6533b7d0fe1ef96bd1259bb1
RESEARCH PRODUCT
Asymmetric transmission of terahertz radiation through a double grating.
Marcin StolarekJerzy ŁUsakowskiRafal KotynskiD. YavorskiyTomasz SzoplikCarlos J. Zapata Rodríguezsubject
Materials sciencegenetic structuresbusiness.industryTerahertz radiationPhysics::Optics02 engineering and technologyGratingBroadband transmissionExtinction rate021001 nanoscience & nanotechnologyPolarization (waves)Diffraction efficiency01 natural sciencesAtomic and Molecular Physics and Optics010309 opticsOptics0103 physical sciencesOptoelectronics0210 nano-technologybusinessDiffraction gratingPhotonic crystaldescription
We report on experimental evidence of unidirectional transmission of terahertz waves through a pair of metallic gratings with different periods. The gratings are optimized for a broadband transmission in one direction, accompanied with a high extinction rate in the opposite direction. In contrast to previous studies, we show that the zero-order nonreciprocity cannot be achieved. Nonetheless, we confirm that the structure can be used successfully as an asymmetric filter.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-03-11 | Optics letters |