Abstract
We present the first demonstration of real-time closed-loop control and deterministic tuning of an independently suspended Fabry-Perot optical cavity using digitally enhanced heterodyne interferometry, realizing a peak sensitivity of ∼10 pm/√ Hz over the 10-1000 Hz frequency band. The methods presented are readily extensible to multiple coupled cavities. As such, we anticipate that refinements of this technique may find application in future interferometric gravitational-wave detectors.
Original language | English |
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Pages (from-to) | 4952-4954 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 37 |
Issue number | 23 |
DOIs | |
Publication status | Published - 1 Dec 2012 |