Аннотация
An increase in the radiation power of terahertz (THz) sources requires the development of new optics working with it. The laser-assisted replication technique is proposed to fabricate the diamond cylindrical diffractive lens with a continuous profile for the THz range. The procedure involves the inverted structuring of a silicon substrate by laser ablation for its further replication to the diamond surface utilizing the chemical vapor deposition process. Testing of the fabricated lens performed with a free-electron laser at the wavelength of 141 µm has demonstrated high diffraction efficiency (95 ± 5%) and a good agreement between the measured and expected intensity distribution in the focal plane.
Язык оригинала | английский |
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Страницы (с-по) | 340-343 |
Число страниц | 4 |
Журнал | Optics Letters |
Том | 46 |
Номер выпуска | 2 |
DOI | |
Состояние | Опубликовано - 15 янв. 2021 |
Предметные области OECD FOS+WOS
- 1.03 ФИЗИЧЕСКИЕ НАУКИ И АСТРОНОМИЯ
- 1.03.SY ОПТИКА