In an optical fiber, the maximum angle from the axis at which light can remain confined within the core for "total internal reflection." In contrast to the "acceptance angle," which is measured ...

One of the major types of materials analyzed using optical spectroscopy is thin films. Unlike some thin films that are self-supporting, ultra thin films are deposited on a substrate. These ultra thin ...

Raman scattering microscopy is a versatile tool for label-free imaging and molecular fingerprint analysis. Here, we provide the first demonstration that the selective collection of scattered signals ...