Single-electron driven chip size near infrared free-electron laser

Prabir Garu; Wei-Chih Wang; Karthickraj Muthuramalingam

doi:10.1117/12.3012692

9 May 2024 Single-electron driven chip size near infrared free-electron laser

Prabir Garu, Wei-Chih Wang, Karthickraj Muthuramalingam

Proceedings Volume 12948, Soft Mechatronics and Wearable Systems; 129480G (2024) https://doi.org/10.1117/12.3012692
Event: SPIE Smart Structures + Nondestructive Evaluation, 2024, Long Beach, California, United States

Abstract

This study proposed a high intensity and single-mode cross-fishnet grating based single-electron near infrared (NIR) free -electron laser (FEL). We have numerically investigated the achievable laser emission from a single electron and atop a nano-grating silicon waveguide in order to envision a chip-size free-electron laser as a potent research tool, for the first time. A single 45-keV electron generates 1.14 μm laser-like radiation at the Bragg resonance of a 31 μm long silicon grating with a 250-nm thickness and 1.23- μm period. The FEL is capable of producing a high intensity Electric field of 7.45× 10^-10 V/m, and magnetic field of 6.0× 10^-12 A/m. Besides, the FEL can generate a single-mode emission of radiation at 0.2629 PHz. This research suggests that electrons might interact with the structure more effectively by utilizing methods from both electron beam physics and nanophotonic design to create high-brightness photon sources for potential applications in the NIR wavelengths. It would also be fascinating to look deeper into the possibility of single-photon sources for quantum optics in nano-grating generated by a single keV electron.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Prabir Garu, Wei-Chih Wang, and Karthickraj Muthuramalingam "Single-electron driven chip size near infrared free-electron laser", Proc. SPIE 12948, Soft Mechatronics and Wearable Systems, 129480G (9 May 2024); https://doi.org/10.1117/12.3012692

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KEYWORDS

Free electron lasers

Near infrared

Waveguides

Laser radiation

Silicon

Electron beams

Optical gratings

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