Active sub-Rayleigh alignment of parallel or antiparallel laser beams
Optics Letters, Vol. 30, Issue 24, pp. 3323-3325 (2005)
http://dx.doi.org/10.1364/OL.30.003323
Acrobat PDF (274 KB)
Abstract
We measure and stabilize the relative angle of parallel and antiparallel laser beams to 5 nrad/Hz resolution by comparing the phases of radio frequency beat notes on a quadrant photodetector. The absolute accuracy is 5.1 and 2.1 µrad for antiparallel and parallel beams, respectively, which is more than 6 and 16 times below the Rayleigh criterion.
© 2005 Optical Society of America
OCIS Codes
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
ToC Category:
Instrumentation, Measurement, and Metrology
Citation
Holger Müller, Sheng-wey Chiow, Quan Long, Christoph Vo, and Steven Chu, "Active sub-Rayleigh alignment of parallel or antiparallel laser beams," Opt. Lett. 30, 3323-3325 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-24-3323
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