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.
Photothermal signals in M-mode scan. Phase derivatives of two consecutive M-scans (a) when the excitation laser is on and (b) after the laser is turned off. (c) Temporal profile of photothermal signal. Scale bars are 500 μm in tissue. Each profile obtained at a certain depth of the porcine liver (black arrow).
