Excited state atomic line filters

Details Excited state atomic line filters Excited state atomic line filters

2006-06-06

2006-06-06

Harvey, Minsun Oh (Department: 2828)

Coherent light generators

Particular active media

Gas

C372S032000

Reexamination Certificate

active

07058110

ABSTRACT:
An excited state atomic line filter. The present invention solves the problem of lack of ground state resonant lines in at wavelengths substantially longer than those of visible light. Atomic line filters of the Faraday or Voigt crossed polarizer type are provided in which alkali metal atomic vapor in a vapor cell is excited with a pump beam to an intermediate excited state where a resonant absorption line, at a desired wavelength, is available. A magnetic field is applied to the cell producing a polarization rotation for polarized light at wavelengths near the resonant absorption lines. Thus all light is blocked by the cross polarizers except light near one of the spaced apart resonant lines. However, the polarization of light at certain wavelengths near the resonant is rotated in the cell and therefore passes through the output polarizer.

REFERENCES:
patent: 5731585 (1998-03-01), Menders et al.
patent: 6009111 (1999-12-01), Corwin et al.

Affiliated with

Also associated with

Rating

Excited state atomic line filters does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Excited state atomic line filters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Excited state atomic line filters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3690452