Fischer, G. Scalari, R. Terazzi, N. Hoyler, and J. Faist, Appl. Phys. Lett. 91, 131122 (2007).
  6. G. Scalari, C. Walther, J. Faist, H. Beere, and D. Ritchie, Appl. Phys. Lett. 88, 141102 (2006).
  7. C. Gmachl, A. Straub, R. Colombelli, F. Capasso, D. L. Sivco, A. M. Sergent, and A. Y. Cho, IEEE J. Quantum Electron. 38, 569 (2002).
  8. C. Gmachl, D. L. Sivco, R. Colombelli, F. Capasso, and A. Y. Cho, Nature (London) 415, 883 (2002).
  9. C. Gmachl, D. L. Sivco, J. N. Baillargeon, A. L. Hutchinson, F. Capasso, and A. Y. Cho, Appl. Phys. Lett. 79, 572 (2001).
  10. A. Straub, T. S. Mosely, C. Gmachl, R. Colombelli, M. Troccoli, F. Capasso, D. L. Sivco, and A. Y. Cho, Appl. Phys. Lett. 80, 2845 (2002).
  11. J. R. Freeman, O. P. Marshall, H. E. Beere, and D. A. Ritchie, Opt. Express 16, 19830 (2008).
  12. H. E. Beere, J. C. Fowler, J. Alton, E. H. Linfield, D. A. Ritchie, R. Köhler, A. Tredicucci, G. Scalari, L. Ajili, J. Faist, and S. Barbieri, J. Cryst. Growth 278, 756 (2005).
  13. S. P. Khanna, S. Chakraborty, M. Lachab, N. M. Hinchcliffe, E. H. Linfield, and A. G. Davies, Physica E (Amsterdam) 40, 1859 (2008).
  14. J. Heinrich, R. Langhans, M. S. Vitiello, G. Scamarcio, D. Indjin, C. A. Evans, Z. Ikonic, P. Harrison, S. Hofling, and A. Forchel, Appl. Phys. Lett. 92, 141111 (2008).
  15. H. E. Beere, C. H. Worrall, S. Whelan, D. A. Ritchie, J. Alton, S. Barbieri, and C. Sirtori, J. Cryst. Growth 301, 935 (2007).
  16. H. Luo, S. R. Laframboise, Z. R. Wasilewski, G. C. Aers, H. C. Liu, and J. C. Cao, Appl. Phys. Lett. 90, 041112 (2007).
  17. G. Scalari, L. Ajili, J. Faist, H. Beere, E. Linfield, D. Ritchie, and G. Davies, Appl. Phys. Lett. 82, 3165 (2003).
  18. I. K. Han, J. W. Jeong, J. D. Song, and J. I. Lee, J. Korean Phys. Soc. 54, 1608 (2009).
  19. A. Burnett, W. Fan, P. Upadhya, J. Cunningham, H. Edwards, T. Munshi, M. Hargreaves, E. H. Linfield, and G. Davies, Proc. SPIE 6402, 64020B (2006).
  20. P. Dean, N. K. Saat, S. P. Khanna, M. Salih, A. Burnett, J. Cunningham, E. H. Linfield, and A. G. Davies, Opt. Express 17, 20631 (2009).

CITING ARTICLES
For access to citing articles, you need to log in.
For access to citing articles, you need to Log in.


Copyright © American Institute of Physics