skip to main content

SciTech ConnectSciTech Connect

Title: Thermal response of double-layered metal films after ultrashort pulsed laser irradiation: The role of nonthermal electron dynamics

The thermal response of a Cu-Ti double-layered film is investigated after laser irradiation with ultrashort pulses (pulse duration τ{sub p} = 50 fs, 800 nm laser wavelength) in submelting conditions by including the influence of nonthermal electrons. A revised two-temperature model is employed to account for the contribution of nonthermal electron distribution while the variation of the optical properties of the material during the laser beam irradiation is also incorporated into the model. Theoretical results can provide significant insight into the physical mechanism that characterize electron dynamics and can facilitate production of controllable ultra-high strength Cu-Ti alloys with promising applications.
Authors:
 [1]
  1. Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology (FORTH), N. Plastira 100, Vassilika Vouton, 70013 Heraklion, Crete (Greece)
Publication Date:
OSTI Identifier:
22283271
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COPPER ALLOYS; ELECTRONS; LASER RADIATION; OPTICAL PROPERTIES; PULSED IRRADIATION; TEMPERATURE DEPENDENCE; THIN FILMS; TITANIUM ALLOYS