Enhanced Gain in Photonic Crystal Amplifiers

Sara Ek (Invited author), Elizaveta Semenova (Invited author), Per Lunnemann Hansen (Invited author), Kresten Yvind (Invited author), Jesper Mørk (Invited author)

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We experimentally demonstrate enhanced gain in the slow-light regime of quantum well photonic crystal amplifiers. A strong gain enhancement is observed with the increase of the group refractive index, due to light slow-down. The slow light enhancement is shown in a amplified spontaneous emission study of a 1 QW photonic crystal amplifier. Net gain is achieved which enables laser oscillation in photonic crystal micro cavities. The ability to freely tailor the dispersion in a semiconductor optical amplifier makes it possible to raise the optical gain considerably over a certain bandwidth. These results are promising for short and efficient semiconductor optical amplifiers. This effect will also benefit other devices, such as mode locked lasers.
Original languageEnglish
Title of host publicationProceedings of International Conference on Transparent Optical Networks (ICTON)
Number of pages4
Publication date2012
ISBN (Print)9781467322287
Publication statusPublished - 2012
Event14th International Conference on Transparent Optical Networks (ICTON) - University of Warwick, Coventry, United Kingdom
Duration: 2 Jul 20125 Jul 2012


Conference14th International Conference on Transparent Optical Networks (ICTON)
LocationUniversity of Warwick
Country/TerritoryUnited Kingdom
Internet address


  • Photonic crystal
  • Semiconductor optical amplifier
  • Amplified spontaneous emission
  • Laser
  • Cavity resonators
  • Laser excitation
  • Optical waveguides
  • Slow light.


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