Holometer

An aerial shot showing the location of the interferometers

We thoroughly wash all parts before assembling the vacuum system

Light baffles inserted into the interferometer arms reduce noise caused by scattered light

Installation of end mirror in the service vessel of the 40 meter prototype

A view of the end mirror Looking in the end of the 40 meter prototype

This overhead view shows the two vacuum vessels that will contain beam splitters for the two interferometers

Forty meters east of the beam splitter stations the East hut houses two end stations for the end mirrors

We insulate the arms to allow them to be baked and to minimize temperature excursions during operations

We tune the triangular cavity (highlighted in green) so it transmits only the fundamental gaussian mode from the input laser