ISSN:
1432-0649
Keywords:
42.40
;
43.55.Lt
;
42.50
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The relationship between the temporal coherenceg (1) (τ) and laser parameters - the output relative intensity (I 1/I 2) and the frequency widthδϕ h of the longitudinal mode in a two-longitudinal-mode HeNe laser - is studied experimentally. The experimental results show that both the relative output intensity and the frequency width of the longitudinal mode have a great influence on the temporal coherenceg (1) (τ). Moreover, the spectral line-shape function of each longitudinal mode in a two-longitudinal mode HeNe laser is a Lorentzian function, with a frequency width of about 18.2 MHz. A model of the power spectrum with Gaussian amplitude distribution and equal frequency width of the longitudinal mode in a multi-longitudinal-mode gas laser is employed in the theoretical analysis. Good agreement between theory and experiment is obtained.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01112829
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