A position-sensitive detector for the advanced LIGO suspensions

N. Lockerbie

A position-sensitive detector for the advanced LIGO suspensions

Research output: Contribution to journal › Article › peer-review

Abstract

A simple optical displacement sensor consisting of an infrared LED source, a photodiode detector, and an occluding 'flag', has been investigated for potential use in the Advanced LIGO gravitational wave detectors. A number of different commercially available LEDs and photodiodes were tried in the displacement sensor, and an optimal pair was found. A surprising geometrical effect was noted which allowed the residual noise level to be reduced at low frequencies, permitting a displacement sensitivity of ~10-10 m/√Hz to be attained at and above frequencies in the region of 2 Hz.

Original language	English
Journal	Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Publication status	Unpublished - 2006

Keywords

optical
displacement sensor
LIGO suspensions
gravity
nanoscience
astrophysics

Cite this

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title = "A position-sensitive detector for the advanced LIGO suspensions",

abstract = "A simple optical displacement sensor consisting of an infrared LED source, a photodiode detector, and an occluding 'flag', has been investigated for potential use in the Advanced LIGO gravitational wave detectors. A number of different commercially available LEDs and photodiodes were tried in the displacement sensor, and an optimal pair was found. A surprising geometrical effect was noted which allowed the residual noise level to be reduced at low frequencies, permitting a displacement sensitivity of ~10-10 m/√Hz to be attained at and above frequencies in the region of 2 Hz.",

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author = "N. Lockerbie",

year = "2006",

language = "English",

journal = "Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms ",

issn = "0168-583X",

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T1 - A position-sensitive detector for the advanced LIGO suspensions

AU - Lockerbie, N.

PY - 2006

Y1 - 2006

N2 - A simple optical displacement sensor consisting of an infrared LED source, a photodiode detector, and an occluding 'flag', has been investigated for potential use in the Advanced LIGO gravitational wave detectors. A number of different commercially available LEDs and photodiodes were tried in the displacement sensor, and an optimal pair was found. A surprising geometrical effect was noted which allowed the residual noise level to be reduced at low frequencies, permitting a displacement sensitivity of ~10-10 m/√Hz to be attained at and above frequencies in the region of 2 Hz.

AB - A simple optical displacement sensor consisting of an infrared LED source, a photodiode detector, and an occluding 'flag', has been investigated for potential use in the Advanced LIGO gravitational wave detectors. A number of different commercially available LEDs and photodiodes were tried in the displacement sensor, and an optimal pair was found. A surprising geometrical effect was noted which allowed the residual noise level to be reduced at low frequencies, permitting a displacement sensitivity of ~10-10 m/√Hz to be attained at and above frequencies in the region of 2 Hz.

KW - optical

KW - displacement sensor

KW - LIGO suspensions

KW - gravity

KW - nanoscience

KW - astrophysics

UR - http://www.ligo.org/pdf_public/lockerbie.pdf

M3 - Article

SN - 0168-583X

JO - Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

ER -

A position-sensitive detector for the advanced LIGO suspensions

Abstract

Keywords

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