Abstract

In this work we model the diffusion-controlled kinetic mechanisms of (i) the strong electron superheating above the critical energy of impact ionization that develops within the generated skin depth when the neutral atoms deplete and (ii) recombination effects, which are involved in short-pulsed laser-induced breakdown and after-pulse relaxation in dielectrics. In the numerical simulations we use (iii) the two-temperature model modified for laser-matter interaction with dielectrics in combination with (iv) a computational approach developed for treating the auto-oscillatory dynamics of the electron energy and density induced by the onset of impact ionization during pulsed laser excitation and after-pulse relaxation.

© 2021 Optical Society of America

3D CFD modeling of flowing-gas Rb DPALs: effects of buffer gas composition and of ionization of high lying Rb states

Karol Waichman, Boris D. Barmashenko, and Salman Rosenwaks
J. Opt. Soc. Am. B 38(11) 3523-3531 (2021)

Highly efficient 2.3 µm thulium lasers based on a high-phonon-energy crystal: evidence of vibronic-assisted emissions

Pavel Loiko, Esrom Kifle, Lauren Guillemot, Jean-Louis Doualan, Florent Starecki, Alain Braud, Magdalena Aguiló, Francesc Díaz, Valentin Petrov, Xavier Mateos, and Patrice Camy
J. Opt. Soc. Am. B 38(2) 482-495 (2021)

Optically controlled ultrafast terahertz switching in wafer scale PtSe₂ thin films

Jibo Fu, Meng Jiang, Peng Suo, Wenjie Zhang, Xian Lin, Xiaona Yan, Saifeng Zhang, and Guohong Ma
Appl. Opt. 60(17) 5037-5043 (2021)

Modulation dynamics of atomic Rydberg excitation in strong-field tunneling ionization

Peipei Xin, Tianhui Qiu, Libo Chen, Hongyang Ma, and Hongping Liu
J. Opt. Soc. Am. B 38(4) 1031-1039 (2021)

Laser-induced electric breakdown in water

C. A. Sacchi
J. Opt. Soc. Am. B 8(2) 337-345 (1991)