aLIGO Beamsplitter coating angular acceptance based on as built wedges

Document #:

LIGO-T1100128-v1

Document type:

T - Technical notes

Abstract:

Mike Smith provides an analysis of the angular acceptance required of the Beamsplitter coating based on the as built wedges for CP and BS. These wedges came in considerably tighter than our specification, allowing us to provide a narrower acceptance angle for the Beamsplitter coating. This gives our coater a better chance of hitting 50% precisely.
Min:45.029 Max: 45.156

Files in Document:

• BS angle-as built wedges_T1100128-v1.pdf (1.0 MB)

Topics:

• Core Optics
• Final Design

Authors:

• GariLynn Billingsley
• Michael Smith

Keywords:

BS coating

Notes and Changes:

We intend to change the BS specification based on this analysis.

Related Documents:

• LIGO-E0900073: Advanced LIGO Beam Splitter (BS) Coating Specification