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Updated: Aug 18, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
Optical frequency measurements with the global positioning system: tests with an iodine-stabilized He-Ne laser
Richard W Fox1, Scott A Diddams, Albrecht Bartels
1National Institute of Standards and Technology, Boulder, Colorado 80305, USA. richard.fox@nist.gov
Abstract:
Global positioning system- (GPS-) referenced optical frequency combs based on mode-locked lasers offer calibrations for length metrology traceable to international length standards through the SI second and the speed of light. The absolute frequency of an iodine-stabilized He-Ne laser [127I2 R(127) 11-5 f component] was measured with a femtosecond comb referenced to a multichannel GPS timing receiver. The expected performance and limitations of GPS-referenced comb measurements are discussed.

