Non-collinear optical parametric amplifier for time-resolved broadband picosecond CARS


  • This article is part of the special issue of the Journal of Raman Spectroscopy entitled “European Conference on Nonlinear Optical Spectroscopy (ECONOS 2013)” edited by Julian Moger and Peter Radi.


We demonstrate generation of broadband high-intensity picosecond pulses using a non-collinear optical parametric amplifier, seeded with a broadband cavity-less dye laser and pumped using the second harmonic of a picosecond Nd:YAG laser. With appropriate choice of the pump-seed non-collinearity angle, we observed energy conversion from the pump to the signal wave of around 15%, with the bandwidth of the amplified radiation around 445 cm−1 (20.7 nm) centered around 680 nm. An energy of 1.2 mJ per pulse of duration around 26 ps has been achieved. A light source with such parameters could be suitable for use in time-resolved broadband picosecond Coherent anti-Stokes Raman scattering. Copyright © 2014 John Wiley & Sons, Ltd.