The recent progress in high-speed (≥ 100k H z) laser diagnostics for hypersonic flows is
reviewed. Owing to the ultrahigh flow speed, a laser frequency of 100 kHz or higher is …

Since the introduction of linear array focused laser differential interferometry (LA-FLDI), its
use has rapidly proliferated as it extends the capabilities of FLDI to multiple measurement …

The second-mode instability on a 7° half-angle sharp cone at Mach 6 is analyzed using high-
speed calibrated schlieren imagery at a frame rate near the expected fundamental …

View Video Presentation: https://doi. org/10.2514/6.2023-0223. vid Two-point focused laser
differential interferometry (2pFLDI) is shown to be a viable technique for making non …

A modification to cylindrical focused laser differential interferometry (CFLDI) that, without
beam intersection, can achieve smaller stand-off distances from flat geometries than …

A spatial light modulator (SLM) is incorporated into a focused laser differential interferometer
(FLDI) to generate a nonlinear array of beams, and this setup is used to measure the power …

A modified version of focused laser differential interferometry (FLDI) is demonstrated with
adjacent beam pairs distributed along the optical axis. This feature is accomplished using …

This work demonstrates the capability of a high speed camera as a detector for focused
laser differential interferometry (FLDI) a cylindrical lens setup. To test the system's capability …

We explore a novel variation on the application of Femtosecond Laser Electronic Excitation
Tagging (FLEET) to experimentally determine the stream-wise velocity in high-speed flow at …

View Video Presentation: https://doi. org/10.2514/6.2023-3703. vid The effect of variable
beam separation on the performance of Focused Laser Differential Interferometry (FLDI) in …