Signal Recycling Cavity Gouy Phase and Mode Matching
- Document #:
- CE-T2500015-v4
- Document type:
- T - Technical notes
Other Versions:
- Abstract:
- The most critical thermal lensing in a Dual-Recycled Fabry-Perot Michelson Interferometer (DRFPMI) happens at the input test masses (ITM). The high arm optical power leads to a significant heat deposition on the ITM, which induces a thermal lens in the ITM substrate, which affects the recycling cavities.
This note asks the question how the mode matching between the arm eigenmode and the Signal Recycling Cavity (SRC, or Signal Extraction Cavity SEC - old habits die hard) Eigenmode is affected by this thermal lens. It shows that the SRC Gouy phase has a huge impact on this coupling.
https://dcc.ligo.org/LIGO-T2500240
https://www.overleaf.com/project/686bc9ebee2967acda49ec46
- Files in Document:
-
- pdf (Signal_Recycling_Cavity_Gouy_Phase_and_Mode_Matching.pdf, 1.1 MB)
- presentation pptx (SRCGouy.pptx, 4.6 MB)
- Other Files:
- zip (Signal_Recycling_Cavity_Gouy_Phase_and_Mode_Matching.zip, 904.5 kB)
- Topics:
- Authors:
- Notes and Changes:
- Fixed some typos
- Related Documents:
- CE-T2500014: Thermal Lensing - Some Back-of-the-Envelope Rules