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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 20 — Sep. 24, 2012
  • pp: 22181–22187

Continuous-wave InAs/GaAs quantum-dot laser diodes monolithically grown on Si substrate with low threshold current densities

Andrew Lee, Qi Jiang, Mingchu Tang, Alwyn Seeds, and Huiyun Liu  »View Author Affiliations


Optics Express, Vol. 20, Issue 20, pp. 22181-22187 (2012)
http://dx.doi.org/10.1364/OE.20.022181


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Abstract

We report the first room-temperature continuous-wave operation of III-V quantum-dot laser diodes monolithically grown on a Si substrate. Long-wavelength InAs/GaAs quantum-dot structures were fabricated on Ge-on-Si substrates. Room-temperature lasing at a wavelength of 1.28 μm has been achieved with threshold current densities of 163 A/cm2 and 64.3 A/cm2 under continuous-wave and pulsed conditions for ridge-waveguide lasers with as cleaved facets, respectively. The value of 64.3 A/cm2 represents the lowest room-temperature threshold current density for any kind of laser on Si to date.

© 2012 OSA

OCIS Codes
(230.5590) Optical devices : Quantum-well, -wire and -dot devices
(250.5300) Optoelectronics : Photonic integrated circuits
(250.5960) Optoelectronics : Semiconductor lasers

ToC Category:
Optoelectronics

History
Original Manuscript: July 23, 2012
Revised Manuscript: August 28, 2012
Manuscript Accepted: August 29, 2012
Published: September 12, 2012

Citation
Andrew Lee, Qi Jiang, Mingchu Tang, Alwyn Seeds, and Huiyun Liu, "Continuous-wave InAs/GaAs quantum-dot laser diodes monolithically grown on Si substrate with low threshold current densities," Opt. Express 20, 22181-22187 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-20-22181


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