Highly tunable corrugated metal nano-grating laser using current injection

Jed Khoury; Charles L. Woods; John Kierstead; John Donoghue

doi:10.1117/12.883519

13 May 2011 Highly tunable corrugated metal nano-grating laser using current injection

Jed Khoury, Charles L. Woods, John Kierstead, John Donoghue

Author Affiliations +

Proceedings Volume 8031, Micro- and Nanotechnology Sensors, Systems, and Applications III; 80312L (2011) https://doi.org/10.1117/12.883519
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

In this paper we designed a highly tunable laser with a corrugated metallic nano-grating. The design leverages the free electron laser design based on either the transit of an e-beam in the vicinity of a metallic grating or the transit of an ebeam through a periodic, transverse magnetic field produced by arranging magnets with alternating poles. Our design consists of a nano-film that is evaporated over a PMMA nano-grating. Current is injected into the nano-grating thin film. The electrons in the injected current experience an oscillating motion due to the corrugated grating structure. If the mean free path of the electrons within the nano-grating is long enough compared to the nano-grating spacing, the electron wave emits electromagnetic radiation. We developed the electromagnetic emission theory by solving Maxwell's equations for a current injected into a nano-wave grating, taking into consideration the electron mean free path. A corrugated nano-grating device with an area of 300 μm × 300 μm and a 30 nm grating spacing was fabricated.

Citation Download Citation

Jed Khoury, Charles L. Woods, John Kierstead, and John Donoghue "Highly tunable corrugated metal nano-grating laser using current injection", Proc. SPIE 8031, Micro- and Nanotechnology Sensors, Systems, and Applications III, 80312L (13 May 2011); https://doi.org/10.1117/12.883519

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KEYWORDS

Electrons

Magnetism

Free electron lasers

Tunable lasers

Maxwell's equations

Metals

Optical design

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