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OSA Student Chapter Meeting

SPEAKER: Sean Blakley
TITLE: Nitrogen Vacancy Diamonds:Applications and Spectroscopic Analysis
Nitrogen-vacancy diamonds have a broad range of applications in the areas of quantum computing and weak magnetic field sensing. An over view of the basic theory describing the nitrogen - vacancy color center s in diamond will be presented. Diamond fabrication techniques, applications, and a spectroscopic analysis performed on both bulk diamond and nanodiamonds will also be presented.

SPEAKER: Peter Zhokhov
TITLE: Trapping light by mimicking gravitational lensing
One of the most fascinating predictions of the theory of general relativity is the effect of gravitational lensing, the bending of light in close proximity to massive stellar objects. Recently, artificial optical materials have been proposed to study the various aspects of curved spacetimes, including light trapping and Hawking radiation. However, the development of experimental 'toy' models that simulate gravitational lensing in curved spacetimes remains a challenge, especially for visible light. Here, by utilizing a microstructured optical waveguide around a microsphere, to mimic curved spacetimes caused by gravity is proposed. Both far-field gravitational lensing effects and the critical phenomenon in close proximity to the photon sphere of astrophysical objects under hydrostatic equilibrium is demonstrated experimentally. The proposed microstructured waveguide can be used as an omnidirectional absorber,with potential light harvesting and microcavity applications.

Friday, February 07, 2014
IQSE 578, 11:30 noon
Mitchell Physics Building

Department of Physics and Astronomy
Institute for Quantum Science and Engineering
Texas A&M University

(Pizza lunch as usual. Newcomers welcome!)

Host: Ellie Figueroa