Terahertz Second-Harmonic Generation in Extreme-Confinement Cavities
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 me...
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| Format: | Thesis |
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Massachusetts Institute of Technology
2022
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| Online Access: | https://hdl.handle.net/1721.1/139000 |
| _version_ | 1811071906903752704 |
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| author | Ateshian, Lamia |
| author2 | Englund, Dirk |
| author_facet | Englund, Dirk Ateshian, Lamia |
| author_sort | Ateshian, Lamia |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T08:57:54Z |
| format | Thesis |
| id | mit-1721.1/139000 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T08:57:54Z |
| publishDate | 2022 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/1390002022-01-15T04:03:19Z Terahertz Second-Harmonic Generation in Extreme-Confinement Cavities Ateshian, Lamia Englund, Dirk Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science 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. 2022-01-14T14:43:46Z 2022-01-14T14:43:46Z 2021-06 2021-06-24T19:13:06.866Z Thesis https://hdl.handle.net/1721.1/139000 In Copyright - Educational Use Permitted Copyright MIT http://rightsstatements.org/page/InC-EDU/1.0/ application/pdf Massachusetts Institute of Technology |
| spellingShingle | Ateshian, Lamia Terahertz Second-Harmonic Generation in Extreme-Confinement Cavities |
| title | Terahertz Second-Harmonic Generation in Extreme-Confinement Cavities |
| title_full | Terahertz Second-Harmonic Generation in Extreme-Confinement Cavities |
| title_fullStr | Terahertz Second-Harmonic Generation in Extreme-Confinement Cavities |
| title_full_unstemmed | Terahertz Second-Harmonic Generation in Extreme-Confinement Cavities |
| title_short | Terahertz Second-Harmonic Generation in Extreme-Confinement Cavities |
| title_sort | terahertz second harmonic generation in extreme confinement cavities |
| url | https://hdl.handle.net/1721.1/139000 |
| work_keys_str_mv | AT ateshianlamia terahertzsecondharmonicgenerationinextremeconfinementcavities |