Two-dimensional femtosecond Doppler mapping spectrometer.
Grant Program (CFDA)
Place of Performance
Fort Collins, Colorado 80525-4880 United States
Single Zip Code
Amendment Since initial award the End Date has been extended from 06/26/23 to 12/31/23.
XUV Lasers was awarded Project Grant DESC0022935 worth $199,769 from the Office of Science in June 2022 with work to be completed primarily in Fort Collins Colorado United States. The grant has a duration of 1 year 6 months and was awarded through assistance program 81.049 Office of Science Financial Assistance Program. The Project Grant was awarded through grant opportunity FY 2022 SBIR/STTR Phase I Release 2.
STTR Phase I
Two-Dimensional Femtosecond Doppler Mapping Spectrometer
The problem being addressed: The plasmas generated by intense lasers are of great interest for fundamental physics and for practical reasons that include the generation of high energy photon and particle beams, industrial processes such as extreme ultraviolet lithography, and fusion energy. These plasmas have complex dynamics, of which time resolved velocity distribution can reveal important attributes, including the initial inward motion of the plasma driven by the intense laser pulse, the lateral transport of energy, and the subsequent plasma expansion. Several types of instruments have been developed to measure the plasma velocity. One of these instruments is the VISAR (velocity interferometer system for any reflector). However, as its time resolution is typically limited from nanoseconds to tens of picoseconds depending on the detectors used, it is challenging to map the velocity in the transverse direction with high temporal resolution. How we propose to address the problem/ situation in Phase I: XUV Lasers, in collaboration with Colorado State University, proposes to develop and demonstrate an instrument that will be able to map the velocity of plasmas generated by ultra-intense ultrashort pulse laser in two dimensions (2-D) with a spatial resolution of a few micrometers and femtosecond time resolution using a single spectrometer. In this instrument the Doppler shift of a second harmonic probe laser pulse of ~ 50 fs femtosecond duration reflected by the plasma will be measured simultaneously at many plasma locations using a high magnification microscope objective and a custom designed grating spectrometer. The time evolution of the velocity will be measured by varying the delay between the laser pulse that drives the plasma and the probe pulse. The necessary software to acquire, display, and convert the data into a velocity map will be developed. The instrument will be designed in Phase I and a proof-of-principle experiment will be conducted to demonstrate the concept. Commercial applications and other benefits: This new plasma diagnostics instrument could be of significant use in many ultra-intense laser-matter interaction experiments conducted at different research and laser facilities, including those that are part of LaserNetUS, and for the laser-created plasmas that are of industrial interest for extreme ultraviolet lithography.
Last Modified 8/14/23
Period of Performance
100.0% Federal Funding
0.0% Non-Federal Funding
Modifications to DESC0022935
Award ID FAIN
Award ID URI
892430 SC CHICAGO SERVICE CENTER
|Science, Energy Programs, Energy (089-0222)
|General science and basic research
|Grants, subsidies, and contributions (41.0)