Advanced LIGO subsystems
are the organizational units of the overall project. Follow the links below to view the mission and progress of each subsystem.

Auxiliary Optics Core Optics
 
Data Acquisition Data and
Computing
Systems
 
Facilities
Modifications
Input Optics
 
Interferometer
Control
Pre-Stabilized
Laser
 
Seismic
Isolation
Suspensions

Subsystem: Input Optics

The Advanced LIGO Input Optics (IO) subsystem conditions and matches the light from the Pre-Stabilized laser to the Core Optics, applying phase modulation, and reducing the frequency, intensity, and geometric fluctuations in the process. The design requirements for the Advanced LIGO Input Optics Subsystem include the requirements for the RF modulation of the light, acquisition and operation of the mode cleaner, mode matching of the light to the interferometer, and beam steering into the interferometer. The University of Florida will provide the IO subsystem. The scope of the IO includes the following tasks and hardware:

[io]
      Working in HAM 3

[io]
    HAM 3 from the beam splitter

[io]
  HAM 4 installation

[io]
      HAM auxiliary suspensions

[io]
    HAM 2 optical table

[io]
  Power recycling mirror 3 in HAM 2

[io]
      HAM 2 optical table

[io]
    HAM 2 optical table

[io]
  Faraday awaiting final install

[io]
      Mode cleaner mirror 2

[io]
    Mode cleaner mirror 2

[io]
  Power recycling optic 3

[io]
      TGG crystal for Faraday isolator

[io]
    Faraday isolator magnets

[io]
  Faraday isolator before installation

[io]
      IO table in HAM2

[io]
    Mode cleaner optic suspension

[io]
  aLIGO Faraday isolator prep

[io]
      Polished mode cleaner mirrors

[io]
    Enhanced LIGO Faraday Isolator

[io]
  Engravings for small optics

Additional Input Optics Photos

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