230 citations · 261 across the 2 of their papers we have counts for
5 papers
Spatio-temporal optical vortices
N. Jhajj, I. Larkin, E. W. Rosenthal +3
We present the first experimental evidence, supported by theory and simulation, of spatiotemporal optical vortices (STOVs). Quantized STOVs are a fundamental element of the nonline…
Sensitivity of propagation and energy deposition in femtosecond filamentation to the nonlinear refractive index
E. W. Rosenthal, J. P. Palastro, N. Jhajj +3
The axial dependence of femtosecond filamentation in air is measured under conditions of varying laser pulsewidth, energy, and focusing f-number. Filaments are characterized by the…
Direct measurement of the acoustic waves generated by femtosecond filaments in air
J. K. Wahlstrand, N. Jhajj, E. W. Rosenthal +2
We present direct measurements of the gas acoustic dynamics following interaction of spatial single- and multi-mode 50 fs, 800 nm pulses in air at 10 Hz and 1 kHz repetition rates.…
Demonstration of long-lived high power optical waveguides in air
N. Jhajj, E. W. Rosenthal, R. Birnbaum +2
We demonstrate that femtosecond filaments can set up an extended and robust thermal waveguide structure in air with a lifetime of several milliseconds, making possible the very lon…
Optical beam dynamics in a gas repetitively heated by femtosecond filaments
N. Jhajj, Y. -H. Cheng, J. K. Wahlstrand +1
We investigate beam pointing dynamics in filamentation in gases driven by high repetition rate femtosecond laser pulses. Upon suddenly exposing a gas to a kilohertz train of filame…