Inspecting LIGO's optics for contaminants
Prior to sealing up the chamber and pumping the vacuum system down, a LIGO optics technician inspects one of LIGO’s core optics (mirrors) by illuminating its surface with light at a glancing angle. It is critical to LIGO's operation that there is no contamination on any of its optical surfaces.
- December 14, 2015
- Caltech/MIT/LIGO Lab/(Matt Heintze)