Zavattini, The PVLAS Collaboration: Experimental Search For Anisotropy
- E. Zavattini, F. Brandi, +10 authors G. G. Ruoso
- Of The Phase Velocity Of Light In Vacuum Due To A…
We report on the frequency locking of a frequency doubled Nd:YAG laser to a 45 000 finesse, 87-cm-long, Fabry-Perot cavity using a modified form of the PoundDrever-Hall technique. Necessary signals, such as light phase modulation and frequency correction feedback, are fed direcly to the infrared pump laser. This is sufficient to achieve a stable locking of the 532 nm visible beam to the cavity, also showing that the doubling process does not degrade laser performances.