Accession Number:

ADA595078

Title:

Miniaturization and Optimization of Nanoscale Resonant Oscillators

Descriptive Note:

Final rept. 1 Jul 2007-3 Mar 2013

Corporate Author:

CALIFORNIA UNIV SAN DIEGO LA JOLLA

Report Date:

2013-09-07

Pagination or Media Count:

55.0

Abstract:

Current microscale semiconductor laser resonators may attain small modal volumes but require structures that are large compared to the wavelength, such as photonic crystals 11 or Bragg mirrors 12. Metallic coatings provide stronger confinement of light and consequently higher device-packing density and therefore have been proposed for reducing the size of semiconductor nanowire lasers 13, 14. The drawback of using metals, however, is their high dissipation losses at optical frequencies. Lasing in three-dimensional 3D subwavelength metal-coated cavities operating at cryogenic temperatures to reduce the dissipation losses in the metal and increase the gain in the semiconductor has been reported 8. We show that the losses in metal coated gain waveguides, as well as 3D laser resonators, can be significantly reduced by introducing a low index shield layer between the gain medium and the metal.

Subject Categories:

  • Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE