Miniaturization and Optimization of Nanoscale Resonant Oscillators
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 07, 2013
- Accession Number
- ADA595078
Entities
People
- B. Slutsky
- Chaoran Tu
- M. Nezhad
- Vitaliy Lomakin
- Y. Fainman
Organizations
- University of California, San Diego