@HopperLab

Ultrafast Control Lab led by @ThomasRHopper, based in @UCFChemistry Developing laser-based tools for materials and device (MAD) science!

 University of Central Florida
hopperlab.org/
Joined August 2018
  • Tweets18
  • Following57
  • Followers11
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HopperLab retweeted
Tom Hopper@ThomasRHopperSep 4
Using a novel electron pump–optical probe method, we uncovered a surprisingly strong #ultrafast optical response to ionizing radiation in #semiconductors, with potential for radiation detection and medical imaging. Thanks @SLAClab for covering our work: www6.slac.stanford.edu/news/…

Ultrafast electrons and lasers open possibilities for better imaging and sensing technologies |...

SLAC and Stanford scientists used ultrafast electrons and a laser to reveal an unexpectedly strong optical response to ionization, opening new possibilities for radiological imaging and sensing while...

slac.stanford.edu
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Sensors that detect radiation often pick up on the iconic “glow” - but does another signal come first? A SLAC/@Stanford University research team used ultrafast electrons & lasers with semiconductor samples to find out, leading to unexpected results: stanford.io/3UCxzNB
A high-energy electron excitation (orange) of a semiconductor (composed of atoms represented by purple and green spheres) induced an ultrafast nonlinear optical response that can be detected using a laser (blue). (Ella Maru Studio)

ALT A high-energy electron excitation (orange) of a semiconductor (composed of atoms represented by purple and green spheres) induced an ultrafast nonlinear optical response that can be detected using a laser (blue). (Ella Maru Studio)

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HopperLab retweeted
Tom Hopper@ThomasRHopperAug 21
Looking forward to co-organizing PCSMIXXV (conf. 14205) this week at #SPIEOpticsPhotonics, and presenting our work on #ultrafast #spectroscopy of carrier scattering, cooling & trapping in #2Dmaterials. Sun 23 Aug at 10:55AM, Conv. Ctr. Rm 9: spie.org/OP26P/conferencedet… @SPIEtweets
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HopperLab retweeted
Tom Hopper@ThomasRHopperJul 2
Replying to @HopperLab
@HopperLab has been awarded our 1st grant in the form of an @acsprf! Looking forward to developing ultrafast approaches for detecting/controlling fields at energized interfaces. Collabs on #2Dmaterials, #photocatalysts, #batteries etc welcome! cen.acs.org/acs-news/acs-app… via @cenmag

ACS Board approves 113 new PRF projects

The spring 2026 grants total $12,295,000 in research investment

cen.acs.org
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Dr. Tom Hopper has received an @AmerChemSociety Petroleum Research Fund (PRF) grant to push the boundaries of catalytic research! This award will support Dr. Hopper’s groundbreaking research project "All-Optical Field Modulation Spectroscopy of Energized Catalytic Interfaces."
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Pump, dump, probe SLAC researchers imaged a molecule undergoing a coherently controlled reaction in real time, for the 1st time. Using ultrafast X-rays from our X-ray laser, they captured how atoms move in a molecule excited & programmed by laser light: stanford.io/4vwcMJe
A colorful diagram illustrating a sequence of waveforms labeled as Probe, Dump, Pump leading to a Sample. This results in a cone-shaped Diffraction Pattern on a circular screen. Credit: Greg Stewart/SLAC

ALT A colorful diagram illustrating a sequence of waveforms labeled as Probe, Dump, Pump leading to a Sample. This results in a cone-shaped Diffraction Pattern on a circular screen. Credit: Greg Stewart/SLAC

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HopperLab retweeted
Tom Hopper@ThomasRHopperJun 25
By combining #coherentcontrol with #ultrafast X-ray imaging, we can use structural feedback as a handle for steering reactions with light. Grateful to Chris Patrick and the @SLAClab media team for covering our work in Phys Rev A www6.slac.stanford.edu/news/…

SLAC researchers ‘watch’ molecules steered by laser light | SLAC National Accelerator Laboratory

