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Physical Review Letters

Microwave Emission from an Optically Pumped Atomic System

Vernon E. Derr, J. J. Gallagher, R. E. Johnson, A. P. Sheppard

Published May 15, 1961• 0 citations
Publisher

Abstract

The calculation giving an estimate of the line- width is incorrect, and the paragraph beginning at the bottom of page 316, "Second, an estimate of the linewidth may be made... , " should be de- leted from the article.On the basis of this ex- periment alone, no estimate of the linewidth can be made.
DOI
10.1103/physrevlett.6.572

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INSTRUCTIONS TO AUTHORS An abstract (maximum 1 page) is required for each platform presentation or poster presentation. Submit the abstract for your presentation as soon as possible to env-abstract@AASci.org. Abstract Format. Abstracts are to be prepared using standard PC-based MS Word software. Abstracts must be in English and cannot exceed one page. Use an 11-point serif font (e.g. Times New Roman) and leave 1-inch (2.5-cm) margins left, right, top, and bottom. Center the title (maximum 15 words, bold type) at the top of the page. Leave a blank line before beginning the author list, which also is to be centered. If several authors are from one organization, save space and make the list easier to read by grouping authors so that the organization need be typed only once. After each author or group of authors, use parentheses to enclose their affiliation employer (first level only omit division, department, etc.), city, state/province (if applicable) and country. Bold and italicize the name of the presenting author. Leave a blank line after the authors and then begin the text, typing it single-spaced and justifying only the left margin. Leave one blank line between paragraphs; do not indent paragraphs. Abstracts should be written in a letter-only manner. Do not use sub-title, figure, table and any non-letter content. Remove citation list, special symbol, header and footer. Email address of the corresponding/presenting author is to be listed (see the example below).Format. Abstracts are to be prepared using standard PC-based MS Word software. Abstracts must be in English and cannot exceed one page. Use an 11-point serif font (e.g. Times New Roman) and leave 1-inch (2.5-cm) margins left, right, top, and bottom. Center the title (maximum 15 words, bold type) at the top of the page. Leave a blank line before beginning the author list, which also is to be centered. If several authors are from one organization, save space and make the list easier to read by grouping authors so that the organization need be typed only once. After each author or group of authors, use parentheses to enclose their affiliation employer (first level only omit division, department, etc.), city, state/province (if applicable) and country. Bold and italicize the name of the presenting author. Leave a blank line after the authors and then begin the text, typing it single-spaced and justifying only the left margin. Leave one blank line between paragraphs; do not indent paragraphs. Abstracts should be written in a letter-only manner. Do not use sub-title, figure, table and any non-letter content. Remove citation list, special symbol, header and footer. Email address of the corresponding/presenting author is to be listed (see the example below). Mailing address listed in the cover note must be sufficient for international delivery. Please read an example of the abstracts and its cover note in the next pages. More information can be found at the conference web site http://www.AASci.org/conference/env/2016/abstracts.html.

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In order to eliminate the light shifts and to increase the stability of gas-cell atomic clocks using optical pumping of the alkali atoms, the detection of a microwave pulse-induced coherent emission is used as the correction signal to lock a crystal oscillator to the atomic transition. Also, the line width of the O-O hyperfine transition is artificially narrowed by subjecting the atoms in the cell to two phase-coherent microwave pulses. In this case the resonance line has a width characteristic of the pulse-repetition frequency which can be made several times smaller than the natural line width in the cell. Proper timing of the sequence of microwave pulses and light pulses for optical pumping is necessary to conserve phase coherence and to obtain a well-defined Ramsey pattern. Results of the tests on a laboratory model using Rubidium-87 atoms show the elimination of the light shifts and an improvement of the short-term stability of the crystal oscillator by one order of magnitude.
INSTRUCTIONS TO AUTHORS An abstract (maximum 1 page) is required for each platform presentation or poster presentation. Submit the abstract for your presentation as soon as possible to env-abstract@AASci.org. Abstract Format. Abstracts are to be prepared using standard PC-based MS Word software. Abstracts must be in English and cannot exceed one page. Use an 11-point serif font (e.g. Times New Roman) and leave 1-inch (2.5-cm) margins left, right, top, and bottom. Center the title (maximum 15 words, bold type) at the top of the page. Leave a blank line before beginning the author list, which also is to be centered. If several authors are from one organization, save space and make the list easier to read by grouping authors so that the organization need be typed only once. After each author or group of authors, use parentheses to enclose their affiliation employer (first level only omit division, department, etc.), city, state/province (if applicable) and country. Bold and italicize the name of the presenting author. Leave a blank line after the authors and then begin the text, typing it single-spaced and justifying only the left margin. Leave one blank line between paragraphs; do not indent paragraphs. Abstracts should be written in a letter-only manner. Do not use sub-title, figure, table and any non-letter content. Remove citation list, special symbol, header and footer. Email address of the corresponding/presenting author is to be listed (see the example below).Format. Abstracts are to be prepared using standard PC-based MS Word software. Abstracts must be in English and cannot exceed one page. Use an 11-point serif font (e.g. Times New Roman) and leave 1-inch (2.5-cm) margins left, right, top, and bottom. Center the title (maximum 15 words, bold type) at the top of the page. Leave a blank line before beginning the author list, which also is to be centered. If several authors are from one organization, save space and make the list easier to read by grouping authors so that the organization need be typed only once. After each author or group of authors, use parentheses to enclose their affiliation employer (first level only omit division, department, etc.), city, state/province (if applicable) and country. Bold and italicize the name of the presenting author. Leave a blank line after the authors and then begin the text, typing it single-spaced and justifying only the left margin. Leave one blank line between paragraphs; do not indent paragraphs. Abstracts should be written in a letter-only manner. Do not use sub-title, figure, table and any non-letter content. Remove citation list, special symbol, header and footer. Email address of the corresponding/presenting author is to be listed (see the example below). Mailing address listed in the cover note must be sufficient for international delivery. Please read an example of the abstracts and its cover note in the next pages. More information can be found at the conference web site http://www.AASci.org/conference/env/2016/abstracts.html.