[MOS] Tomorrow 10/23 - Modern Optics and Spectroscopy Seminar with Amy S. Mullin (University of Maryland)

[Christine Brooks]

There will be a Modern Optics and Spectroscopy Seminar held tomorrow, October 23 at 12pm in 56-154

**Please note location**

Amy S. Mullin
Professor of Chemistry and Biochemistry, University of Maryland, College Park


“Dynamics of molecules in extreme rotational states made with an optical centrifuge”

Our research investigates the behavior of molecules in extreme rotational states made with an optical centrifuge.  The optical centrifuge is based on combining oppositely chirped pulses of light in order to trap and spin molecules to high angular frequencies.  The trapped molecules end up with angular frequencies of 45 THz and angular momentum vectors that are oriented in the lab frame.  In the case of CO2 and N2O, the centrifuged molecules have energies greater than 20,000 cm-1 and rotational quantum numbers greater than J=200. This energy regime is unexplored territory in the world of molecular physics. The relaxation dynamics of the molecules is interrogated with polarization-dependent high-resolution transient IR spectroscopy.  Results will be presented on orientational anisotropy decay, buffer gas collisions and new spectroscopy of high J molecules.

Refreshments will be served immediately following the seminar


Christine Brooks
Administrative Assistant
Massachusetts Institute of Technology
Department of Chemistry
77 Massachusetts Ave, 6-333
Cambridge, MA 02139
p: 617.253.7239
e: cbrooks at mit.edu<mailto:cbrooks at mit.edu>

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