Wang-Yau Cheng and Jow-Tsong Shy, "Wavelength standard at 543 nm and the corresponding 127I2 hyperfine transitions," J. Opt. Soc. Am. B 18, 363-369 (2001)
We have constructed two compact iodine-stabilized 543-nm He–Ne lasers and studied the corresponding hyperfine transitions. The frequency stability of our lasers reaches during a 30-s sampling time; and the resettability is less than 2 kHz. The frequency intervals of the hyperfine peaks were measured and the corresponding hyperfine constants were determined. The line width of each main line was measured. The properties of the line, which is suggested to serve as the wavelength standard at 543 nm, were investigated in detail for what is to our knowledge the first time.
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The standard uncertainty of to the last digits is given in parentheses. The uncertainties in other studies, which from 1 kHz to a few tens of kilohertz, are not shown. The average difference is the average of the absolute values of the differences with respect to our measured results.
Ref. 13, Danish Institute of Fundamental Metrology.
Ref. 13, Physikalisch-Technische Bundesanstalt.
Ref. 12.
Ref. 11.
Ref. 26.
Ref. 9.
Table 2
Fitted Hyperfine Coupling Constants for the and Transitionsa
The lower-level constants are the following: and Here, level–low level, and similarly for and Δδ.
Ref. 11.
Ref. 22.
Ref. 12.
Table 3
HWHM Linewidth of the Hyperfine Transitions at 4.12-Pa Vapor Pressurea
Hyperfine line
Quantum number F
13
9
14
12
17
10
11
107
103
106
108
111
104
105
109
110
107
105
106
108
109
107
Linewidth (MHz)
0.85
0.8
0.85
0.85
0.9
0.9
0.9
0.9
0.85
0.9
0.95
0.125
0.85
0.9
1.00
1.05
0.85
0.85
0.85
0.95
0.95
0.9
F is the quantum number that corresponds to the coupling angular momentum F (see text). The a lines are hyperfine transitions, and the b lines are hyperfine transitions.
The standard uncertainty of to the last digits is given in parentheses. The uncertainties in other studies, which from 1 kHz to a few tens of kilohertz, are not shown. The average difference is the average of the absolute values of the differences with respect to our measured results.
Ref. 13, Danish Institute of Fundamental Metrology.
Ref. 13, Physikalisch-Technische Bundesanstalt.
Ref. 12.
Ref. 11.
Ref. 26.
Ref. 9.
Table 2
Fitted Hyperfine Coupling Constants for the and Transitionsa
The lower-level constants are the following: and Here, level–low level, and similarly for and Δδ.
Ref. 11.
Ref. 22.
Ref. 12.
Table 3
HWHM Linewidth of the Hyperfine Transitions at 4.12-Pa Vapor Pressurea
Hyperfine line
Quantum number F
13
9
14
12
17
10
11
107
103
106
108
111
104
105
109
110
107
105
106
108
109
107
Linewidth (MHz)
0.85
0.8
0.85
0.85
0.9
0.9
0.9
0.9
0.85
0.9
0.95
0.125
0.85
0.9
1.00
1.05
0.85
0.85
0.85
0.95
0.95
0.9
F is the quantum number that corresponds to the coupling angular momentum F (see text). The a lines are hyperfine transitions, and the b lines are hyperfine transitions.