Optically Detected Terahertz Resonance Spectroscopy of Semiconductor Nanostructures

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" Optically Detected Terahertz Resonance Spectroscopy of Semiconductor Nanostructures "

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	150839
Doc. No	:	ET22631
Main Entry	:	Rahul Srivastava
Title Proper	:	Optically Detected Terahertz Resonance Spectroscopy of Semiconductor Nanostructures
Note	:	This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract	:	In this dissertation work we have developed an ultracompact optically-detectedterahertz resonance (ODTR) spectroscopy system, using quantum cascade lasers(QCLs). This system can be used for investigating various terahertz (TEIz) resonancesin semiconductors. We use a THz QCL. of an appropriate frequency. operating inthe close vicinity of the sample. Due to the small size of the QCLs. m-e can mountthem on the sample holder of the magnet. which allows focusing of the THz beamonto the sample with minimal loss. This precludes the need of any external sourceof radiation. We use a single fiber to send the pump laser beam to the sample andcollect the PL signal. The use of the fiber makes our system versatile enough to beused in a variety of situations. especially inside our magnet. We have used this setupto obtain some preliminary ODTR data on an InGaAs/AlGaAs multiple-quantumwell sample.....-...,..tested for theQ1 PC1 bus cardBoth these projects mere sofixare des elopment efforts tonards contributing to dlfferentaspects of Roboucs and lZ1echatronics projects m the Controls and Roboucs Group..
Subject	:	Electericl tess
	:	برق
electronic file name	:	TL45855.pdf
Title and statement of responsibility and	:	Optically Detected Terahertz Resonance Spectroscopy of Semiconductor Nanostructures [Thesis]