Figure 5.
Fiber-amplifier-enhanced QEPAS signal repetitively recorded as a function of time for H2S concentration values ranging from 1 ppm to 50 ppm.
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.