Zobrazeno 1 - 10
of 211
pro vyhledávání: '"Brannon, B."'
Autor:
Heuer, P. V., Peebles, J. L., Kunimune, J., Rinderknecht, H. G., Davies, J. R., Gopalaswamy, V., Frelier, J., Scott, M., Roberts, J., Brannon, B., McClow, H., Fairbanks, R., Regan, S. P., Frenje, J. A., Johnson, M. Gatu, Séguin, F. H., Crilly, A. J., Appelbe, B. D., Farrell, M., Stutz, J.
Energetic charged particles generated by inertial confinement fusion (ICF) implosions encode information about the spatial morphology of the hot-spot and dense fuel during the time of peak fusion reactions. The knock-on deuteron imager (KoDI) was dev
Externí odkaz:
http://arxiv.org/abs/2412.03362
We present a wide-field multi-pass implementation of label-free imaging flow cytometry. Our technique is shown for high-speed flow imaging of ensembles of human red blood cells with up to four passes, demonstrating x4 enhancement in contrast and sign
Externí odkaz:
http://arxiv.org/abs/2211.15791
Autor:
Reynolds, Joshua L., Israel, Yonatan, Bowman, Adam J., Klopfer, Brannon B., Kasevich, Mark A.
Nanosecond electron pulses are appealing for ultrafast imaging and electron gating applications, where tunable currents and narrow energy spreads are desirable. Here, we demonstrate photoemission from a Schottky emitter triggered by nanosecond laser
Externí odkaz:
http://arxiv.org/abs/2209.04478
Autor:
Koppell, Stewart A., Israel, Yonatan, Bowman, Adam J., Klopfer, Brannon B., Kasevich, Mark A.
A number of visions for a new generation of dose-efficient electron microscopes have been advanced. These proposals, while inspired by quantum principles, make little contact with the broader field of quantum metrology. We discuss a framework calcula
Externí odkaz:
http://arxiv.org/abs/2201.09183
Autor:
Klopfer, Brannon B., Kasevich, Mark A.
We present a continuous-wave, post selection-free implementation of a widefield optical multipass microscope. It can be operated with a spatially and temporally incoherent light source, and requires no active outcoupling or exotic detection schemes.
Externí odkaz:
http://arxiv.org/abs/2107.04707
Autor:
Klopfer, Brannon B., Koppell, Stewart A., Bowman, Adam J., Israel, Yonatan, Kasevich, Mark A.
We present the design and prototype of a switchable electron mirror, along with a technique for driving it with a flat-top pulse. We employ a general technique for electronic pulse-shaping, where high fidelity of the pulse shape is required but the c
Externí odkaz:
http://arxiv.org/abs/2012.02219
Autor:
Koppell, Stewart A., Mankos, Marian, Bowman, Adam J., Israel, Yonatan, Juffmann, Thomas, Klopfer, Brannon B., Kasevich, Mark A.
Multi-pass transmission electron microscopy (MPTEM) has been proposed as a way to reduce damage to radiation-sensitive materials. For the field of cryo-electron microscopy (cryo-EM), this would significantly reduce the number of projections needed to
Externí odkaz:
http://arxiv.org/abs/1904.11064
Publikováno v:
Nature Communications 10, 4561 (2019)
Nanosecond temporal resolution enables new methods for wide-field imaging like time-of-flight, gated detection, and fluorescence lifetime. The optical efficiency of existing approaches, however, presents challenges for low-light applications common t
Externí odkaz:
http://arxiv.org/abs/1812.06563
Autor:
Nimmrichter, Stefan, Chen, Chi-Fang, Klopfer, Brannon B., Kasevich, Mark A., Juffmann, Thomas
Quantum enhanced microscopy allows for measurements at high sensitivities and low damage. Recently, multi-pass microscopy was introduced as such a scheme, exploiting the sensitivity enhancement offered by multiple photon-sample interactions. Here we
Externí odkaz:
http://arxiv.org/abs/1704.05217
Autor:
Juffmann, Thomas, Koppell, Stewart A., Klopfer, Brannon B., Ophus, Colin, Glaeser, Robert, Kasevich, Mark A.
Feynman once asked physicists to build better electron microscopes to be able to watch biology at work. While electron microscopes can now provide atomic resolution, electron beam induced specimen damage precludes high resolution imaging of sensitive
Externí odkaz:
http://arxiv.org/abs/1612.04931