Fig. 4
From: Widefield ultra-high-density optical breast tomography system supplementing x-ray mammography
Characterization of the frequency-domain (FD) subsystem at 685 nm (red) and 830 nm (blue), including (a) amplitude in log-scale versus incident optical power, revealing a noise equivalent power (NEP) of around 6 pW/\(\sqrt{Hz}\) at both wavelengths, and (b) phase versus incident optical power.
