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) Emission spectrum of the mode-locked ytterbium laser. (b) Autocorrelation trace of the compressed pulse at the sample measured by in situ autocorrelation. The measured pulse width was found to be 127 fs full-width half max. Assuming a sech2 pulse shape, the estimated pulse width is 81 fs. (c) Zoomed view of autocorrelation trace.
