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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 12 — Jun. 11, 2007
  • pp: 7623–7633

Reconfigurable quantum dot monolithic multi-section passive mode-locked lasers

Y.-C. Xin, Y. Li, Vassilios Kovanis, A. L. Gray, L. Zhang, and L. F. Lester  »View Author Affiliations

Optics Express, Vol. 15, Issue 12, pp. 7623-7633 (2007)

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We investigate the dynamical response of a quantum dot photonic integrated circuit formed with a combination of eleven passive and active gain cells operating when these cells are appropriately biased as a multi-section quantum dot passively mode-locked laser. When the absorber section is judiciously positioned in the laser cavity then fundamental frequency and harmonic mode-locking at repetition rates from 7.2GHz to 51GHz are recorded. These carefully engineered multi-section configurations that include a passive wave-guide section significantly lower the pulse width up to 34% from 9.7 to 6.4 picoseconds, as well increase by 49% the peak pulsed power from 150 to 224 mW, in comparison to conventional two-section configurations that are formed on the identical device under the same average power. In addition an ultra broad operation range with pulse width below ten picoseconds is obtained with the 3rd-harmonic mode-locking configuration. A record peak power of 234 mW for quantum dot mode-locked lasers operating over 40 GHz is reported for the first time.

© 2007 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(140.4050) Lasers and laser optics : Mode-locked lasers
(140.5960) Lasers and laser optics : Semiconductor lasers

ToC Category:
Lasers and Laser Optics

Original Manuscript: April 20, 2007
Revised Manuscript: May 31, 2007
Manuscript Accepted: June 2, 2007
Published: June 6, 2007

Y. C. Xin, Y. Li, Vassilios Kovanis, A. L. Gray, L. Zhang, and L. F. Lester, "Reconfigurable quantum dot monolithic multisection passive mode-locked lasers," Opt. Express 15, 7623-7633 (2007)

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