Coherent terahertz needle radiation emission mechanism from nanostructured ferromagnetic metal films excited by femtosecond laser pulses

A coherent terahertz needle radiation emission mechanism is proposed. This mechanism can be realized in the experiments on femtosecond laser pulses interacting with surface of nanostructured ferromagnetic metal film. The proposed mechanism is based on exciting of coupled coherent phonon-magnon modes...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2008-09
Main Authors: Gladun, Anatoly D, Leiman, Vladimir G, Arsenin, Aleksey V
Format: Article
Language:English
Subjects:
Coherence
Coupled modes
Emission
Femtosecond pulses
Ferromagnetic materials
Lasers
Magnons
Metal films
Metal surfaces
Nanostructure
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A coherent terahertz needle radiation emission mechanism is proposed. This mechanism can be realized in the experiments on femtosecond laser pulses interacting with surface of nanostructured ferromagnetic metal film. The proposed mechanism is based on exciting of coupled coherent phonon-magnon modes on a nanostructured metal surface by laser femtosecond pulse. The value of the Poynting vector for the terahertz radiation is estimated.
ISSN:2331-8422