Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21114010l&link_type=abstract
American Astronomical Society, AAS Meeting #211, #140.10; Bulletin of the American Astronomical Society, Vol. 39, p.990
Astronomy and Astrophysics
Astronomy
Scientific paper
Laser frequency noise is one of the chief noise sources for interferometric gravitational wave detectors both on ground and in space. Pre-stabilization of the laser frequency prior to entering the interferometer is required to achieve the necessary sensitivities for gravitational wave detection. A common technique for such pre-stabilization is to use an external high- finesse optical cavity as a frequency reference. The RF modulation/demodulation technique known as Pound-Drever-Hall locking is typically used to produce a frequency discriminant from the cavity. This provides a series of stable lock points at fixed frequencies separated by the inverse round-trip time for light in the cavity. One limitation of this standard technique is that the absolute frequency of the stabilized laser cannot be freely adjusted. Such tunability is required when using the Pound-Drever-Hall technique as the first stage in a multi-stage stabilization scheme. Here we describe a class of modifications to the standard modulation/demodulation scheme that allow for the absolute frequency of the lock points to be continually adjusted over a finite range. These techniques do not require any modifications to the reference cavities themselves and only require minor changes to the standard Pound-Drever-Hall components. The measured stability and tunability of these techniques are presented and compared with results from standard stabilization techniques. We also emphasize the importance of such tunability for LISA.
Ira Thorpe James
Livas Jeffrey C.
Numata Kenji
No associations
LandOfFree
Tunable Frequency-stabilized Lasers for LISA does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Tunable Frequency-stabilized Lasers for LISA, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tunable Frequency-stabilized Lasers for LISA will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1482749