Laser and optical spectroscopies are used extensively
at UMBC to understand the dynamics of photoinitiated events that
occur on time scales ranging from femtoseconds to seconds. Our
laser laboratories are equipped with pulsed femtosecond, picosecond,
and several nanosecond laser/detection systems. In addition, Raman
and non-linear spectroscopies are used for biological imaging
and remote atmospheric detection. Time-resolved linear dichroism
is used to initiate and probe the earliest events of photochemical
reactions in efforts to understand and even predict reaction topochemistry
and rotational diffusion. Using high peak-power lasers, coherent,
back-scattered spectroscopy is being developed for remote detection
of atmospheric components. The dynamics of fluorescent polymers,
fabricated for environmental sensing applications, are studied
using time-correlated single-photon counting to understand the
mechanism of their response. Optical methods for non-invasive,
and early, detection of cancer and disease are being developed
using multi-photon spectroscopy. Finally computational chemistry
is used to understand and predict vibrational energy redistribution
in proteins, as well as to predict and model terahertz spectra.
Investigation of dynamic nature of enzymes and their macromolecular complexes in living cells
Time-Resolved Linear Dichroism
Application and development of optical spectroscopic techniques for non-invasive and minimally invasive chemical monitoring.
Reaction dynamics studied using nano and picosecond absorption and fluorescence spectroscopy. Mechanisms of photoinduced DNA and protein modification and polymer dynamics.