Ultrafast Spatially and Spectrally Resolved Thermal Property Measurements
Abstract
PI-Hopkins requests support for a sub-picosecond, high-repetition rage (1 MHz) amplified laser system that will form the basis of pump-probe experiments providing thermal properties of materials, composites and devices with 400 femtosecond temporal resolution and spatial resolution ranging from less than ten nanometers up to bulk length scales. Specifically, we are requesting a Spectra-Physics Spirit-One/OPA system, which will enable high repetition-rate automated optical parametric amplification of sub-picosecond laser pulses with a spectral range from 210 nm–16 ?m. This unique system will redefine the current state-of-the-art (SOA) beyond traditional thermoreflectance-based thermal metrologies by extending the wavelength capabilities typically used in these optical experiments. The synergy created through integrating this equipment into the PI’s existing facilities will enable full thermal characterization of energetic exchange and thermal transport processes in materials and devices from < 100 femtoseconds and < 10 nm up to bulk length and macro-time scales. This ability to probe temperature and thermal transport processes over many orders of magnitude of temporal and spatial scales will create an extremely unique, world class facility in the PI’s laboratory that will enhance several existing collaborations, enable extensive training of students, and provide significant positive impact to a wide array of DoD programs and technologies. The research in these DoD programs will be substantially enhanced to novel regimes via the proposed SOA methods, enabling novel research activities centered around thermometry and thermal property measurements. The instrument will contribute to both research and educational missions, while directly integrating into training of students involved in DoD programs and undergraduate students, along with enhancing classroom activities. The proposed instrument, which has an estimated lifetime of ~20 years, will complement existing infrastructure, providing capabilities that will substantially impact DoD programs and technologies of interest to the United States.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 10, 2018
- Source ID
- N000141812259
Entities
People
- Patrick Hopkins
Organizations
- Office of Naval Research
- United States Navy
- University of Virginia