Alexander

• PhD Physics (Montana State University, Bozeman);
• MS Physics (Montana State University);
• BS Physics (Kazan State University, Kazan, Russia).

My scientific interests cover an intersecting area of nonlinear optics, ultrafast laser spectroscopy, physical chemistry and quantum optics where a combination of diverse experimental methods can be employed together to obtain new insights about complex physical and biological systems.

The aim of the current research project is to advance methods of two-photon absorption (TPA) measurements with entangled (quantum) light sources.  Entangled two-photon absorption (eTPA) has a striking physical property: in contrast to the (classical) TPA, eTPA is scaled linearly with the excitation. Determination of eTPA cross sections in molecular systems is a challenging yet highly intriguing experimental task. Such measurements are sensitive to a variety of experimental parameters that typically hard to characterize and keep under control. To collect comprehensive eTPA data it is, however, a prerequisite to perform the measurements in a fully quantitative manner. The experimentally derived eTPA cross section values are of high interest. Available eTPA data would help to shed some new light on the nature of the nonclassical light – matter interactions on molecular scales. Advancing the eTPA measurements is also necessary to promote new multiphoton imaging and microscopy methods. Discovering molecules with improved eTPA properties will enable better excitation efficiencies under lower photon fluxes (compared to traditional multiphoton absorption techniques). That would provide a deep light penetration into biological tissues without a need to use intense laser excitations while preserving a tight spatial confinement for a high resolution.