Abstract

We present a setup based on a low-vibration closed-cycle cryostat for the characterization of mirror coatings and for the direct measurement of Brownian thermal noise from room-temperature to 4 K. Using a dual frequency modulation scheme allows us to lock a laser to two eigenmodes of a high-finesse optical resonator simultaneously and to track the line splitting between the two modes. This facility will enable to investigate the temperature and power dependence of the birefringent line splitting and noise in AlGaAs/GaAs multilayer coatings across a broad temperature range.

Details

Title
Testing novel high-reflectivity mirror technologies from room-temperature to 4 K
Author
Kempkes, M; Legero, T; Sterr, U; Nicolodi, D
First page
012054
Publication year
2024
Publication date
Nov 2024
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3131845033
Copyright
Published under licence by IOP Publishing Ltd. This work is published under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.