The present contribution compares the energy absorption, optical emission, temperature,
and fluid dynamics of ultraviolet (UV) λ= 266 nm and near infrared (NIR) λ= 1064 nm …

Remote detection of a distant, shielded sample of radioactive material is an important goal,
but it is made difficult by the finite spatial range of the decay products. Here, we present a …

Planar Rayleigh scattering and Rayleigh scattering polarimetry are applied toward
measurements of molecular dissociation, thermometry, and the visualization of fluid …

We present experimental and modeling studies of air pre-ionization using ultraviolet (UV)
laser pulses and its effect on laser breakdown of an overlapped near-infrared (NIR) pulse …

Here we present quantitative measurements of total electron numbers in laser-induced air
breakdown at pressures ranging from atmospheric to 40 bar g by 10 ns and 100 ps laser …

Temperature measurements are presented of a non-equilibrium air breakdown plasma
using optical emission spectroscopy. A plasma is created with a focused 110 GHz 3 μs pulse …

Multiphoton ionization mechanisms and ionization rates of atmospheric air and constituent
gases are studied at the 248-nm KrF laser wavelength within a laser pulse intensity range of …

We demonstrate that avalanche ionization breakdown of air with picosecond mid-infrared
(mid-IR) laser pulses is an exceptionally sensitive and quantitative probe of extremely low …

Plasma oscillations were investigated by electrical detection under different operating
parameters during bead-on-plate welding of 304 stainless steel with a Nd: YAG laser. The …

Amplification of laser-induced plasma in air is demonstrated utilizing resonant laser
ionization and avalanche ionization. Molecular oxygen in air is ionized by a low-energy …