Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


osu1164654528.pdf (2.37 MB)

ETD Abstract Container

Abstract Header

Classical and quantum dynamics of atomic systems in the proximity of dielectric waveguides

Modoran, Andrei V.
http://rave.ohiolink.edu/etdc/view?acc_num=osu1164654528

Abstract Details

2006, Doctor of Philosophy, Ohio State University, Physics.
This thesis studies the interaction between atomic systems and the evanescent fields of guided modes of planar waveguide. Based on the quantum description of the electromagnetic field in the presence of waveguides, we derive expressions for the spontaneous emission rates. We show that the total spontaneous emission rate is increased by a factor of 2 in the immediate proximity of the waveguide. We find that the probability that an atom radiates into a guided mode could be 50% for an atom near the waveguide. For the special case of symmetric waveguides, we show that the probability to decay into a guided mode near cutoff can be as much as 10% at one micron from the surface. We calculate the absorption and the phase shifts experienced by a guided mode if resonant atomic systems are placed above the waveguide. Using symmetric waveguides is shown to increase the signals by an order of magnitude. The change in lifetime near the waveguide is found to lead to an increase in the FWHM for the absorption line on the order of 10 MHz. We also describe the fabrication of Arsenic Tri-Sulfide waveguides using thermal evaporation and the fabrication of diffraction gratings used for guided mode input / output coupling. The waveguides are characterized by measuring the propagation losses for each of the eight modes. We compare our measurements with reports from the literature. We find that our relative simple fabrication procedure leads to losses as good as or better than those obtained using more complicated techniques.
Gregory Lafyatis (Advisor)
Frank De Lucia (Other)
David Stroud (Other)
Thomas Lemberger (Other)
David Goss (Other)
dielectric waveguides; atomic physics

Recommended Citations

Citations

  • Modoran, A. V. (2006). Classical and quantum dynamics of atomic systems in the proximity of dielectric waveguides [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1164654528

    APA Style (7th edition)

  • Modoran, Andrei. Classical and quantum dynamics of atomic systems in the proximity of dielectric waveguides. 2006. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1164654528.

    MLA Style (8th edition)

  • Modoran, Andrei. "Classical and quantum dynamics of atomic systems in the proximity of dielectric waveguides." Doctoral dissertation, Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1164654528

    Chicago Manual of Style (17th edition)

osu1164654528
816
© 2006, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.