Figure 1: Illustration of the SIM technique. | Nature Communications

Figure 1: Illustration of the SIM technique.

From: Spectral interferometric microscopy reveals absorption by individual optical nanoantennas from extinction phase

Figure 1

(a) Schematic of SIM. A tilted beam splitter introduces a vertical angle between two beam paths. Both beams propagate through the same microscope objective, appearing as two different focal spots separated by about 10 μm on the sample, one of which passes through the nanoparticle’s position. After the second objective, a prism and a cylindrical lens disperse the light onto a CCD camera. (b) An interferogram of wavelength (x axis) versus delay (y axis). (c) The system phase without a nanoparticle. The common path arrangement cancels most of the system’s group delay dispersion.

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