Extended Data Fig. 9: Detailed optical setup for TF stimulation.
From: Anatomically segregated basal ganglia pathways allow parallel behavioral modulation

The optical setup allows depth dependent optical illumination combined with TF. The main components are: P1: pockel cell (or any power modulator), S1: shutter, M1: piezo mirror, M3: small mirror (0.5” diameter), M2: galvo mirror, L1: Achromatic doublet (AC508-200-A-ML, f=200mm, diameter 2”, Thorlabs), L2: Aspheric condenser (ACL5040-A, f=40mm, diameter 50mm, Thorlabs), X1: XY translation cage mount + Z-axis translation mount (Thorlabs). M2 galvo mirror was used to change the incident angle onto the patchcord attached at the end of X1. M1 was used to correct for any misalignment for each angle.