Terahertz and Microwave Optical Properties of Single-Crystal Quartz and Vitreous Silica and the Behavior of the Boson Peak
Z-cut single-crystal quartz and vitreous silica (silica glass or fused silica) were evaluated for use as reference materials for terahertz and microwave measurements of complex permittivity, with Z-cut quartz confirmed as being suitable. Measurements of refractive indices and absorption coefficients...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-07-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/11/15/6733 |
| _version_ | 1797525843248939008 |
|---|---|
| author | Mira Naftaly Andrew Gregory |
| author_facet | Mira Naftaly Andrew Gregory |
| author_sort | Mira Naftaly |
| collection | DOAJ |
| description | Z-cut single-crystal quartz and vitreous silica (silica glass or fused silica) were evaluated for use as reference materials for terahertz and microwave measurements of complex permittivity, with Z-cut quartz confirmed as being suitable. Measurements of refractive indices and absorption coefficients for o-ray and e-ray in quartz and for vitreous silica are reported at frequencies between 0.2 and 6 THz and at 36 and 144 GHz, and compared with data reported in the literature. A previously unreported broad band was seen in the extraordinary absorption of quartz. The Boson peak in silica glass absorption was examined, and for the first time, two negative relationships have been observed: between the refractive index and the Boson peak frequency, and between the Boson peak height and its frequency. |
| first_indexed | 2024-03-10T09:19:44Z |
| format | Article |
| id | doaj.art-56c21421a341457cb8aaa076a9a360d8 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T09:19:44Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-56c21421a341457cb8aaa076a9a360d82023-11-22T05:18:41ZengMDPI AGApplied Sciences2076-34172021-07-011115673310.3390/app11156733Terahertz and Microwave Optical Properties of Single-Crystal Quartz and Vitreous Silica and the Behavior of the Boson PeakMira Naftaly0Andrew Gregory1National Physical Laboratory, Teddington TW11 0LW, UKNational Physical Laboratory, Teddington TW11 0LW, UKZ-cut single-crystal quartz and vitreous silica (silica glass or fused silica) were evaluated for use as reference materials for terahertz and microwave measurements of complex permittivity, with Z-cut quartz confirmed as being suitable. Measurements of refractive indices and absorption coefficients for o-ray and e-ray in quartz and for vitreous silica are reported at frequencies between 0.2 and 6 THz and at 36 and 144 GHz, and compared with data reported in the literature. A previously unreported broad band was seen in the extraordinary absorption of quartz. The Boson peak in silica glass absorption was examined, and for the first time, two negative relationships have been observed: between the refractive index and the Boson peak frequency, and between the Boson peak height and its frequency.https://www.mdpi.com/2076-3417/11/15/6733single-crystal quartzsilica glasscomplex permittivityterahertzmicrowaveBoson peak |
| spellingShingle | Mira Naftaly Andrew Gregory Terahertz and Microwave Optical Properties of Single-Crystal Quartz and Vitreous Silica and the Behavior of the Boson Peak Applied Sciences single-crystal quartz silica glass complex permittivity terahertz microwave Boson peak |
| title | Terahertz and Microwave Optical Properties of Single-Crystal Quartz and Vitreous Silica and the Behavior of the Boson Peak |
| title_full | Terahertz and Microwave Optical Properties of Single-Crystal Quartz and Vitreous Silica and the Behavior of the Boson Peak |
| title_fullStr | Terahertz and Microwave Optical Properties of Single-Crystal Quartz and Vitreous Silica and the Behavior of the Boson Peak |
| title_full_unstemmed | Terahertz and Microwave Optical Properties of Single-Crystal Quartz and Vitreous Silica and the Behavior of the Boson Peak |
| title_short | Terahertz and Microwave Optical Properties of Single-Crystal Quartz and Vitreous Silica and the Behavior of the Boson Peak |
| title_sort | terahertz and microwave optical properties of single crystal quartz and vitreous silica and the behavior of the boson peak |
| topic | single-crystal quartz silica glass complex permittivity terahertz microwave Boson peak |
| url | https://www.mdpi.com/2076-3417/11/15/6733 |
| work_keys_str_mv | AT miranaftaly terahertzandmicrowaveopticalpropertiesofsinglecrystalquartzandvitreoussilicaandthebehaviorofthebosonpeak AT andrewgregory terahertzandmicrowaveopticalpropertiesofsinglecrystalquartzandvitreoussilicaandthebehaviorofthebosonpeak |