11 citations · 25 across the 7 of their papers we have counts for
7 papers
Optical Measurement of Photorecombination Time Delays
Chunmei Zhang, Graham G. Brown, Dong Hyuk Ko +1
Recollision physics and attosecond pulse generation meld the precision of optics with collision physics. As a follow-up to our previous work, we reveal a new direction for the stud…
Characterizing multielectron dynamics during recollision
Graham G. Brown, Dong Hyuk Ko, Chunmei Zhang +1
Measuring the delay for an electron to emerge from different states is one of the major achievements of attosecond science. This delay can have two origins - the electron wave pack…
Near-field imaging of dipole emission modulated by an optical grating
Dong Hyuk Ko, Graham G. Brown, Chunmei Zhang +1
Multiphoton-ionized electrons are born into a strong light field that will determine their short-term future. By controlling the infrared beam, we enable atoms or molecules to gene…
Characterizing Fano Resonances During Recollision
Graham G. Brown, Dong Hyuk Ko, Chunmei Zhang +1
When intense light irradiates a quantum system, an ionizing electron recollides with its parent ion within the same light cycle and, during that very brief (few femtosecond) encoun…
Surface Adhesion of Back-Illuminated Ultrafast Laser-Treated Polymers
Deepak L. N. Kallepalli, Alan T. K. Godfrey, Jesse Ratte +3
We report a decreased surface wettability when polymer films on a glass substrate are treated by ultra-fast laser pulses in a back-illumination geometry. We propose that back-illum…
Control of Air Lasing
Mathew Britton, Marianna Lytova, Dong Hyuk Ko +6
A near-infrared laser generates gain on transitions between the and states of the nitrog…
Femtosecond-laser-induced nanoscale blisters in polyimide thin films through nonlinear absorption
A. T. K. Godfrey, L. N. D. Kallepalli, J. J. Ratté +2
Nonlinear absorption of femtosecond laser pulses provides a unique opportunity to confine energy deposition in any medium to a region that is below the focal diameter of a pulse. I…