Advanced Virgo mode-cleaner cavity being characterized at LAPP (June 2014)
![Advanced Virgo mode-cleaner cavity being characterized at LAPP (June 2014)](http://public.virgo-gw.eu/wp-content/grand-media/image/201406_AdVOMC_LAPP.png)
The output mode-cleaner cavity is a small monolithic optical cavity used to “clean” the laser beam going out of the interferometer: only the Gaussian mode of the beam, which contains the imprint of the gravitational waves, is transmitted by this cavity. This picture shows such a 6-cm long cavity being characterized at LAPP in June 2014.
Credits: The Virgo Collaboration/LAPP
Album: Instruments – Laser&Optics
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