2026-09-22T12:45:14Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/50494 2023-07-11 col_2142_5131 col_2142_14787 com_2142_5130 com_2142_9630 com_2142_234

Copyright 2014 Jun Hwan Kim Brillouin scattering induced transparency nonlinear optics Brillouin scattering induced transparency and generation of slow and fast light Bahl, Gaurav Kim, Jun Hwan 2014-09-16T17:18:01Z 2014-09-16T17:18:01Z 2016-09-22T20:59:19Z 2014-08 2014-09-16 2014-08 Electromagnetically induced transparency (EIT) is generation of a narrow window in which electromagnetic field absorption is inhibited. Experimentally, a probe tuned to a certain absorption wavelength is allowed to transmit through a gaseous vapor only in the presence of a second control laser. In other words, a probe is forbidden to cause an excitation from one energy level to another through coherent coupling with a third, intermediate energy level that creates an interference pathway. In this study, Brillouin scattering analogue of EIT is demonstrated using the two optical modes that are coupled through a phase matched acoustic mode. The coherent coupling of two energy levels is emulated by the acousto-optic interaction of Brillouin scattering. The probe phase response is analyzed to estimate BSIT's effect on the velocity of light pulse. As BSIT modifies the dispersion of light, it is understood as either slowing or advancing light propagation depending on the sign of the slope of the probe phase response. Lastly, the non-reciprocity of Brillouin scattering is theoretically considered. The non-reciprocity, or a break in time reversal symmetry, is a unique property of Brillouin scattering process due to the traveling surface acoustic wave which is used for phase matching the optical modes. Therefore, BSIT can be used for applications such as optical isolation while no other transparency systems can. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2014-07-24T19:24:18Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 2 mastersthesis_v3.2.tex: 70527 bytes, checksum: 7525e36e1b61e1d405ea262ead48c7fb (MD5) mastersthesis_v3.2.pdf: 1476392 bytes, checksum: 9b1433acf22999e287312b92a82e60a1 (MD5) Made available in DSpace on 2014-09-16T17:18:01Z (GMT). No. of bitstreams: 4 Jun Hwan_Kim.pdf: 1476410 bytes, checksum: e53ac8a24249ad7124513d1b297c4bea (MD5) mastersthesis_v3.2.tex: 70546 bytes, checksum: 8e4d89d30bf78bbb19e362ad1d3705e0 (MD5) 1_mastersthesis_v3.2.tex: 70546 bytes, checksum: 8e4d89d30bf78bbb19e362ad1d3705e0 (MD5) license.txt: 4060 bytes, checksum: 3ac84127c12818f9fc8a7b0ad9a556a1 (MD5) Embargo set by: Seth Robbins for item 50605 Lift date: 2016-09-16T17:18:17Z Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system U of I Only Restriction Lifted for Item 50605 on 2016-09-22T20:59:19Z. http://hdl.handle.net/2142/50494 en text Mechanical Sci & Engineering 1917 Mechanical Engineering 0133 University of Illinois at Urbana-Champaign Thesis M.S. MS:Mechanical Enginerng -UIUC 10KS0133MS