Multi-dimensional laser spectroscopy of exciton-polaritons with spatial   light modulators
  We describe an experimental system that allows one to easily access the dispersion curve of exciton-polaritons in a microcavity. Our approach is based on two spatial light modulators (SLM), one for changing the excitation angles (momenta), and the other for tuning the excitation wavelength. We show that with this setup, an arbitrary number of states can be excited accurately and that re-configuration of the excitation scheme can be done at high speed. 
P. Mai, B. Pressl, M. Sassermann, Z. V\"or\"os, G. Weihs, C.   Schneider, A. L\"offler, S. H\"ofling, A. Forchel
cond-mat.mes-hall cond-mat.quant-gas