Electric field enhancement of coupled plasmonic nanostructures for optical amplification

Jun Hyun Kim; Ja Yeon Lee; Eung Soo Kim; Myung Yung Jeong

doi:10.1186/s43074-023-00086-4

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Jun Hyun Kim, Ja Yeon Lee, Eung Soo Kim, Myung Yung Jeong. Electric field enhancement of coupled plasmonic nanostructures for optical amplification[J]. PhotoniX. doi: 10.1186/s43074-023-00086-4

Citation:

Jun Hyun Kim, Ja Yeon Lee, Eung Soo Kim, Myung Yung Jeong. Electric field enhancement of coupled plasmonic nanostructures for optical amplification[J]. PhotoniX. doi: 10.1186/s43074-023-00086-4

Jun Hyun Kim, Ja Yeon Lee, Eung Soo Kim, Myung Yung Jeong. Electric field enhancement of coupled plasmonic nanostructures for optical amplification[J]. PhotoniX. doi: 10.1186/s43074-023-00086-4

Citation:

Jun Hyun Kim, Ja Yeon Lee, Eung Soo Kim, Myung Yung Jeong. Electric field enhancement of coupled plasmonic nanostructures for optical amplification[J]. PhotoniX. doi: 10.1186/s43074-023-00086-4

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Electric field enhancement of coupled plasmonic nanostructures for optical amplification

doi: 10.1186/s43074-023-00086-4

1.
Department of Cogno-mechatronics Engineering, Pusan National University, Busan, 46241, Korea
2.
ESPn Medic, ESPn Medic cooperation, Busan, 46241, Korea
3.
Department of Electronic & Robotics Engineering, Busan University of Foreign Studies, Busan, 46234, Korea
4.
Department of Optics and Mechatronics Engineering, Pusan National University, Busan, 46241, Korea

Funds: This study was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. 2022R1A2B5B01002377).and Following are results of a study on the “Leaders in Industry-university Cooperation 3.0” Project, supported by the Ministry of Education and National Research Foundation of Korea.

Received Date: 2022-08-23
Accepted Date: 2023-02-01
Rev Recd Date: 2023-01-28

Available Online: 2023-02-08

Abstract

Abstract

Plasmonic effects that enhance electric fields and amplify optical signals are crucial for improving the resolution of optical imaging systems. In this paper, a metal-based plasmonic nanostructure (MPN) is designed to increase the resolution of an optical imaging system by amplifying a specific signal while producing a plasmonic effect via a dipole nanoantenna (DN) and grating nanostructure (GN), which couple the electric field to be focused at the center of the unit cell. We confirmed that the MPN enhances electric fields 15 times more than the DN and GN, enabling the acquisition of finely resolved optical signals. The experiments confirmed that compared with the initial laser intensity, the MPN, which was fabricated by nanoimprint lithography, enhanced the optical signal of the laser by 2.24 times. Moreover, when the MPN was applied in two optical imaging systems, an indistinguishable signal that was similar to noise in original was distinguished by amplifying the optical signal as 106 times in functional near-infrared spectroscopy(fNIRS), and a specific wavelength was enhanced in fluorescence image. Thus, the incorporation of this nanostructure increased the utility of the collected data and could enhance optical signals in optics, bioimaging, and biology applications.
- Plasmonic effect,
- Nanostructure,
- Nanoimprint lithography,
- Field enhancement,
- Amplifying optical intensity,
- Selective deposition fabrication

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References(36)

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