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- I've gone to a number of LIGO lectures, and picked up some fun documentation
- 1st-GW150914.pdf - Was Einstein right about strong gravity? Using Gravitational Waves ...
- 2nd-GW151226.pdf - GW151226: Observation of Gravitational Waves ...
- ObservationGW.pdf - General, Observation of Gravitational Waves ...
- Quantum Enhanced LIGO Detector Sets New Sensitivity Record
- Stretched.pdf - If light waves are stretched by gravitational waves, how ...
- “100 Years of Gravitational Waves: The Observation of a Binary Black Hole Collision" - Rainer Weiss, (MIT) Sept 20, 2017
- Sackler Lecture: Exploration of the Universe with Gravitational Waves - Rainer Weiss, (MIT) Feb 15, 2018 - he stresses thinking of these as phase modulated side bands at the frequency of the gravitational wave.
- Financing, Organization
- LIGO Richard Isaacson - NSF - long term funding, Marcel Bardon boss,
"Detecting gravitational waves takes a team and long-game perspective"
- Frequency Response, and low noise frequencies
- laser - why this frequency
- Uses 1064 nm light from a Nd:YAG laser.
- stabilization of laser
- The Pound–Drever–Hall (PDH) technique is a widely used and powerful approach for stabilizing the frequency of light emitted by a laser by means of locking to a stable cavity.
- Laser Frequency and intensity Stabilization for Advanced LIGO, Evan Hall (local copy)
- LIGO's Laser
- squeezed light
- Squeezed coherent state Wikipedia
- Squeezed states of light - RP Photonics
- Squeezed light - Vladimir Braginsky - variation of radiation pressure on the mirror variation diffraction pattern - pair of photons out of phase ... something
A memorial to Vladimir Braginsky, who among other things, searched for "underwater rocks" that might limit LIGO.
- GEO600 has been improving the science and art of squeezed light as part of their research to lower noise in interferometers.
- A 1997 paper in Nature Measurement of the quantum states of squeezed light
- LIGO Techie sites
- Observing environment and "Veto" intervals of time
- Transverse waves
- Test masses and Suspensions
- "Mirrors That Hang on Glass Threads" video
- "Active vibration isolation using a Suspension Point Interferometer" - .pdf - 2006
- "Active vibration isolation using a Suspension Point Interferometer" - slides of lecture - 2004
- Ultimate limits of Gravitational Wave detection on earth, turbulent air masses, ...
- Bury deep as in Japan ?
- Versions of Gravitational Wave detectors
- Weber bar aluminum "bar" with strain detectors glued on it
- Current status
The two LIGO sites were shut down (October 2017) for the squeezed light upgrade I don't understand, And ?other things ... Hope they return to service late 2018.
That's all for now folks -
Started March 2018
Updated through April 2018
Notes from Ray Weiss's lecture
this is just like the Heisenberg microscope that you learned about in quantum mechanics, but not with an electron, but with a 40 Kg Test Mass.