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.
Second harmonic generation (SHG) response. (A) Bright-field transmission image of a crystal fragment. (B) A scan of the SHG signal from an area of a crystal fragment, marked approximately by the red box; the patchy nature of the SHG signal may indicate the ferroelectric domains. The color bar is in photon counts per second (CPS). (C) A polar plot of the SHG signal from the marked point in B, which reveals a dipolar-like pattern from CPS vs. polarization angle of the excitation laser.
