Colloquia & Guest Speakers


Nanophotonic Devices for Information Processing and Sensing Applications

Dr. Krishna C. Balram, Nanofabrication Research Group, NIST

Wednesday, February 3, 2016
2:00 p.m.
Goergen Hall, Room 101


In the first half of the talk, I will discuss my work on the development of transverse Fabry-Perot resonators. These structures allow one to design multiple sub-wavelength detectors, each sensitive to a different resonant wavelength, in a single step fabrication process. I will discuss potential applications of silicon detectors for the development of compact multispectral imaging sensors and germanium detectors for on-chip coarse wavelength division multiplexing (WDM) applications.

In the second half of the talk, I will discuss the development of a piezo-optomechanical circuits platform in Gallium Arsenide. For applications ranging from quantum state transfer between the RF and optical domains to performing signal processing in the acoustic domain for microwave photonics, the ability to coherently link the optical, electrical and mechanical domains becomes critical. We develop such a platform in which localized and interacting 1550 nm photons and 2.4 GHz phonons are combined with photonic and phononic waveguides.


Krishna C. Balram is a CNST/UMD Postdoctoral Fellow in the Nanofabrication Research Group at the Center for Nanoscale Science and Technology, NIST. He received his Ph.D. degree in Electrical Engineering from Stanford University working.  His research interests revolve around the design, fabrication and characterization of nanophotonic devices for applications in information processing and sensing.


Location  Goergen Hall, Room 101

Refreshments will be served