On 11/18/2017 12:16 PM, Attila Kinali wrote:
On Fri, 17 Nov 2017 17:54:51 -0800
Hal Murray <hmur...@megapathdsl.net> wrote:
LIGO only works for roughly the audio spectrum. At the low and high ends,
the noise goes up. Lots of people are working on how to build gear that will
work at other wavelengths.
I was wondering about those limits, when i saw the plots.
Though, is it really the time/frequency source that defines
the detection limit?
If your laser bounces 100000 times in a 4 km tunnel to detect things,
speed of light will limit the effective bandwidth.
Thermal noise plucking the silica fibre suspension creates a noise floor.
There is no cesium or H-maser at LIGO, they use GPS, we sure asked.
Cheers,
Magus
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