About: http://webisa.webdatacommons.org/194019536

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	L1, L2, L3 and L4 are lenses, Ch is a chopper, BS is a beam splitter, Pd1 and Pd2 are Si photodiodes for closed- and open-aperture Z-scan, respectively.
http://www.w3.org/ns/prov#wasQuotedFrom	osapublishing.org