Characterization of 2 um Faraday Isolators
Presentation Type
Poster
Faculty Advisor
Rodica Martin
Access Type
Event
Start Date
26-4-2024 11:15 AM
End Date
26-4-2024 12:15 PM
Description
To further increase the detection sensitivity, future upgrades of the gravitational-wave (GW) detectors consider a change in the operating wavelength from 1064 nm to 2050 nm, which is promising for reducing thermal noise in the coatings of the mirrors acting as the test masses of the interferometer. One key device that directly affects the sensitivity of the GW detectors is a Faraday Isolator (FI). This device (a combination of optics and a magnet) uses the polarization of the laser beam to reject scatter and undesired laser light, to prevent it from creating scatter noise and contaminating the GW signal. We are characterizing a commercial Faraday isolator to understand its performance and limitations for operating in future upgrades of the gravitational-wave detectors, and are investigating Bi:YIG for its potential as magneto-optical element in these devices, including temperature tuning for in-situ optimization.
Characterization of 2 um Faraday Isolators
To further increase the detection sensitivity, future upgrades of the gravitational-wave (GW) detectors consider a change in the operating wavelength from 1064 nm to 2050 nm, which is promising for reducing thermal noise in the coatings of the mirrors acting as the test masses of the interferometer. One key device that directly affects the sensitivity of the GW detectors is a Faraday Isolator (FI). This device (a combination of optics and a magnet) uses the polarization of the laser beam to reject scatter and undesired laser light, to prevent it from creating scatter noise and contaminating the GW signal. We are characterizing a commercial Faraday isolator to understand its performance and limitations for operating in future upgrades of the gravitational-wave detectors, and are investigating Bi:YIG for its potential as magneto-optical element in these devices, including temperature tuning for in-situ optimization.