781 articles – 3140 Notices  [english version]
HAL : hal-00720646, version 1

Fiche concise  Récupérer au format
Mirror surface studies for Advanced Virgo OMC
Di Gallo L.
Internal Scientific and Technical note (2012) - http://hal.archives-ouvertes.fr/hal-00720646
Physique/Physique/Instrumentations et Détecteurs
Mirror surface studies for Advanced Virgo OMC
Luc Di Gallo ()1
1 :  LAPP - Laboratoire d'Annecy le Vieux de Physique des Particules
CNRS : UMR5814 – IN2P3 – Université de Savoie
9 Chemin de Bellevue - BP 110 - 74941 Annecy-le-Vieux CEDEX - France
In this document we study mirror surface specifications for the Advanced Virgo Output Mode Cleaner (OMC). It is well known that flatness defects and micro-roughness on mirror surfaces affect the resonant mode in a cavity. Here we would like to determine the mirror surface specifications in order to have more than 99 % of transmission through the OMC for a perfect Gaussian input beam TEM00. To do this determination we will simulate the cavity with the code OSCAR (Degallaix 2010). Two kinds of losses will be characterised. The first one is the part of resonant beam which go out of mirrors, such losses are called sometimes "diffraction losses" or "clipping losses". The second, which can be the most important loss, is the reflection of the incident beam which does not match the imperfect cavity. More details on http://lucdigallo.free.fr/spip.php?article34&lang=en

Autres publications
Internal Scientific and Technical note

Optics – surface polishing – PSD – micro-roughness – surface defects
Plus de détails sur cette note sur: http://lucdigallo.free.fr
More details about this note on: http://lucdigallo.free.fr/?lang=en

Advanced VIRGO
Liste des fichiers attachés à ce document : 
notes_roughness_final2.pdf(1 MB)