Using the powerful LCLS X-ray laser, researchers at SLAC have directly imaged for the first time how molecules rearrange during a chemical reaction controlled by light.

slac.stanford.edu
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New open access Article online: Strong ultrafast nonlinear optical response from megaelectronvolt electrons in semiconductors. go.nature.com/4uH0Gwu
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HopperLab retweeted
Tom Hopper@ThomasRHopperApr 20
Excited to contribute to a new @NaturePhotonics paper w/ @Diana_Jeong_PhD @StanfordRad @LindenbergLab: we flip UED at @SLAClab, using a MeV electron pump + vis probe to track #ultrafast radiation–matter interactions relevant to medical imaging: doi.org/10.1038/s41566-026-0… @doescience

Strong ultrafast nonlinear optical response from megaelectronvolt electrons in semiconductors

Nature Photonics - Nonlinear optical responses of semiconductors induced by 150-fs and 4.2-MeV electron pulses are investigated. Sub-10-ps bandgap modulations with intensities up to 24.5% are...

nature.com
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HopperLab retweeted
Tom Hopper@ThomasRHopperApr 8
Continuing my obsession with “pump–control–probe”, after years w/ Vis, IR & THz, we’ve now gone X-ray at #LCLS @SLAClab, enabling the first real-space + time imaging of coherently controlled molecular wavepackets @PhysRevA doi.org/10.1103/f5kj-bzx8 #Ultrafast #XFEL #CoherentControl
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Looking forward to #SPIEOpticsPhotonics this week! Come check out our work on #ultrafast #spectroscopy of hot carrier trapping in InP #quantumdots on Sun 3 Aug at 11:10AM, Conv. Ctr. Rm 14A: spie.org/opp/conferencedetai… @SPIEtweets
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#photochemistry #spectroscopy #energy researchers - please join us at the “Structures & Properties of Photoactive Materials” symposium @AmerChemSociety @Sermacs2025 Joint Regional Meeting!📅 Oct 26–29, 2025📍Orlando, FL📝 Abstracts due July 21, 2025🔗 sermacs2025.org/program.html
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#pumppushprobe strikes again! This time revealing that #ultrafast hot carrier trapping in InP #quantumdots hampers lasing despite high PLQY. A 9-institution collab spanning femto-to-microsecond timescales & single-QD to ensemble measurements. @NatureComms doi.org/10.1038/s41467-025-6…
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🚨@HopperLab is hiring! We seek a #postdoc strong in the ways of #ultrafast instrumentation. Must be willing to train Padawans. Strike down this form with all your expertise—and your journey to the Dark Side will be complete. forms.gle/5jX5pLCb2bX7H4hi8 #chempostdoc #AcademicTwitter
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Also presenting @AmerChemSociety #ACSSpring2025 this Sun, Mar 23! Join us at 4:50 pm, 33B (Convention Center) to see how @pulse_institute @SLAClab @HopperLab control and watch wavepackets wiggle in real space and time with pump-control-X-ray probe: acs.digitellinc.com/live/34/…
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Excited to present at @APSphysics #APSSummit25 this Thu, Mar 20! Join us at 10:24 am, 253B (Convention Center) to see how @pulse_institute @SLAClab @HopperLab control and watch wavepackets wiggle in real space and time with pump-control-X-ray probe : summit.aps.org/events/MAR-Q3…
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Excited to welcome our nee faculty member, Dr. @ThomasRHopper! At UCF Chemistry, Dr. Hopper is developing an ultra fast laser lab to advance material and device science at molecular and nanoscale level. sciences.ucf.edu/chemistry/p… Welcome! #UCF #faculty #chemistry #laser #materials

Tom Hopper - Chemistry

sciences.ucf.edu
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Reading Frankenstein ~30yrs ago sparked my love for science. That's why this Halloween, I'm excited to share my new role as an Asst. Prof. @UCFChemistry! Coming to life Jan '25, @HopperLab will create ultrafast control tools for materials & device (MAD) science #NewPI #FloridaMan
https://www.hopperlab.org/

ALT https://www.hopperlab.org/

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