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Center Innovation Fund: LaRC CIF

Multi-Parameter Measurement in Unseeded Flows Using Femtosecond Lasers, Year 1

Completed Technology Project
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Project Description

Multi-Parameter Measurement in Unseeded Flows Using Femtosecond Lasers, Year 1
We will take advantage of recent advancements in laser technology to explore new measurement techniques for NASA's wind tunnel facilities. Femtosecond (fs) lasers are 100,000x shorter pulse than typical 10 ns pulse lasers resulting in much higher power than existing previously laser technology. Can generates nonlinear effects: FLEET and FS CARS (FLEET = Femtosecond laser electronic excitation and tagging; CARS = Coherent anti-Stokes Raman Spectroscopy). Can use these techniques to measure velocity, temperature, pressure or density in wind tunnel flows with unprecedented precision accuracy. FLEET works very well in high pressure, low temperature N2 flows, such as our NTF. Such measurements will provide knowledge about flow fields as well as quantitative data for comparison with computations of the flow. More »

Anticipated Benefits

Primary U.S. Work Locations and Key Partners

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