Narrow-band coherent anti-stokes Raman signals from broad-band pulses.
By tailoring the phase of a 100 femtosecond probe pulse we are able to obtain a narrow-band coherent anti-Stokes Raman spectroscopy (CARS) resonant signal with a width of less than 15 cm(-1), which is an order of magnitude narrower than the CARS signal from a transform limited pulse. Thus, by measuring the spectrum of the CARS signal we are able to obtain a high-resolution energy level diagram of the probed sample in spite of the broad femtosecond pulse spectrum.
Oron
Dan
D
Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 76100, Israel.
Dudovich
Nirit
N
Yelin
Dvir
D
Silberberg
Yaron
Y