Title: Light stabilization for an optically excitable atomic medium
Application Number: 200410068659 Application Date: 2004.09.03
Publication Number: 1591243 Publication Date: 2005.03.09
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G04F5/14,G04F5/04,H05B41/36
Applicant(s) Name: America Xunteng Co., Ltd. Address:
Inventor(s) Name: Deng Jinquan, Crockett Jeff D.
Attorney & Agent: zou guangxin wang zhongzhong
Abstract:
     In an apparatus using optically excited atomic media, such as an atomic frequency standard, a source providing a controlled emission of light for exciting the D1 and/or D2 resonance lines of an alkali gas, such as rubidium or cesium, is controlled by an output generated by digital electronics from the light intensity signal of a light sensor for light transmitted by the alkali gas, an output for representing ambient temperature, and a light intensity-ambient temperature algorithm to substantially eliminate changes in light intensity due to light source aging for the purpose of reducing changes in temperature sensitivity of the apparatus as a function of time and the light-shift contribution to the frequency aging of the standard.
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