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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 8 — Apr. 14, 2008
  • pp: 5596–5601

1.3 µm Quantum Dot Laser in coupled-cavity-injection-grating design with bandwidth of 20 GHz under direct modulation

F. Gerschütz, M. Fischer, J. Koeth, I. Krestnikov, A. Kovsh, C. Schilling, W. Kaiser, S. Höfling, and A. Forchel  »View Author Affiliations


Optics Express, Vol. 16, Issue 8, pp. 5596-5601 (2008)
http://dx.doi.org/10.1364/OE.16.005596


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Abstract

Using a multi section laser in coupled cavity injection grating design based on 1.3 µm InGaAs/GaAs quantum dot (QD) active region we were able to enhance the 3 dB modulation bandwidth well beyond the inherent material modulation bandwidth. The material bandwidth was determined by measurements on distributed feedback (DFB) devices to approximately 8 GHz. The special multisectional design allows interaction between the lasing mode and a second mode used as catalyst and enables a high resonance frequency of the device. Based on active QD material this approach allowed us to reach a cut off frequency of 20 GHz in the small signal response of the device.

© 2008 Optical Society of America

OCIS Codes
(140.5960) Lasers and laser optics : Semiconductor lasers
(250.5590) Optoelectronics : Quantum-well, -wire and -dot devices

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: January 15, 2008
Revised Manuscript: March 8, 2008
Manuscript Accepted: March 20, 2008
Published: April 7, 2008

Citation
F. Gerschütz, M. Fischer, J. Koeth, I. Krestnikov, A. Kovsh, C. Schilling, W. Kaiser, S. Höfling, and A. Forchel, "1.3 μm Quantum Dot Laser in coupled-cavity-injection-grating design with bandwidth of 20 GHz under direct modulation," Opt. Express 16, 5596-5601 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-8-5596


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References

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