Fig. 1. General wavevector diagram (left part) and schematic configuration of the AO cell (right part) for anisotropic (e→o) AO interaction in uniaxial birefringent crystal.

Fig. 2. Surface |Δkm(λ0,δθi1,δθi2)|=0 and the cross sections of the normalized transmission function T(λ0,δθi1,δθi2)/(ΓL)2 for (a) collinear and (b) noncollinear geometries of AO anisotropic diffraction.

Fig. 3. Map of the normalized transmission functions T(δθi1,δθi2)/(ΓL)2 in uniaxial crystal at λ0=λs=600  nm. The ranges of δθi1 and δθi2 in each subimage are ±10°. Two green rectangles mark the geometries shown in Fig. 2. Wide-aperture geometries are highlighted by the cyan arc.

Fig. 4. Experimental setup for measuring 2D transmission functions: MC, monochromator; D, diffuser plate; L1, L2, L3, lenses; P1, P2, polarizers; AOTF, acousto-optical tunable filter; C, camera.

Fig. 5. (a) Simulated (upper row) and experimental (lower row) images I(δθd1,δθd2) captured by the monochrome camera with the AOTF tuned to λs=600  nm (fs=85.5  MHz) for different central wavelengths λMC of the monochromator MC with 1 nm slit width. The ranges of δθd1 and δθd2 in all subimages are ±5°. (b) The dependence of normalized light intensity on λMC for points 1 and 2 shown in the right part of (a). The simulated and experimental images captured by the color camera with the AO cell tuned to λs=580  nm (fs=89.2  MHz): for (c) 1 nm and (d) 6.5 nm slit width.