Related Experiment Video
Updated: Jan 25, 2026
10:52
Direct Imaging of Laser-driven Ultrafast Molecular Rotation
Published on: February 4, 2017
10.2K
Adaptive control of laser-wakefield accelerators driven by mid-IR laser pulses
Optics Express
|May 5, 2019
Summary
We demonstrate adaptive control of laser-wakefield acceleration using mid-infrared laser pulses. This method optimizes electron beam quality, including charge and energy spectra, for advanced applications.
Area of Science:
- Plasma Physics
- Laser-Particle Acceleration
Background:
- Growing interest in high-intensity ultrafast laser-plasma interactions.
- Exploration of long-wavelength driver beams for enhanced control.
Purpose of the Study:
- Demonstrate coherent control of laser-wakefield acceleration dynamics.
- Utilize ultrashort mid-infrared laser pulses for MeV electron beam generation.
Main Methods:
- Employing ultrashort (∼100 fs) mid-infrared (∼3.9 μm) laser pulses.
- Using adaptive control systems with a genetic algorithm and deformable mirror.
- Particle-in-cell simulations to analyze interaction dynamics.
Main Results:
- Generated MeV-level, collimated electron beams with non-thermal spectra.
- Optimized electron beam charge, energy spectra, pointing, and stability.
- Achieved higher energy gain and improved beam collimation through wavefront optimization.
Conclusions:
- Mid-infrared laser-wakefield acceleration offers benefits like higher energy absorption and lower intensity requirements.
- Adaptive wavefront control is crucial for optimizing electron beam properties.
- Coherent control enables precise manipulation of laser-plasma interactions for advanced acceleration.
More Related Videos
Related Concept Videos
01:08Matrix-Assisted Laser Desorption Ionization (MALDI)
1.0K
Matrix-assisted laser desorption ionization (MALDI) is a powerful analytical technique used in mass spectrometry. It enables the identification and characterization of various biomolecules, including proteins, peptides, nucleic acids, and carbohydrates. MALDI is an ionization technique, widely employed in biological and medical research, as well as in fields like pharmacology and biochemistry.The analyte of interest, a biomolecule or a mixture of biomolecules, is mixed with a suitable matrix...
1.0K
01:16Pulse
2.0K
When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical...
The pulse serves as a clinical...
2.0K
01:05Pulse
3.5K
The pulse is one of the most fundamental physiological indicators of the body's cardiovascular health. It is the rhythmic expansion and contraction of the arterial walls in response to the pressure generated by the heart's pumping action.
Pulse Rate and its Significance
Pulse rate, often measured in beats per minute (bpm), reflects the heart rate (HR), which is influenced by numerous factors such as stress, physical activity, and hormonal changes. A normal resting adult pulse rate falls...
Pulse Rate and its Significance
Pulse rate, often measured in beats per minute (bpm), reflects the heart rate (HR), which is influenced by numerous factors such as stress, physical activity, and hormonal changes. A normal resting adult pulse rate falls...
3.5K
01:17Accelerators
278
Accelerators in concrete serve as admixtures to speed up the hardening process, enabling the concrete to achieve early strength faster. Although accelerators do not necessarily impact the time it takes concrete to set, they reduce this time in practice. A common accelerator is calcium chloride, which is particularly useful for hastening early strength development in cold weather or for rapid repair jobs that require quick heat generation after mixing.
The effectiveness of calcium chloride can...
The effectiveness of calcium chloride can...
278
01:17Accelerating Fluids
2.3K
When a fluid is in constant acceleration, the pressure and buoyant force equations are modified. Suppose a beaker is placed in an elevator accelerating upward with a constant acceleration, a. In the beaker, assume there is a thin cylinder of height h with an infinitesimal cross-sectional area, ΔS.
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:
2.3K
01:16Instantaneous Acceleration
22.8K
Acceleration is in the direction of the change in velocity, but it is not always in the direction of motion. When an object slows down, its acceleration is opposite to the direction of its motion. Although commonly referred to as deceleration, this causes confusion in our analysis as deceleration is not a vector, and does not point to a specific direction with respect to a coordinate system. Therefore, the term deceleration is not used. For example, when a subway train slows down, it...
22.8K