A study of coherent nonlinear processes in dense media with continuous and pulsed laser fields

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dc.contributorWelch, George R.
dc.creatorZhang, Aihua
dc.date.accessioned2010-07-15T00:13:20Z
dc.date.accessioned2010-07-23T21:44:39Z
dc.date.accessioned2017-04-07T19:57:10Z
dc.date.available2010-07-15T00:13:20Z
dc.date.available2010-07-23T21:44:39Z
dc.date.available2017-04-07T19:57:10Z
dc.date.created2009-05
dc.date.issued2010-07-14
dc.description.abstractCoherent nonlinear effects such as Electromagnetically Induced Transparency (EIT), Coherent Population Trapping (CPT), and Slow light are studied in thermal Rb vapor by both continuous and pulsed laser fields. This work primarily includes three parts: (I) mode-locked rubidium laser and its applications (II) enhanced coupling between optical and sound waves in the forward direction via ultra-slow light (III) optical steering via ultra-slow light in rubidium vapor. In part(I), I describe the construction and study of a mode-locked rubidium laser operating at the Rb D1 line using an active mode-locking technique inside the laser cavity. The mode-locked laser field is used to observe coherent effects in a dense rubidium gas. In part(II), I experimentally demonstrate enhanced acoustic-optic coupling that occurs when the velocity of sound is close to the group velocity of light. Dragging of the light by effective motion of the gas in a Rb cell is the origin of enhanced coupling. Good agreement between theory and experiment is found. In part(III), I experimentally demonstrate optical beam deflection in coherently driven rubidium vapor due to the steep refraction index profile in the region of EIT.
dc.identifier.urihttp://hdl.handle.net/1969.1/ETD-TAMU-2009-05-657
dc.language.isoeng
dc.subjectquantum coherent effect, Electromagnetically Induced transparency, Coherent Population Trapping, Slow light, mode-locked laser system
dc.titleA study of coherent nonlinear processes in dense media with continuous and pulsed laser fields
dc.typeBook
dc.typeThesis

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