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IQSE AMO/QO Physics Seminar


"Generation of coherent light by atomic media"


Dr. Anatoly Svidzinsky
Texas A&M University

ABSTRACT 

Development of new coherent sources of radiation is important because of their broad application in spectroscopy, microscopy, medicine, materials research and lithography. First I will discuss possibility of generation of high frequency coherent radiation using QASER mechanism and progress made in this direction. QASER phenomenon is based on the collective parametric resonance which yields light amplification by periodic modulation of the coupling between light and atoms. In particular, such modulation can be produced by Rabi oscillations of atomic population. During the talk, Dr. Yi will present recent experimental observation of Rabi oscillations produced by long adiabatic pulses due to initial atomic coherence [1,2].

In the second part of the talk, I will discuss possibility of light generation by motion of a medium through an optical resonator [3]. Light amplification mechanism in this system is analogous to generation of sound waves when gas flows along a tube with acoustically closed-open boundaries. Energy for light generation is supplied from the kinetic energy of the moving medium. High optical gain can be achieved if at the generated frequency the medium refractive index is close to zero or medium has very strong frequency dispersion.

[1] A. A. Svidzinsky, H. Eleuch and M. O. Scully, Optics Letters 42, 65 (2017).
[2] Z. Yi, X. Zhao, Z. Wang, T. Peng, A. A. Svidzinsky, H. Eleuch, M. O. Scully, preprint (2017).
[3] A. A. Svidzinsky, F. Li and X. Zhang, Phys. Rev. Lett. 118, 123902 (2017).



Tuesday, January 30, 2018
IQSE Seminar Room, 12:00 Noon
(578 MPHY)


Institute for Quantum Science and Engineering
Texas A&M University

Lunch (sandwich) will be served 15 minutes prior to start time