Control Room
Electrical Engineering Lab
Laser and Vacuum Equipment Area (LVEA)
LVEA Infrasound Detector
LVEA Test Mass
Mass Storage Room Computers
Outside the Laser Enclosure
LIGO Hanford Beam Tube Display
Pre-Stabilized Laser Table 1
Pre-Stabilized Laser Table 2
Pre-Stabilized Laser Table 3
X Arm End Station
Y Arm End Station 1
Y Arm End Station 2

Pre-Stabilized Laser Table 2

In this panorama you see the pre-stabilized laser (PSL) table from the opposite side compared to the "Pre-Stabilized Laser Table 1" panorama. Very apparent in this view are the red hoses that carry chilled water to the laser to regulate the temperature of the lasing elements. To the left of the hoses sits the high power amplifer in the large gray case. At the level of the table to the left of the amplifier, note the red cable shield that encases two black cables. Zoom in for a closer view. These cables hold the optical fiber bundles that carry 808nm pump light from a room dozens of meters away. You can see two fiber connection ports at half-height on the gray case. Two more lie on the opposite side of the amplifier, out of view.


This is a 360 panoramic image. To look around, place the cursor over the image and hold down the left mouse button while moving the mouse. To zoom in, press the SHIFT key. To zoom out, press the CONTROL key.


On the left side of the table there appears a coil of yellow-jacketed optical fiber. Zoom in and you'll see a fiber entry port where a portion of the reference cavity beam enters the fiber. The light collected by the fiber is used as a frequency reference for LIGO's arm length stabilization system that brings the long arms of the detector into resonance apart from the interior of the interferometer.

© Zsolt Frei, Dale Ingram, William Katzman, Peter Pozsgai and the LIGO Scientific Collaboration, 2015