Progress toward absolute frequency measurements of the 127I2-stabilized Nd:YAG laser at 563.2 THz/532 nm

F. Ducos, Y. Hadjar, G. D. Rovera, Jean Jacques Zondy, O. Acef

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Progress on the development of a frequency chain devoted to the absolute frequency measurement of 127I2-stabilized lasers around 563.2 THz/532 nm is reported. The aim of this work is the improvement of the accuracy-by at least one order of magnitude-of the absolute frequency of this standard. The scheme is based on the frequency combination of two well-known optical frequency standards, namely a CO2 laser stabilized on OsO4, and a 778-nm diode laser stabilized on Rb measured, at BNM-LPTF, against a cesium primary standard with 2 × 10-13 and 2 × 10-12 relative uncertainty respectively. This last value gives the ultimate accuracy of the reported chain.

Original languageEnglish
Pages (from-to)539-542
Number of pages4
JournalIEEE Transactions on Instrumentation and Measurement
Issue number2
Publication statusPublished - Apr 1 2001
Externally publishedYes


  • Laser measurements
  • Laser stability
  • Neodynium:YAG lasers

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering

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