Optical precursors in rubidium vapor and their relation to superradiance /

Bibliographic Details
Main Author: Yang, Wenlong
Other Authors: Sokolov, Alexei V. (Thesis advisor)
Format: Thesis eBook
Language:English
Published: [College Station, Tex.] : [Texas A&M University], [2012]
Subjects:
Online Access:Link to OAK Trust copy

MARC

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245 1 0 |a Optical precursors in rubidium vapor and their relation to superradiance /  |c by Wenlong Yang. 
264 1 |a [College Station, Tex.] :  |b [Texas A&M University],  |c [2012] 
300 |a 1 online resource. 
336 |a text  |b txt  |2 rdacontent 
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500 |a "Major Subject: Physics" 
588 |a Description from author supplied metadata (automated record created 2012-10-22 13:24:58). 
502 |b Master of Science  |c Texas A&M University  |d 2011  |o http://hdl.handle.net/1969.1/ETD-TAMU-2011-08-9983 
504 |a Includes bibliographical references. 
516 |a Text (Thesis) 
520 3 |a Optical precursor is the sharp optical pulse front that does not show delay in absorptive media. In this thesis, optical precursor behavior in rubidium (Rb) vapor was investigated in the picoseconds regime. An amplified femtosecond laser was shaped to a 7-ps square pulse with sharp rising and trailing edges. This pulse was then sent into a hot rubidium vapor, and the center frequency of the laser pulse was absorbed. The output pulses were measured by a fast streak camera with 2-picosecond resolution. By varying the temperature of the Rb vapor, the measured pulse shapes showed the progression of formation of optical precursors. The measured pulses shapes showed good agreement with theory. On the other hand, a connection between optical precursors and femtosecond laser pumped 3-photon superradiance was investigated in this thesis. Maxwell-Bloch equations were numerically solved in two steps with commercial software Mathematica 8. A good agreement was found between simulation and experiment. It was confirmed that, at low excitation regime, superradiance generated from hot rubidium vapor, which were pumped by a femtosecond laser, can be understood as the formation of optical precursors. 
500 |a Electronic resource. 
650 4 |a Major Physics. 
653 |a rubidium vapor 
653 |a Maxwell-Bloch equations 
653 |a Optical precursors 
653 |a superradiance 
700 1 |a Sokolov, Alexei V.,  |e thesis advisor. 
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