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.
(A) Absorption spectra of the molecules studied. (B) Experimental layout of femtosecond transient absorption apparatus. OPA, optical parametric amplifier; F, optical filters; P, prism polarizers; λ/2, half-wave plate; L, lens; PD, photodiode; S, sample cell.
