About the Jaron-Becker Group
Agnieszka Jaron-Becker is Associate Research Professor of Physics at the University of Colorado, Boulder, and JILA Fellow. In JILA, she serves as co-director of JILA’s Ultrafast Theory Group, which specializes in theoretical studies of ultrafast processes in atoms, molecules, and nanostructures. These ultrafast processes are induced, observed, and controlled by ultrashort intense laser pulses. The laser frequencies studied range from the far infrared through the optical to the soft x-ray region of the electromagnetic spectrum.
Research Areas
Topics:
- Multiphoton ionization of atoms and molecules
- Resonance enhanced ionization for molecules
- Time delays in two photon resonant and nonresonant ionization of atoms and molecules
Topics:
- Mollow sidebands in HHG from molecules
- Multiple rescatterings in HHG from atoms and molecules
Topics:
- Collinear and non-collinear generation of EUV high harmonics with circular polarization
- Efficient soft X-ray high harmonic generation in multiply-ionized plasmas in the ultraviolet regime
- Optimizing isolated broadband attosecond pulse generation via time-gated phase and group velocity matching
- ...and more
Topics:
- Attosecond coherent control of electron dynamics in atoms and molecules
- Attosecond measurement techniques
Topics:
- Approximate methods based on Intense Field Many Body S- matrix (method called sometimes Keldysh-Faisal-Reiss (KFR) or Strong Field Approximation (SFA))
- Floquet basis functions (complex Gaussian and complex Sturmian) based code
- Wavepacket propagation using finite difference and finite element algorithms
- ...and more
Stories About Our Research
Reconstructing Laser Pulses
Many physicists use lasers to study quantum mechanics, atomic and molecular physics and nanophysics. While these lasers can be helpful in the research process, there are certain constraints for the researcher. According to JILA Fellow…
Read MoreMeasuring Spinning Donuts
Follow that electron! JILA researchers have proposed a means of capturing an electron's flight path during ionization, and in doing so, determining the state of the atom at that moment.
Read MoreA Collaborative Mastery of X-rays
The hardest problems are never solved by one person. They are solved by teams; or in the case of science, collaborations. It took a collaboration of 17 researchers, including four JILA fellows and another six JILA affiliates, just a…
Read More
Back to the Future: The Ultraviolet Surprise
Imagine laser-like x-ray beams that can “see” through materials––all the way into the heart of atoms. Or, envision an exquisitely controlled four-dimensional x-ray microscope that can capture electron motions or watch chemical reactions…
Read MoreAn Ultrafast Photoelectric Adventure
The photoelectric effect has been well known since the publication of Albert Einstein’s 1905 paper explaining that quantized particles of light can stimulate the emission of electrons from materials. The nature of this quantum…
Read More
Research Highlights
Reconstructing Laser Pulses
Many physicists use lasers to study quantum mechanics, atomic and molecular physics and nanophysics. While these lasers can be helpful in the research process, there are certain constraints for the researcher. According to JILA Fellow…
Read More
Measuring Spinning Donuts
Follow that electron! JILA researchers have proposed a means of capturing an electron's flight path during ionization, and in doing so, determining the state of the atom at that moment.
Read More
A Collaborative Mastery of X-rays
The hardest problems are never solved by one person. They are solved by teams; or in the case of science, collaborations. It took a collaboration of 17 researchers, including four JILA fellows and another six JILA affiliates, just a…
Read More
Back to the Future: The Ultraviolet Surprise
Imagine laser-like x-ray beams that can “see” through materials––all the way into the heart of atoms. Or, envision an exquisitely controlled four-dimensional x-ray microscope that can capture electron motions or watch chemical reactions…
Read More
An Ultrafast Photoelectric Adventure
The photoelectric effect has been well known since the publication of Albert Einstein’s 1905 paper explaining that quantized particles of light can stimulate the emission of electrons from materials. The nature of this quantum…
Read More
In the Spotlight
December 30, 2020: Tyler McMaken, Ran Brynn Reiff, and Julia Cline all win 2020 CU Physics awards
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JILA graduate students Tyler McMaken, Ran Brynn Reiff, and Julia Cline all win the 2020 CU Physics Department TA awards
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January 07, 2019: Zetong Xue wins Stephen Halley White Undergraduate Research Award
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Zetong Xue, a JILA undergraduate researcher and recent CU Boulder Honors graduate, was awarded the Stephen Halley White Undergraduate Research Award at the CU Physics graduation ceremony in December.
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JILA Address
We are located at JILA: A joint institute of NIST and the University of Colorado Boulder.
Map | JILA Phone: 303-492-7789 | Address: 440 UCB, Boulder, CO 80309