Related Experiment Video
Updated: Mar 19, 2026
10:17
20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
Published on: July 12, 2017
12.1K
Model of high-order harmonic generation from laser interaction with a plasma grating
S J Zhang1, H B Zhuo1,2, D B Zou1
1College of Science, National University of Defense Technology, Changsha 410073, P. R. China.
Physical Review. E
|June 15, 2016
Summary
High-intensity lasers interacting with plasma gratings can generate enhanced harmonic radiation. This phenomenon, driven by electron motion and grating interference, occurs when laser harmonics match the grating
Area of Science:
- Plasma physics
- Laser-matter interactions
- Nonlinear optics
Background:
- High-intensity short-pulse lasers interacting with solid targets can generate complex harmonic spectra.
- Understanding harmonic generation is crucial for applications in attosecond science and high-energy particle acceleration.
Purpose of the Study:
- To investigate harmonic generation from a solid plasma grating irradiated by a high-intensity short-pulse laser.
- To identify the conditions leading to significant enhancement of harmonic radiation.
Main Methods:
- Analytical modeling of laser-plasma interactions.
- Particle-in-cell (PIC) simulations to capture complex plasma dynamics.
Main Results:
- Observed significant enhancement of harmonic radiation under specific conditions.
- Identified that enhancement occurs when excited radiation matches a harmonic of the grating periodicity.
- Demonstrated narrow angular spread of enhanced harmonics in specific directions.
Conclusions:
- The observed harmonic enhancement is attributed to an interference effect modulated by the plasma grating.
- The findings provide insights into controlling and optimizing harmonic generation in laser-plasma systems.
