Optical setup for multicolor two-photon microscopy
DC: dichroic mirror; NDD: non-descanned detector; OPO: optical parametric oscillator.
1: Dichroic mirror used to collect fluorescent photons on five non-descanned detectors. Excitatory infrared photons pass through the mirror whereas fluorescence photons are reflected. This mirror must be removed to collect photons in descanned mode.
2: Dichroic mirror used to collect fluorescent photons on a spectral chip in descanned mode. Modified from (Ricard and Debarbieux 2014).