A three-point Focused Laser Differential Interferometer (FLDI) instrument was implemented
to investigate the freestream disturbance environment in a Mach-6 shock tunnel. The FLDI …

Focused laser differential interferometry (FLDI) and its relative two-point FLDI (2pFLDI) are
used to make density fluctuation and velocity measurements, respectively, in a canonical …

Focused laser differential interferometry (FLDI), first introduced in the 1970s, has developed
into a powerful tool for the analysis of turbulent dynamics and fluctuations in fluid flows …

A focused laser differential interferometer (FLDI) simulation was used to study the sensitivity
of the FLDI technique to a variety of factors. The model takes in a series of density fields and …

Focused laser differential interferometry (FLDI) and its relative two-point focused laser
differential interferometry (2pFLDI) are completely non-intrusive (ie seedless) optical …

View Video Presentation: https://doi. org/10.2514/6.2021-0598. vid Experiments were
performed with two different focused laser differential interferometer (FLDI) instruments to …

View Video Presentation: https://doi. org/10.2514/6.2022-1796. vid The continuous
development and advancement of multi-point line focused laser differential interferometry …

Measurements of the flow in front of flat-face Pitot probes in NASA Langley Research
Center's 20-Inch Mach 6 Air Tunnel were made using a 35-point line focused laser …

View Video Presentation: https://doi. org/10.2514/6.2022-1312. vid A model of a focused
laser differential interferometer (FLDI) was modified to simulate the response to time-varying …

An instrument is demonstrated that is capable of simultaneous and independent flow density
fluctuation measurements over the same line-of-sight by combining two optical techniques …