This shows the characteristic bullseye interference pattern created when light passes through a Fabry-Perot etalon. Now with dual-wavelength capability! The pattern consists of concentric bright and dark rings due to constructive and destructive interference of multiple reflected beams within the etalon cavity.
Controls: Adjust both wavelengths to see beautiful color mixing effects, control individual brightness levels, change the cavity thickness to control the number of rings, tilt the etalon vertically to shift the pattern, and modify the finesse to control ring sharpness.
Try this: Set wavelength 1 to red (~650 nm) and wavelength 2 to blue (~450 nm) to see how different wavelengths create different ring patterns that overlap and create stunning color combinations!
