Optical Paths Lengths Through a Wedged Optic at Non-normal Incidence: The aLIGO Mode Cleaner

Document #:

LIGO-T1100030-v1

Document type:

T - Technical notes

Abstract:

This document provides a review of the geometry of thick, wedged, optics, using the aLIGO Mode Cleaner as an example. We obtain the optical path length between the AR surface and HR surface of MC1 (and MC3) to be \( \ell_{ef\!f} = 0.12259 \) m as the carrier beam enters (exits) the mode cleaner from ISM2 (on its way to SM1).

Files in Document:

• geometry_T1100030-v1.pdf (734.0 kB)

Topics:

• Modelling
• Input Optics
• Sensing and Control

Authors:

• Jeffrey Kissel

Keywords:

aLIGO MC MC1 MC2 Mode Cleaner Wedge Wedged Optics Optical Path Length

Related Documents:

• LIGO-E070085: Coated Substrate, ALIGO INPUT MODE CLEANER FLAT MIRROR (IMCF)
• LIGO-D070091: ALIGO INPUT MODE CLEANER FLAT MIRROR SUBSTRATE