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Lock acquisition studies for advanced interferometers

Miyakawa, O. and Yamamoto, H. (2008) Lock acquisition studies for advanced interferometers. Journal of Physics: Conference Series, 122 . 012024. ISSN 1742-6596. doi:10.1088/1742-6596/122/1/012024. https://resolver.caltech.edu/CaltechAUTHORS:20090430-125935842

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Abstract

This document describes some results of time domain simulation for a Fabry-Perot cavity with Advanced LIGO parameters. Future interferometer will employ a high power laser and high finesse cavities. Lock acquisition of arm cavity will be more difficult due to the optical instabilities which are caused by very high power inside the cavity. According to this simulation, the arm cavity should be locked with very low power, and additional hard/software techniques will be needed to establish the first fringe lock. In this paper, possibility of using a new algorithm called 'Guidelock' and a suspension point interferometer are discussed. After lock is acquired, alignment controls must be engaged before increasing the power. This simulation predicts that alignment optical instabilities show up due to a shift of high power beam axis, and they can be stabilized by proper alignment controls.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1088/1742-6596/122/1/012024DOIUNSPECIFIED
http://www.iop.org/EJ/abstract/1742-6596/122/1/012024/PublisherUNSPECIFIED
Additional Information:© 2008 IOP Publishing Ltd. This work is supported by the National Science Foundation cooperative agreement PHY0107417. This document has been assigned LIGO Laboratory document number LIGO-P070141-00-Z. We thank the many members of the LIGO Laboratory, the LIGO Scientific Collaboration.
Funders:
Funding AgencyGrant Number
NSFPHY0107417
Subject Keywords:astronomical instruments; astronomy computing; Fabry-Perot interferometers
DOI:10.1088/1742-6596/122/1/012024
Record Number:CaltechAUTHORS:20090430-125935842
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20090430-125935842
Official Citation:Lock acquisition studies for advanced interferometers O Miyakawa and H Yamamoto 2008 J. Phys.: Conf. Ser. 122 012024 (6pp) doi: 10.1088/1742-6596/122/1/012024
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:14123
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:11 Aug 2009 18:09
Last Modified:08 Nov 2021 22:43

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