1 May 1996 Iodine-stabilized He-Ne laser at lambda = 633 nm: design and international comparison
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Abstract
A portable He-Ne laser at 633 nm, frequency stabilized by saturated absorption in 127/ 2 and built at the Institute for Atomic Physics, Institute for Physics and Technology of Radiation Devices is discussed. The construction of laser head and electronic servo control unit is described. The principle of the arrangement of the electronic circuits in the electronic unit and the tuning procedure of the chosen components are presented. Recent results of an international comparison held at Bureau International des Poids et Mesures (BIPM) was used to characterize the performance of the RO.2 laser against the BIPM4 laser. The mean laser frequency difference calculated on a set of 13 matrix determinations was: ?v=vRO.2-vBIPM4=-1.23 kHz with a repeatability of R(vRO.2)= ±6.8 kHz. The frequency stability expressed as relative Allan variance for sampling time, ?=102 s, was calculated from a 40,000-s time interval as ?(v)/v=1.78×10-12. All measurements were made under the restrictions of the Recommendation 3 (CI-1992) for the lasers suitable for the practical realization of the meter.
Gheorghe Popescu, Gheorghe Popescu, Jean-Marie Chartier, Jean-Marie Chartier, Anick Chartier, Anick Chartier, } "Iodine-stabilized He-Ne laser at lambda = 633 nm: design and international comparison," Optical Engineering 35(5), (1 May 1996). https://doi.org/10.1117/1.600666 . Submission:
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