Phonon Polaritons Assisted Extraordinary Transmission in α-MoO-Silver Grating and Its Application in Switching<sub/>
Sub-wavelength metal grating structures exhibit extraordinary transmission (EOT) due to constructive interference of surface plasmon polaritons (SPPs) tunneling. Phonon polaritons (PhPs) having several advantages over metal-supported plasmons, such as zero ohmic loss and larger propagation lengths,...
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9913461/ |
| _version_ | 1797804876644745216 |
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| author | Anjali Yadav Shailendra K Varshney Basudev Lahiri |
| author_facet | Anjali Yadav Shailendra K Varshney Basudev Lahiri |
| author_sort | Anjali Yadav |
| collection | DOAJ |
| description | Sub-wavelength metal grating structures exhibit extraordinary transmission (EOT) due to constructive interference of surface plasmon polaritons (SPPs) tunneling. Phonon polaritons (PhPs) having several advantages over metal-supported plasmons, such as zero ohmic loss and larger propagation lengths, can further enhance the transmission. We propose the design of silver gratings filled with anisotropic Molybdenum Trioxide (α - MoO<sub>3</sub>) to exhibit EOT by utilizing PhPs. We also numerically demonstrate the tunability (amplitude) of EOT by introducing a layer of graphene nanoribbon in the proposed device and show its application as a mid-infrared switch with bandwidth of 650 nm. α-MoO<sub>3</sub>/silver grating produces normalized transmission as high as ∼5.5 for [100] and ∼6 for [001] crystalline directions. This extraordinary effect is attributed to the formation of (i) hybrid modes, specifically cavity modes coupled with SPPs outside the reststrahlen band (RB) and (ii) cavity modes coupled with PhPs inside the RB. The reported work can be employed in diverse applications including molecular sensing, space communications, remote controlling and, imaging. |
| first_indexed | 2024-03-13T05:43:39Z |
| format | Article |
| id | doaj.art-4e6578727dd3453ea0f912d491910d69 |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-03-13T05:43:39Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-4e6578727dd3453ea0f912d491910d692023-06-13T20:37:36ZengIEEEIEEE Photonics Journal1943-06552022-01-011461810.1109/JPHOT.2022.32118859913461Phonon Polaritons Assisted Extraordinary Transmission in α-MoO-Silver Grating and Its Application in Switching<sub/>Anjali Yadav0https://orcid.org/0000-0002-4159-2001Shailendra K Varshney1https://orcid.org/0000-0002-8267-3692Basudev Lahiri2https://orcid.org/0000-0002-5700-1624Nano Bio Photonics Group, Advance Photonics Laboratory, Department of Electronics and Electrical Communication Engineering, IIT Kharagpur, Kharagpur, West Bengal, IndiaFiber Optics, Nano and Quantum Photonics Group, Advance Photonics Laboratory, Department of Electronics and Electrical Communication Engineering, IIT Kharagpur, Kharagpur, West Bengal, IndiaNano Bio Photonics Group, Advance Photonics Laboratory, Department of Electronics and Electrical Communication Engineering, IIT Kharagpur, Kharagpur, West Bengal, IndiaSub-wavelength metal grating structures exhibit extraordinary transmission (EOT) due to constructive interference of surface plasmon polaritons (SPPs) tunneling. Phonon polaritons (PhPs) having several advantages over metal-supported plasmons, such as zero ohmic loss and larger propagation lengths, can further enhance the transmission. We propose the design of silver gratings filled with anisotropic Molybdenum Trioxide (α - MoO<sub>3</sub>) to exhibit EOT by utilizing PhPs. We also numerically demonstrate the tunability (amplitude) of EOT by introducing a layer of graphene nanoribbon in the proposed device and show its application as a mid-infrared switch with bandwidth of 650 nm. α-MoO<sub>3</sub>/silver grating produces normalized transmission as high as ∼5.5 for [100] and ∼6 for [001] crystalline directions. This extraordinary effect is attributed to the formation of (i) hybrid modes, specifically cavity modes coupled with SPPs outside the reststrahlen band (RB) and (ii) cavity modes coupled with PhPs inside the RB. The reported work can be employed in diverse applications including molecular sensing, space communications, remote controlling and, imaging.https://ieeexplore.ieee.org/document/9913461/Extraordinary Transmission (EOT)α-MoO<named-content xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" content-type="math" xlink:type="simple"> <inline-formula> <tex-math notation="LaTeX">$_{3}$</tex-math> </inline-formula> </named-content>mid-IRtunable optical switchPhonon Polaritons2D materials |
| spellingShingle | Anjali Yadav Shailendra K Varshney Basudev Lahiri Phonon Polaritons Assisted Extraordinary Transmission in α-MoO-Silver Grating and Its Application in Switching<sub/> IEEE Photonics Journal Extraordinary Transmission (EOT) α-MoO<named-content xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" content-type="math" xlink:type="simple"> <inline-formula> <tex-math notation="LaTeX">$_{3}$</tex-math> </inline-formula> </named-content> mid-IR tunable optical switch Phonon Polaritons 2D materials |
| title | Phonon Polaritons Assisted Extraordinary Transmission in α-MoO-Silver Grating and Its Application in Switching<sub/> |
| title_full | Phonon Polaritons Assisted Extraordinary Transmission in α-MoO-Silver Grating and Its Application in Switching<sub/> |
| title_fullStr | Phonon Polaritons Assisted Extraordinary Transmission in α-MoO-Silver Grating and Its Application in Switching<sub/> |
| title_full_unstemmed | Phonon Polaritons Assisted Extraordinary Transmission in α-MoO-Silver Grating and Its Application in Switching<sub/> |
| title_short | Phonon Polaritons Assisted Extraordinary Transmission in α-MoO-Silver Grating and Its Application in Switching<sub/> |
| title_sort | phonon polaritons assisted extraordinary transmission in α moo silver grating and its application in switching sub |
| topic | Extraordinary Transmission (EOT) α-MoO<named-content xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" content-type="math" xlink:type="simple"> <inline-formula> <tex-math notation="LaTeX">$_{3}$</tex-math> </inline-formula> </named-content> mid-IR tunable optical switch Phonon Polaritons 2D materials |
| url | https://ieeexplore.ieee.org/document/9913461/ |
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