Off-axis phase-matched terahertz emission from two-color laser-induced plasma filaments
We observe off-axis phase-matched terahertz generation in long air-plasma filaments
produced by femtosecond two-color laser focusing. Here, phase matching naturally occurs …
produced by femtosecond two-color laser focusing. Here, phase matching naturally occurs …
Intense terahertz generation in two-color laser filamentation: energy scaling with terawatt laser systems
We investigate high-power terahertz (THz) generation in two-color laser filamentation using
terawatt (TW) lasers including a 0.5 TW, 1 kHz system, as well as 2 and 30 TW systems both …
terawatt (TW) lasers including a 0.5 TW, 1 kHz system, as well as 2 and 30 TW systems both …
Optical guiding in 50-meter-scale air waveguides
The distant projection of high-peak and average-power laser beams in the atmosphere is a
long-standing goal with a wide range of applications. Our early proof-of-principle …
long-standing goal with a wide range of applications. Our early proof-of-principle …
Demonstration of long-lived high-power optical waveguides in air
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 …
waveguide structure in air with a lifetime of several milliseconds, making possible the very …
The effect of long timescale gas dynamics on femtosecond filamentation
YH Cheng, JK Wahlstrand, N Jhajj, HM Milchberg - Optics express, 2013 - opg.optica.org
Femtosecond laser pulses filamenting in various gases are shown to generate long-lived
quasi-stationary cylindrical depressions or 'holes' in the gas density. For our experimental …
quasi-stationary cylindrical depressions or 'holes' in the gas density. For our experimental …
Self-Guided Propagation of Ultrashort Laser Pulses in the Anomalous Dispersion<? format?> Region of Transparent Solids: A New Regime of Filamentation
We report measurements concerning the propagation of femtosecond laser pulses in fused
silica with a wavelength at 1.9 μ m falling in the negative group velocity dispersion region …
silica with a wavelength at 1.9 μ m falling in the negative group velocity dispersion region …
Absolute measurement of the transient optical nonlinearity in N, O, NO, and Ar
JK Wahlstrand, YH Cheng, HM Milchberg - Physical Review A—Atomic …, 2012 - APS
The absolute time-dependent nonlinear response of O 2, N 2, N 2 O, and Ar to intense
nonionizing, ultrashort optical pump pulses is measured with single-shot spectral …
nonionizing, ultrashort optical pump pulses is measured with single-shot spectral …
Superfilamentation in air
The interaction between a large number of laser filaments brought together using weak
external focusing leads to the emergence of few filamentary structures reminiscent of …
external focusing leads to the emergence of few filamentary structures reminiscent of …
[HTML][HTML] Generation of scalable terahertz radiation from cylindrically focused two-color laser pulses in air
We demonstrate scalable terahertz (THz) generation by focusing terawatt, two-color laser
pulses in air with a cylindrical lens. This focusing geometry creates a two-dimensional air …
pulses in air with a cylindrical lens. This focusing geometry creates a two-dimensional air …
[PDF][PDF] 空气中飞秒激光成丝的强场分子动力学研究进展
王佳辰， 郭兰军， 张楠， 张智， 林列… - Chinese Journal of …, 2023 - researching.cn
摘要高强度的飞秒激光在非线性介质成丝过程中会产生一系列非线性效应, 如强场电离,
转动拉曼, 高次谐波, 激射等, 这些非线性效应与强场下分子的复杂运动有关 …
转动拉曼, 高次谐波, 激射等, 这些非线性效应与强场下分子的复杂运动有关 …