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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 25 — Dec. 10, 2007
  • pp: 16292–16301

Observation of Q-switching and mode-locking in two-section InAs/InP (100) quantum dot lasers around 1.55 µm

Martijn J.R. Heck, Erwin A.J.M. Bente, Barry Smalbrugge, Yok-Siang Oei, Meint K. Smit, Sanguan Anantathanasarn, and Richard Nötzel  »View Author Affiliations


Optics Express, Vol. 15, Issue 25, pp. 16292-16301 (2007)
http://dx.doi.org/10.1364/OE.15.016292


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Abstract

First observation of passive mode-locking in two-section quantum-dot lasers operating at wavelengths around 1.55 µm is reported. Pulse generation at 4.6 GHz from a 9 mm long device is verified by background-free autocorrelation, RF-spectra and real-time oscilloscope traces. The output pulses are stretched in time and heavily up-chirped with a value of 20 ps/nm, contrary to what is normally observed in passively mode-locked semiconductor lasers. The complete output spectrum is shown to be coherent over 10 nm. From a 7 mm long device Q-switching is observed over a large operating regime. The lasers have been realized using a fabrication technology that is compatible with further photonic integration. This makes the laser a promising candidate for e.g. a mode-comb generator in a complex photonic chip.

© 2007 Optical Society of America

OCIS Codes
(130.0250) Integrated optics : Optoelectronics
(140.3540) Lasers and laser optics : Lasers, Q-switched
(140.4050) Lasers and laser optics : Mode-locked lasers
(140.5960) Lasers and laser optics : Semiconductor lasers
(250.5590) Optoelectronics : Quantum-well, -wire and -dot devices

ToC Category:
Optoelectronics

History
Original Manuscript: August 29, 2007
Revised Manuscript: October 22, 2007
Manuscript Accepted: October 22, 2007
Published: November 26, 2007

Citation
Martijn J. R. Heck, Erwin A. J. M. Bente, Barry Smalbrugge, Yok-Siang Oei, Meint K. Smit, Sanguan Anantathanasarn, and Richard Nötzel, "Observation of Q-switching and mode-locking in two-section InAs/InP (100) quantum dot lasers around 1.55 μm," Opt. Express 15, 16292-16301 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-25-16292


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References

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