Optical subwavelength focalizing apparatus based on the unilaterally corrugated metallic Nano-slit
محل انتشار: اولین همایش بین المللی علوم و فناوری نانو
سال انتشار: 1399
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 276
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شناسه ملی سند علمی:
ICNNA01_073
تاریخ نمایه سازی: 21 دی 1399
چکیده مقاله:
In this report, we numerically examined the possibility of application of perforated perfect metal slab containing a central Nano-slit and unilaterally symmetric grooves on the output surface as the focalizing apparatus. Results of the theoretical simulations through the Finite Difference Time-Domain method revealed that the unilaterally distributed indentations can be utilized for focusing incident plane wave at the plasmon polariton resonance condition. Therefore the presented one sided grooves structure can be used instead of bilaterally corrugated aperture proposed by F. Garcıa-Vidal et al. Furthermore, the outcomes of investigations indicated that the out of resonance incident beam diverges immediately after passing through the subwavelength slit.
کلیدواژه ها:
نویسندگان
Hossein Shahrokhabadi
Photonics and Quantum Technologies Research School, Nuclear Science and Technology Research Institute (NSTRI), Tehran, Iran
Reza Goodarzi,
Photonics and Quantum Technologies Research School, Nuclear Science and Technology Research Institute (NSTRI), Tehran, Iran
Mohamad Barzan,
Photonics and Quantum Technologies Research School, Nuclear Science and Technology Research Institute (NSTRI), Tehran, Iran
Mohamadreza A. Moghadam,
Photonics and Quantum Technologies Research School, Nuclear Science and Technology Research Institute (NSTRI), Tehran, Iran