We describe a setup based on Michelson interferometry for coherent measurements of the backscattered light from a low roughness optical surface under test. Special data processing was developed for the extraction of the useful signal from the various stray contributions to the coherent signal. We achieve coherent detection of light scattered by a mirror down to -130 dB in optical power. We characterize the dependence of the backscattered light with spot position and incidence angle. Results of cross-polarization scattering coherent measurements and preliminary results of dust deposition experiment are presented here. This work represents the first step in the experimental evaluation of the coherent perturbation induced by the scattered light in the space gravitational wave detector of the LISA mission.

Study of the coherent perturbation of a Michelson interferometer due to the return from a scattering surface / Khodnevych, Vitalii; Di Pace, Sibilla; Vinet, Jean-Yves; Dinu-Jaeger, Nicoleta; Lintz, Michel. - 11180:(2018), p. 280. ((Intervento presentato al convegno International Conference on Space Optics — ICSO 2018 tenutosi a Chania, Greece [10.1117/12.2536200].

Study of the coherent perturbation of a Michelson interferometer due to the return from a scattering surface

Di Pace, Sibilla
Secondo
Investigation
;
2018

Abstract

We describe a setup based on Michelson interferometry for coherent measurements of the backscattered light from a low roughness optical surface under test. Special data processing was developed for the extraction of the useful signal from the various stray contributions to the coherent signal. We achieve coherent detection of light scattered by a mirror down to -130 dB in optical power. We characterize the dependence of the backscattered light with spot position and incidence angle. Results of cross-polarization scattering coherent measurements and preliminary results of dust deposition experiment are presented here. This work represents the first step in the experimental evaluation of the coherent perturbation induced by the scattered light in the space gravitational wave detector of the LISA mission.
9781510630772
9781510630789
File allegati a questo prodotto
File Dimensione Formato  
DiPace_Michelson-interferometer_2018.pdf

accesso aperto

Note: Paper Pubblicato
Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Creative commons
Dimensione 1.74 MB
Formato Adobe PDF
1.74 MB Adobe PDF Visualizza/Apri PDF

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1655695
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 1
social impact