Absolute frequency measurements for emission transitions of molecular iodine in the range of 1053 – 1068 nm

Journal Article · Mon Jul 01 04:00:00 EDT 2019 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QEL16890· OSTI ID:23004976

Nesterenko, M. I.; Ignatovich, S. M.; Kuznetsov, S. A.; Matyugin, Yu. A.

Results of high-precision frequency measurements are presented for certain components of the {sup 127}I{sub 2} hyperfine structure, which correspond to emission transitions of the B – X band in the range of 1053 – 1068 nm. The frequencies are measured by using a femtosecond optical frequency synthesiser based on a Ti:sapphire laser. The hyperfine structure is resolved by the method of three-level laser spectroscopy. The frequency-doubled cw Nd : YAG laser is used as an excitation radiation source, and the probe radiation in the range of 1050 – 1070 nm is generated by an external-cavity diode laser. The frequencies of both lasers are simultaneously locked to those of two adjacent hyperfine structure components of iodine lines, which have a common upper level. Correspondingly, the frequency of the Nd : YAG laser is locked to the frequency of the absorption transition component, and the diode laser frequency – to the frequency of the emission transition component. The radiation frequency of the diode laser ‘locked’ in this way is measured. Frequencies of 18 hyperfine structure components for six emission lines corresponding to the bands (32 – 54) and (32 – 53) are measured. The relative uncertainty of the measurement is 8 × 10{sup –10}. (paper)

• OSTI ID: 23004976
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 7 Vol. 49; ISSN 1063-7818; ISSN QUELEZ
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
EMISSION
EXCITATION
FREQUENCY MEASUREMENT
HYPERFINE STRUCTURE
IODINE
LASER CAVITIES
LASER SPECTROSCOPY
NEODYMIUM LASERS
RADIATION SOURCES
SAPPHIRE