Characterization of the LIGO 4km Fabry-Perot Cavities Via Their High-Frequency Dynamic Responses to Length and Laser Frequency Variations

Document #:

LIGO-P030044-v1

Document type:

P - Publications

Abstract:

Recent measurements at the LIGO Hanford Observatory have confirmed the predicted high-frequency dynamic response of km scale Fabry–Perot cavities to length and laser frequency variations. The dynamic response functions have been exploited to determine a number of cavity parameters including the cavity length and the resonance width. A new technique based on a variation of these measurements has been utilized to measure the interferometer arm cavity lengths with a precision of 80 μm. We present an overview of these measurements and discuss how the dynamic field responses could be used to measure the cavity g factors which are related to the mirror radii of curvature.

Files in Document:

• M_Rakhmanov_2004_Class._Quantum_Grav._21_S487.pdf (265.5 kB)

Topics:

• Document Migration from the old DCC

Authors:

• François Bondu
• O Debieu
• Malik Rakhmanov
• Richard Savage

Keywords:

Fabry-Perot Cavity

Notes and Changes:

Published version.

Referenced by:

• LIGO-E1500442: aLIGO, CAL, Publications