Towards terahertz dual-comb spectroscopy based on quantum cascade lasers
Name
941155977-MIT.pdf
Description
Full printable version
Size
15.37 MB
Format
Adobe PDF
Checksum (MD5)
c1d9d47de0c387111e44a7e53c24c64b
Author(s)
Yang, Yang, Ph. D. Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Advisor(s)
Qing Hu.
Date Issued
2015
Publisher
Massachusetts Institute of Technology
Abstract
In this thesis, terahertz (THz) laser frequency combs are improved and THz dual-comb spectroscopy method is demonstrated. To achieve better performance of THz quantum cascade laser (QCL) frequency combs, several broadband homogeneous and heterogeneous gain media are characterized, and corresponding dispersion compensators are designed. All THz QCL frequency combs are fabricated in Microsystems Technology Laboratories at MIT using our group's standard process. By utilizing the broad spectral coverage of THz QCL frequency combs and the multiheterodyne detection method, a prototype of the THz dual-comb spectrometer is demonstrated. This thesis work provides an important step towards realizing laser-based broadband THz spectroscopy system for chemical identification and explosive detection.
Description
Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2015.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 97-99).
Subjects
Electrical Engineering and Computer Science.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Terms of Use
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