Publications by authors named "Elijah R Jans"
Article Synopsis
- The study explores advanced measurement techniques for understanding high-temperature air plasma during hypersonic flight testing.
- The researchers utilized multiplex nanosecond CARS to obtain temperature readings in a plasma plume created by an inductively coupled plasma torch, achieving some of the highest temperature measurements recorded with this method (up to 6700 K).
- Key findings include improved detection capabilities using an intensified CCD camera, allowing for single-laser-shot measurements at extreme temperatures and detailed temperature profiles and precision data, which could enhance future hypersonic technology development.
Demonstration of broadband nanosecond coherent anti-Stokes Raman scattering (CARS) using a burst-mode-pumped noncolinear optical parametric oscillator (NOPO) has been achieved at a pulse repetition rate of 40 kHz. The NOPO is pumped with the 355-nm output of a burst-mode Nd:YAG laser at 50 mJ/pulse for 45 pulses and produces an output centered near 607 nm, with a bandwidth of 370 cm at energies of 5 mJ/pulse. A planar BOXCARS phase matching scheme uses the broadband NOPO output as the Stokes beam and the narrowband 532-nm burst-mode output for the two CARS pump beams for single-laser-shot nitrogen thermometry in near adiabatic H/air flames at temperatures up to 2200 K.
View Article and Find Full Text PDF