Sensors are perhaps the most important and integral components of our modern society.
With global warming and environmental pollution garnering ever-increasing attention, as …

High-energy burst-mode lasers have enabled the development of kHz–MHz rate, multi-
dimensional diagnostics for characterizing highly dynamic and transient phenomena in …

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 …

This manuscript describes the wide variety of optical measurement techniques for
characterizing the flow in hypersonic wind tunnels. The introduction briefly describes …

Picosecond-laser electronic-excitation tagging (PLEET), a seedless picosecond-laser-based
velocimetry technique, is demonstrated in non-reactive flows at a repetition rate of 100 kHz …

Temperature measurements based on gas-phase coherent anti-Stokes Raman scattering
(CARS) spectroscopy are demonstrated in reacting flows at a rate of 100 kHz employing a …

The transition of the boundary-layer state from laminar to turbulent on a 7° sharp cone in
Mach 10 flow is measured using several high-speed optical diagnostics capable of time …

Krypton (Kr)-based tagging velocimetry is demonstrated in a Kr/N_2 jet at 100 kHz repetition
rate using a custom-built burst-mode laser and optical parametric oscillator (OPO) system. At …

kHz particle image velocimetry (PIV) is demonstrated using a double-pulsed, burst-mode
laser with a burst duration up to 100 ms. This enables up to 10,000 time-sequential vector …

10 kHz two-color OH planar laser-induced fluorescence (PLIF) thermometry was
demonstrated in both laminar Hencken flames and turbulent premixed jet flames using two …