2026-09-19T12:59:51Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/1390002022-01-15T04:03:19Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
Englund, Dirk
Ateshian, Lamia
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
2022-01-14T14:43:46Z
2022-01-14T14:43:46Z
2021-06
2021-06-24T19:13:06.866Z
https://hdl.handle.net/1721.1/139000
It remains a standing challenge to produce high-power electromagnetic sources operating in the spectral range of 0.1-10 THz (the “terahertz gap"), a frequency band for applications ranging from spectroscopy to security and high-speed wireless communications. In this thesis, we will analyze a method to produce coherent radiation spanning the THz gap by second-harmonic generation (SHG) in low-loss dielectric structures, starting from the ∼100 GHz range. For this purpose, we present hybrid THz-band dielectric cavity designs that combine (1) nonlinear materials enhanced by phonon resonances with (2) extreme field concentration in high-quality-factor resonators. An efficient device for THz SHG would enable cascaded parametric frequency converters extensible into the mid-IR spectrum and beyond.
S.M.
Massachusetts Institute of Technology
In Copyright - Educational Use Permitted
Copyright MIT
http://rightsstatements.org/page/InC-EDU/1.0/
Terahertz Second-Harmonic Generation in Extreme-Confinement Cavities
Thesis
application/pdf
Master
Master of Science in Electrical Engineering and Computer Science
Publication
unknown
unknown
<Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="1e4bd03a-9562-4028-9e40-f0941701fea9">
<Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type>
<Title>Terahertz Second-Harmonic Generation in Extreme-Confinement Cavities</Title>
<PublishedIn>
<Publication>
</Publication>
</PublishedIn>
<PublicationDate>2021-06</PublicationDate>
<Authors>
<Author>
<DisplayName>Ateshian, Lamia</DisplayName>
<Affiliation>
<OrgUnit>
</OrgUnit>
</Affiliation>
</Author>
</Authors>
<Editors>
</Editors>
<Publishers>
<Publisher>
<DisplayName>Massachusetts Institute of Technology</DisplayName>
<OrgUnit />
</Publisher>
</Publishers>
<License>http://rightsstatements.org/page/InC-EDU/1.0/</License>
<Abstract>It remains a standing challenge to produce high-power electromagnetic sources operating in the spectral range of 0.1-10 THz (the “terahertz gap"), a frequency band for applications ranging from spectroscopy to security and high-speed wireless communications. In this thesis, we will analyze a method to produce coherent radiation spanning the THz gap by second-harmonic generation (SHG) in low-loss dielectric structures, starting from the ∼100 GHz range. For this purpose, we present hybrid THz-band dielectric cavity designs that combine (1) nonlinear materials enhanced by phonon resonances with (2) extreme field concentration in high-quality-factor resonators. An efficient device for THz SHG would enable cascaded parametric frequency converters extensible into the mid-IR spectrum and beyond.</Abstract>
<Access xmlns="http://purl.org/coar/access_right"
>
</Access>
</Publication>