Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Subwavelength terahertz spin-flip laser based on a magnetic point-contact array

Not Accessible

Your library or personal account may give you access

Abstract

We present a theoretical design for a single-mode, truly subwavelength terahertz disk laser based on a nanocomposite gain medium comprising an array of normal-metal/ferromagnetic (FM) point contacts embedded in a thin dielectric layer. Stimulated emission of light occurs due to spin-flip relaxation of spin-polarized electrons injected from the FM side of the contacts. Ultrahigh electrical current densities in the contacts and a dielectric material with a large refractive index, neither condition being achievable in conventional semiconductor media, enables the thresholds of lasing to be overcome for the lowest-order modes of the disk, making single-mode operation possible.

© 2011 Optical Society of America

Full Article  |  PDF Article
More Like This
Subwavelength micropillar array terahertz lasers

Michael Krall, Martin Brandstetter, Christoph Deutsch, Hermann Detz, Aaron Maxwell Andrews, Werner Schrenk, Gottfried Strasser, and Karl Unterrainer
Opt. Express 22(1) 274-282 (2014)

Terahertz scattering by subwavelength cylindrical arrays

Gretel M. Png, Christophe Fumeaux, Mark R. Stringer, Robert E. Miles, and Derek Abbott
Opt. Express 19(11) 10138-10152 (2011)

MEMS-based tunable terahertz wire-laser over 330 GHz

Qi Qin, John L. Reno, and Qing Hu
Opt. Lett. 36(5) 692-694 (2011)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved