Author Archives: allisongroupadmin
Sergii’s Farewell Dinner
Sergii Chernov is leaving us soon to start a new position at PETRA III. It was great to get the whole group together, with both new students and seasoned veterans, for an evening out.
MRI Development Grant
In collaboration with the Liu group and the Laser Teaching Center at Stony Brook University, we will begin an exciting new five-year project to develop high-power frequency combs covering a wide swath of the electromagnetic spectrum, from the THz to … Continue reading
Rotationally-resolved 2DIR spectroscopy
Using the multi-comb ideas presented in our previous paper on cavity-enhanced 2DIR spectroscopy, and major recent advances in mid-IR and long-wave IR frequency combs, high-resolution 2DIR spectroscopy of gasses is poised to become a powerful method for multi-species trace gas … Continue reading
Momentum-Resolved Exciton Coupling in Monolayer WS2
We have now posted a paper regarding our results from time-resolved ARPES studies in monolayer tungsten disulfide: https://arxiv.org/abs/2203.02419 The momentum-space images recorded via time-of-flight momentum microscopy, like the one shown at left, enable detailed examination of the momentum and energy … Continue reading
Jin Bakalis Wins Poster Prize!
Graduate student Jin Bakalis won the prize for best poster at Chemistry Research Day with her poster titled: “Ultrafast Dynamics in Graphite/graphene probed with time-resolved momentum microscopy.” Here is a photo of Jin receiving the award from Dept. Chair Peter … Continue reading
Allison Group Re-united
It has been a long brutal year, but things are starting to get a little bit more normal. We were actually all in the same place together today for the first time in over a year to take the group … Continue reading
Grzegorz wins Marie Skłodowskiej-Curie Fellowship
Postdoc Grzegorz has been awarded a Marie Skłodowskiej-Curie fellowship from the European Commission. Congratulations! A press release can be found HERE. The Stony Brook CE-TAS spectrometer is in the Polish news!
HHG in PPLN waveguides
While non-perturbative high harmonic generation (HHG) has been a hot topic for decades, cascaded HHG is also a very rich problem and can have much higher efficiency. In collaboration with the Diddams group at NIST, we’ve investigated frequency comb generation … Continue reading
Broadband cavity-enhanced ultrafast spectroscopy
After getting all the systematics under control, we have written a paper on our broadband cavity-enhanced transient absorption spectrometer. This takes CE-TAS from a one-of demonstration to a real chemical physics tool. The paper is available on the arXiv here: … Continue reading
Grzegorz Returns
Grzegorz Kowzan has returned to our group now as a postdoc after completing is Ph. D. in Toruń. Welcome back!