Accession Number:

AD1058094

Title:

High power THz to IR Emission by Femtosecond Laser Irradiation of Random 2D Metallic Nanostructures

Descriptive Note:

Journal Article - Open Access

Corporate Author:

University of Rochester Rochester United States

Report Date:

2015-07-24

Pagination or Media Count:

11.0

Abstract:

Terahertz THz spectroscopic sensing and imaging has identified its potentials in a number of areas such as standoff security screening at portals, explosive detection at battle fields, bio-medical research, and so on. With these needs,the development of an intense and broadband THz source has been a focus of THz research. In this work, we report an intense 10mW and ultra-broadband 150THz THz to infrared IR source with a Gaussian wavefront,emitted from nano-pore-structured metallic thin films with femtosecond laser pulse excitation. The underlying mechanism has been proposed as thermal radiation. In addition, an intense coherent THz signal was generated through the optical rectification process simultaneously with the strong thermal signal. This unique feature opens upnew avenues in biomedical research

Subject Categories:

  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE