Figure 1: Experimental setup.
From: Spatio-temporal focusing of an ultrafast pulse through a multiply scattering medium
The output of a laser oscillator (Osc) is divided by a beamsplitter (BS) to form an interferometer. One arm passes through a pulse shaper (PS) and is focused onto the sample (S) by lens L1. The output speckle field is imaged by lens L2 onto the slit of a two-dimensional spectrometer (2D-SM), which performs a measurement of the spectral intensity spatially resolved along the slit (upper inset). The reference arm is combined with an adjustable delay τ and angle. The spectral pulse shaper is a folded 4f line, and comprises a grating (G), cylindrical mirror (CM), plane mirror (M), folding mirror (FM) and spatial light modulator (SLM).
