Robert K. Murawski

Assistant Professor of Physics

Physics Department

Drew University

Madison , NJ 07940

Office: Hall of Sciences, Rm. 200: Phone 973-408-3834

rmurawsk@drew.edu

Assistant Professor of Physics

Physics Department

Drew University

Office: Hall of Sciences, Rm. 200: Phone 973-408-3834

rmurawsk@drew.edu

Research Interests:

i)Coherent Anti-Stokes Raman Scattering (CARS) of molecules

ii) Quantum Chemistry and Molecular Dynamics

iii) Dimensional Scaling Analysis in Atomic and Chemical Physics

iv) Non-perturbative energy calculations of strongly correlated systems

v) Quantum Cascade Lasers

vi) Chaos and nonlinear dynamics

vii) Celluar Automatons

i) Coherent Anti-Stokes Raman Scattering (CARS) of molecules

Level diagram of the CARS process. Two femtosecond laser pulses, pump and Stokes, are used to prepare the molecular vibrational coherence. A third pulse, the probe, is scattered off the created coherence resulting in a new forth field, CARS, which is frequency shifted from the probe by ± the vibrational frequency.

The figures were made with VMD.

An interesting spectrogram from Cesium
dimers.

ii) Quantum Chemistry and Molecular Dynamics

The Raman intensities were calculated with the GAMESS software package.

Here is a movie showing the mixing of water molecules with methanol molecules calculated with GROMACS . Using computer simulations, one can calculate interesting properties of the mixture such as the radial distribution function which is shown here

iii) Dimensional Scaling Analysis in Atomic and Chemical Physics

iv) Non-perturbative energy calculations of strongly correlated systems

v) Quantum Cascade Lasers (QCL)

Title of dissertation:

Optoelectronic properties of Type I InGaAs Quantum Cascade Lasers with Applications to Optical Modulation

Stevens Institute of Technology, May 2004.

vi) Chaos and nonlinear dynamics

vii) Cellular Automatons

In a cellular automaton, a grid of N x M cells is given some initial state. The next iteration of the grid is given by some

rule which depends on the previous state. Shown below is an example of a cellular automaton. Each cell can have a

value between 0 and 63. To update the cells, we can define a rule for Cell

Cell

In this example, a grid of a 100 x 100 cells is given the initial conditions that all cells are zero except for a square of

9 cells(in the middle of the grid) which are given the value of C0. After 45 iterations, I get the resulting figures.

viii) Miscellaneous images

A section of the Mandelbrot set.

A stereogram of the same section of the Mandelbrot set made

with Stereograph for Linux.