摘要
Development of the wideband and tunable quasi-optic terahertz (THz) components is in high demand. In this work, we demonstrate a tunable achromatic quarter-wave plate (AQWP) for the THz frequency range. The phase retardation of this device can be set at 90° ± 9° from 0.20 to 0.50 THz. The operation range from 0.20 to 0.50 THz can be tuned to from 0.30 to 0.70 THz by introducing three nematic liquid crystals phase retarders, of which the birefringence can be magnetically tuned. The frequency-dependent phase retardation is in good agreement with theoretical predictions.
原文 | 英語 |
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頁(從 - 到) | 9933-9940 |
頁數 | 8 |
期刊 | Optics Express |
卷 | 27 |
發行號 | 7 |
DOIs | |
出版狀態 | 已發佈 - 2019 4月 1 |
ASJC Scopus subject areas
- 原子與分子物理與光學