Coupled surface plasmon–phonon polariton nanocavity arrays for enhanced mid-infrared absorption
Resonant optical cavities are essential components in mid-infrared applications. However, typical film-type cavities require multilayer stacks with a micron-thick spacer due to mid-infrared wavelengths, and their performance is limited by narrow frequency tunability and angular sensitivity. We propo...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2022-09-01
|
| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2022-0339 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846157418493378560 |
|---|---|
| author | Kachiraju Satya R. Nekrashevich Ivan Ahmad Imtiaz Farooq Hira Chang Long Kim Sangsik Kim Myoung-Hwan |
| author_facet | Kachiraju Satya R. Nekrashevich Ivan Ahmad Imtiaz Farooq Hira Chang Long Kim Sangsik Kim Myoung-Hwan |
| author_sort | Kachiraju Satya R. |
| collection | DOAJ |
| description | Resonant optical cavities are essential components in mid-infrared applications. However, typical film-type cavities require multilayer stacks with a micron-thick spacer due to mid-infrared wavelengths, and their performance is limited by narrow frequency tunability and angular sensitivity. We propose and experimentally demonstrate the subwavelength-scale (≈λ0/150) resonant nanocavity arrays that enhance the absorption spectrum of the device in the mid-infrared (10–12 microns) via excitation of coupled surface plasmon–phonon polaritons. The proposed metal–insulator–polar dielectric (gold–silicon–silicon carbide) structure supports a guided mode of the coupled surface polaritons in the lateral direction while vertically confining the mid-infrared wave within the 80 nm thick dielectric spacer. In particular, the subwavelength-scale (≈λ0/10) gratings are imposed to form Fabry–Pérot cavity arrays displaying angle-insensitive and frequency-tunable absorption of up to 80% of the optical power in the mid-infrared. Our work should benefit diverse mid-infrared applications and novel designs of polariton-based photonic devices. |
| format | Article |
| id | doaj-art-e232c4f3e67e44049b146abf436c6c49 |
| institution | Kabale University |
| issn | 2192-8614 |
| language | English |
| publishDate | 2022-09-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-e232c4f3e67e44049b146abf436c6c492024-11-25T11:19:08ZengDe GruyterNanophotonics2192-86142022-09-0111204489449810.1515/nanoph-2022-0339Coupled surface plasmon–phonon polariton nanocavity arrays for enhanced mid-infrared absorptionKachiraju Satya R.0Nekrashevich Ivan1Ahmad Imtiaz2Farooq Hira3Chang Long4Kim Sangsik5Kim Myoung-Hwan6Department of Physics and Astronomy, Texas Tech University, Lubbock, TX79409, USADepartment of Electrical and Computer Engineering, University of Houston, Houston, TX77204, USADepartment of Physics and Astronomy, Texas Tech University, Lubbock, TX79409, USADepartment of Physics and Astronomy, Texas Tech University, Lubbock, TX79409, USADepartment of Electrical and Computer Engineering, University of Houston, Houston, TX77204, USADepartment of Electrical and Computer Engineering, Texas Tech University, Lubbock, TX79409, USADepartment of Physics and Astronomy, Texas Tech University, Lubbock, TX79409, USAResonant optical cavities are essential components in mid-infrared applications. However, typical film-type cavities require multilayer stacks with a micron-thick spacer due to mid-infrared wavelengths, and their performance is limited by narrow frequency tunability and angular sensitivity. We propose and experimentally demonstrate the subwavelength-scale (≈λ0/150) resonant nanocavity arrays that enhance the absorption spectrum of the device in the mid-infrared (10–12 microns) via excitation of coupled surface plasmon–phonon polaritons. The proposed metal–insulator–polar dielectric (gold–silicon–silicon carbide) structure supports a guided mode of the coupled surface polaritons in the lateral direction while vertically confining the mid-infrared wave within the 80 nm thick dielectric spacer. In particular, the subwavelength-scale (≈λ0/10) gratings are imposed to form Fabry–Pérot cavity arrays displaying angle-insensitive and frequency-tunable absorption of up to 80% of the optical power in the mid-infrared. Our work should benefit diverse mid-infrared applications and novel designs of polariton-based photonic devices.https://doi.org/10.1515/nanoph-2022-0339coupled plasmon–phonon polariton modeenhanced optical power absorptionfabry–pérot cavity arraypropagating surface phonon polaritons |
| spellingShingle | Kachiraju Satya R. Nekrashevich Ivan Ahmad Imtiaz Farooq Hira Chang Long Kim Sangsik Kim Myoung-Hwan Coupled surface plasmon–phonon polariton nanocavity arrays for enhanced mid-infrared absorption Nanophotonics coupled plasmon–phonon polariton mode enhanced optical power absorption fabry–pérot cavity array propagating surface phonon polaritons |
| title | Coupled surface plasmon–phonon polariton nanocavity arrays for enhanced mid-infrared absorption |
| title_full | Coupled surface plasmon–phonon polariton nanocavity arrays for enhanced mid-infrared absorption |
| title_fullStr | Coupled surface plasmon–phonon polariton nanocavity arrays for enhanced mid-infrared absorption |
| title_full_unstemmed | Coupled surface plasmon–phonon polariton nanocavity arrays for enhanced mid-infrared absorption |
| title_short | Coupled surface plasmon–phonon polariton nanocavity arrays for enhanced mid-infrared absorption |
| title_sort | coupled surface plasmon phonon polariton nanocavity arrays for enhanced mid infrared absorption |
| topic | coupled plasmon–phonon polariton mode enhanced optical power absorption fabry–pérot cavity array propagating surface phonon polaritons |
| url | https://doi.org/10.1515/nanoph-2022-0339 |
| work_keys_str_mv | AT kachirajusatyar coupledsurfaceplasmonphononpolaritonnanocavityarraysforenhancedmidinfraredabsorption AT nekrashevichivan coupledsurfaceplasmonphononpolaritonnanocavityarraysforenhancedmidinfraredabsorption AT ahmadimtiaz coupledsurfaceplasmonphononpolaritonnanocavityarraysforenhancedmidinfraredabsorption AT farooqhira coupledsurfaceplasmonphononpolaritonnanocavityarraysforenhancedmidinfraredabsorption AT changlong coupledsurfaceplasmonphononpolaritonnanocavityarraysforenhancedmidinfraredabsorption AT kimsangsik coupledsurfaceplasmonphononpolaritonnanocavityarraysforenhancedmidinfraredabsorption AT kimmyounghwan coupledsurfaceplasmonphononpolaritonnanocavityarraysforenhancedmidinfraredabsorption |