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| Keywords: Frequency Comb (6283421330).jpg Stack of quartz optical 'cavities' -- precisely machined disks of solid quartz crystal -- for use in NIST's compact laser frequency comb Only one is actually used A low-power infrared laser produces light that travels in a loop inside one of the cavities Each cavity is 2 millimeters wide and shaped like a flat ellipse See also http //www nist gov/pml/div688/comb-102511 cfm www nist gov/pml/div688/comb-102511 cfm Credit S Papp/NIST Disclaimer Any mention of commercial products within NIST web pages is for information only; it does not imply recommendation or endorsement by NIST Use of NIST Information These World Wide Web pages are provided as a public service by the National Institute of Standards and Technology NIST With the exception of material marked as copyrighted information presented on these pages is considered public information and may be distributed or copied Use of appropriate byline/photo/image credits is requested https //www flickr com/photos/usnistgov/6283421330/ Frequency Comb 2011-02-02 16 31 https //www flickr com/people/63059536 N06 National Institute of Standards and Technology PD-USGov National Institute of Standards and Technology https //flickr com/photos/63059536 N06/6283421330 2016-09-07 02 12 07 United States Government Work Taken with Nikon D700 Optical cavity | ||||
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