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Optics Letters

Optics Letters


  • Vol. 29, Iss. 10 — May. 14, 2004
  • pp: 1072–1074

Sensitivity of quantum-dot semiconductor lasers to optical feedback

D. O'Brien, S. P. Hegarty, G. Huyet, and A. V. Uskov  »View Author Affiliations

Optics Letters, Vol. 29, Issue 10, pp. 1072-1074 (2004)

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The sensitivity of quantum-dot semiconductor lasers to optical feedback is analyzed with a Lang–Kobayashi approach applied to a standard quantum-dot laser model. The carriers are injected into a quantum well and are captured by, or escape from, the quantum dots through either carrier–carrier or phonon–carrier interaction. Because of Pauli blocking, the capture rate into the dots depends on the carrier occupancy level in the dots. Here we show that different carrier capture dynamics lead to a strong modification of the damping of the relaxation oscillations. Regions of increased damping display reduced sensitivity to optical feedback even for a relatively large α factor.

© 2004 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.5960) Lasers and laser optics : Semiconductor lasers
(250.0250) Optoelectronics : Optoelectronics

D. O'Brien, S. P. Hegarty, G. Huyet, and A. V. Uskov, "Sensitivity of quantum-dot semiconductor lasers to optical feedback," Opt. Lett. 29, 1072-1074 (2004)

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