DocumentCode
1519880
Title
Absolute frequency atlas of molecular I2 lines at 532 nm
Author
Ye, Jun ; Robertsson, Lennart ; Picard, Susanne ; Ma, Long-Sheng ; Hall, John L.
Author_Institution
Joint Inst. for Lab. Astrophys., Colorado Univ., Boulder, CO, USA
Volume
48
Issue
2
fYear
1999
fDate
4/1/1999 12:00:00 AM
Firstpage
544
Lastpage
549
Abstract
With the aid of two iodine spectrometers, we report for the first time the measurement of the hyperfine splittings of the P(54)32-0 and R(57)32-0 transitions near 532 nm. Within the tuning range of the frequency-doubled Nd:YAG laser, modulation transfer spectroscopy recovers nine relatively strong ro-vibrational transitions of 127 I2 molecules with excellent SNR. These transitions are now linked together with their absolute frequencies determined by measuring directly the frequency gaps between each line and the R(56)32-0:α10 component. This provides an attractive frequency reference network in this wavelength region
Keywords
frequency standards; hyperfine structure; iodine; modulation spectra; rotational-vibrational states; visible spectra; 532 nm; I2; SNR; absolute frequency measurement; frequency-doubled Nd:YAG laser; hyperfine splitting; iodine molecule; modulation transfer spectroscopy; ro-vibrational transition; Frequency measurement; Laser stability; Laser transitions; Laser tuning; Measurement standards; Metrology; NIST; Neodymium; Spectroscopy; Time measurement;
fLanguage
English
Journal_Title
Instrumentation and Measurement, IEEE Transactions on
Publisher
ieee
ISSN
0018-9456
Type
jour
DOI
10.1109/19.769654
Filename
769654
Link To Document