Related Experiment Video
Updated: Jun 14, 2026
10:39
Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
Published on: October 11, 2016
Generating ultrashort coherent soft X-ray radiation in storage rings using angular-modulated electron beams
Physical Review Letters
|April 7, 2010
Summary
A new method generates ultrashort coherent soft x-ray radiation using angular-modulated electron beams. This technique achieves significantly higher harmonic numbers than standard methods, enabling femtosecond coherent soft x-ray generation.
Area of Science:
- Physics
- Ultrafast Science
- X-ray Science
Background:
- Generating ultrashort coherent soft x-ray radiation is crucial for ultrafast science.
- Existing methods like coherent harmonic generation have limitations in achievable harmonic numbers.
Purpose of the Study:
- To propose and investigate a novel technique for generating ultrashort coherent soft x-ray radiation.
- To enhance the harmonic number achievable in coherent x-ray generation from storage rings.
Main Methods:
- Utilizing angular-modulated electron beams in storage rings.
- Employing a TEM01 mode laser to modulate electron beam angular distribution in an undulator.
- Implementing a specialized beamline to convert angular modulation to density modulation.
Main Results:
- Achieved density modulation with high harmonic components of the seed laser.
- Demonstrated harmonic numbers 1-2 orders of magnitude higher than standard coherent harmonic generation.
- Potential for generating femtosecond coherent soft x-ray radiation directly from an infrared laser.
Conclusions:
- The proposed technique offers a significant advancement in generating high-harmonic coherent soft x-rays.
- This method surpasses conventional techniques in achievable harmonic numbers.
- Opens new avenues for research in ultrafast sciences utilizing storage rings.
Related Concept Videos
01:10Generating Electromagnetic Radiations
The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in the...
01:24X-ray Imaging
German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with X-rays, and by 1900, X-ray was widely...
01:13Atomic Absorption Spectroscopy: Radiation and Light Sources
Atomic absorption spectroscopy (AAS) relies on the Beer-Lambert law, which requires that the radiation source emits a narrow range of wavelengths to match the absorption characteristics of the analyte atom. The primary criteria for choosing an appropriate radiation source in AAS is to provide a precise and intense emission at specific wavelengths that will allow accurate detection of the analyte.
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...