Extended Data Fig. 3: Sketch of experimental layout.
From: Photon bunching in high-harmonic emission controlled by quantum light
‘PBS’: Polarizing beam splitter, a combination of half-wave plate and thin-film polarizer; ‘Spectrometer’: Princeton Instruments IsoPlane 320, equipped with PI-MAX4 intensified camera; ‘OAP’: Off-Axis Parabola, f = 25 mm (Thorlabs MPD119-M01); ‘AGS’: 400 μm-thick, θ = 39 deg, φ = 45 deg, AR coated 1–2.6 μm on the front surface, AR 2.6–11 μm on the back surface. ‘Imaging system’ includes an InGaAs camera (Xenics Bobcat+ 320). All mirrors after the ZnO crystal are Al-coated vacuum ultraviolet mirrors (Acton coating #1900). Monitoring photodiodes for the mid-infrared and BSV beams are not shown.
