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Title: The advanced LIGO input optics

The advanced LIGO gravitational wave detectors are nearing their design sensitivity and should begin taking meaningful astrophysical data in the fall of 2015. These resonant optical interferometers will have unprecedented sensitivity to the strains caused by passing gravitational waves. The input optics play a significant part in allowing these devices to reach such sensitivities. Residing between the pre-stabilized laser and the main interferometer, the input optics subsystem is tasked with preparing the laser beam for interferometry at the sub-attometer level while operating at continuous wave input power levels ranging from 100 mW to 150 W. These extreme operating conditions required every major component to be custom designed. These designs draw heavily on the experience and understanding gained during the operation of Initial LIGO and Enhanced LIGO. In this article, we report on how the components of the input optics were designed to meet their stringent requirements and present measurements showing how well they have lived up to their design.
Authors:
; ; ; ; ; ; ; ; ; ; ;  [1] ; ; ;  [2] ; ;  [3] ; ;  [4] ;  [5] more »; « less
  1. University of Florida, Gainesville, Florida 32611 (United States)
  2. Louisiana State University, Baton Rouge, Louisiana 70803 (United States)
  3. LIGO Livingston Observatory, Livingston, Louisiana 70754 (United States)
  4. LIGO Hanford Observatory, Richland, Washington 99352 (United States)
  5. University of Adelaide, Adelaide, SA 5005 (Australia)
Publication Date:
OSTI Identifier:
22482828
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 87; Journal Issue: 1; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ASTROPHYSICS; BEAMS; DESIGN; EQUIPMENT; GRAVITATIONAL WAVE DETECTORS; GRAVITATIONAL WAVES; INTERFEROMETERS; INTERFEROMETRY; LASERS; OPTICS; PETROLEUM RESIDUES; SENSITIVITY