Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(Color online) (a) Schematic of the sample arm. (b) The spectral interference pattern and the unwrapped phase of the analytic signal with a mirror at the focus of the sample arm. (c) Image mapping the optical delay to the focal plane, showing the curvature of the coherence gate caused by scanning over an ~200 µm FOV. (d) FFT of the raw spectrum. (e) FFT after multiplying the spectrum by the conjugate of the measured spectral phase profile. The arrows indicate the focus depth.
