Doppler-free spectroscopy

Details Doppler-free spectroscopy Doppler-free spectroscopy

1989-06-30

1991-10-08

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

356314, 356300, G01J 342, G01N 2162

Patent

active

050549219

ABSTRACT:
A substantially Doppler-free spectrum of an element in a sputtered vapor is obtained by generating the sputtered vapor of the sample in a sputtering cell containing a rare gas and obtaining a saturated absorption spectrum for the vapor. The vapor is sputtered from a cathode including the sample and the pressure of the rare gas in the sputtering cell and the chopping frequency of a laser pump beam employed to obtain the saturated absorption spectrum are selected to reduce the number of detected velocity changing collisions in the cell to substantially eliminate any background Doppler-broadened component from the saturated absorption spectrum which is thereby a substantially Doppler-free spectrum.

REFERENCES:
patent: 4817101 (1989-03-01), Wyeth et al.

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