Events Calendar

Electrophysics Seminar

Speaker: Dr. Mercedeh Khajavikhan, University of California, San Diego

Talk Title: Thresholdless Nanoscale Coaxial Lasers

Abstract: Metal coated nanolasers have been a subject of growing interest, owing to both the altered laser physics at small volumes and the promise in future photonic circuit technology. The metal at optical frequencies provides strong confinement of the optical field, but at the same time present a challenge by introducing high dissipation losses, which potentially results in prohibitively high threshold for lasing.
In this talk, I present our recent experimental findings about lasing in nanoscale sub-wavelength metallic coaxial cavities, which include room-temperature continuous wave laser action in the smallest cavities to date at telecom wavelengths. Furthermore, by utilizing the unique properties of the coaxial cavities, which may have a single non-degenerate mode, we demonstrate thresholdless lasing at cryogenic temperatures, thus providing a scalable solution to overcoming the metal losses.


Biography: Mercedeh Khajavikhan received B.S. and M.S. in Electronics from Amirkabir University of Technology, Tehran, Iran, in 2000 and 2003, respectively, and Ph.D. in Electrical Engineering from University of Minnesota in 2009. Her Ph.D. dissertation was on coherent laser beam combining for high power laser applications. In 2009, she joined University of California, San Diego as a post-doctorate researcher. Her research interests have also shifted to nanooptics, plasmonics, and silicon photonics.

Host: Ming Hsieh Institute

More Info: http://ee.usc.edu/news/seminars/eep

Location: Charles Lee Powell Hall (PHE) - 333

Audiences: Everyone Is Invited

Contact: Marilyn Poplawski

Event Link: http://ee.usc.edu/news/seminars/eep