Measurements of temperature and spring constant in a magneto-optical trap
We have measured the low-density characteristics of a magneto-optical trap for both isotopes of rubidium. Trapped-atom temperatures are measured by the time-of-flight technique and are similar to temperatures in optical molasses. They are below the Doppler limit in most cases and increase linearly w...
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Veröffentlicht in: | Journal of the Optical Society of America. B, Optical physics Optical physics, 1994-05, Vol.11 (5), p.703 |
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container_title | Journal of the Optical Society of America. B, Optical physics |
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creator | Wallace, C. D. Dinneen, T. P. Tan, K. Y. N. Kumarakrishnan, A. Gould, P. L. Javanainen, J. |
description | We have measured the low-density characteristics of a magneto-optical trap for both isotopes of rubidium. Trapped-atom temperatures are measured by the time-of-flight technique and are similar to temperatures in optical molasses. They are below the Doppler limit in most cases and increase linearly with the ratio of laser intensity to laser detuning. A slight difference between the two isotopes is observed. The data agree well with three-dimensional, multistate, semiclassical simulations. Spring constants of the trap are inferred from careful measurements of the size of the trapped-atom cloud. The spring constant is seen to increase with intensity at low intensity, becoming independent of intensity at high intensity. This trend is consistent with sub-Doppler cooling mechanisms. |
doi_str_mv | 10.1364/JOSAB.11.000703 |
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D. ; Dinneen, T. P. ; Tan, K. Y. N. ; Kumarakrishnan, A. ; Gould, P. L. ; Javanainen, J.</creator><creatorcontrib>Wallace, C. D. ; Dinneen, T. P. ; Tan, K. Y. N. ; Kumarakrishnan, A. ; Gould, P. L. ; Javanainen, J.</creatorcontrib><description>We have measured the low-density characteristics of a magneto-optical trap for both isotopes of rubidium. Trapped-atom temperatures are measured by the time-of-flight technique and are similar to temperatures in optical molasses. They are below the Doppler limit in most cases and increase linearly with the ratio of laser intensity to laser detuning. A slight difference between the two isotopes is observed. The data agree well with three-dimensional, multistate, semiclassical simulations. Spring constants of the trap are inferred from careful measurements of the size of the trapped-atom cloud. The spring constant is seen to increase with intensity at low intensity, becoming independent of intensity at high intensity. This trend is consistent with sub-Doppler cooling mechanisms.</description><identifier>ISSN: 0740-3224</identifier><identifier>EISSN: 1520-8540</identifier><identifier>DOI: 10.1364/JOSAB.11.000703</identifier><language>eng</language><publisher>United States</publisher><subject>664200 - Spectra of Atoms & Molecules & their Interactions with Photons- (1992-) ; ALKALI METALS ; ATOMIC AND MOLECULAR PHYSICS ; COOLING ; DISTRIBUTION FUNCTIONS ; ELECTROMAGNETIC RADIATION ; ELEMENTS ; FUNCTIONS ; LASER RADIATION ; MAGNETIC FIELD CONFIGURATIONS ; METALS ; OPEN CONFIGURATIONS ; RADIATIONS ; RUBIDIUM ; TEMPERATURE MEASUREMENT ; TEMPERATURE RANGE ; TEMPERATURE RANGE 0000-0013 K ; TRAPPING</subject><ispartof>Journal of the Optical Society of America. 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L.</creatorcontrib><creatorcontrib>Javanainen, J.</creatorcontrib><title>Measurements of temperature and spring constant in a magneto-optical trap</title><title>Journal of the Optical Society of America. B, Optical physics</title><description>We have measured the low-density characteristics of a magneto-optical trap for both isotopes of rubidium. Trapped-atom temperatures are measured by the time-of-flight technique and are similar to temperatures in optical molasses. They are below the Doppler limit in most cases and increase linearly with the ratio of laser intensity to laser detuning. A slight difference between the two isotopes is observed. The data agree well with three-dimensional, multistate, semiclassical simulations. Spring constants of the trap are inferred from careful measurements of the size of the trapped-atom cloud. The spring constant is seen to increase with intensity at low intensity, becoming independent of intensity at high intensity. 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D.</creatorcontrib><creatorcontrib>Dinneen, T. P.</creatorcontrib><creatorcontrib>Tan, K. Y. N.</creatorcontrib><creatorcontrib>Kumarakrishnan, A.</creatorcontrib><creatorcontrib>Gould, P. L.</creatorcontrib><creatorcontrib>Javanainen, J.</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Journal of the Optical Society of America. B, Optical physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wallace, C. D.</au><au>Dinneen, T. P.</au><au>Tan, K. Y. N.</au><au>Kumarakrishnan, A.</au><au>Gould, P. L.</au><au>Javanainen, J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Measurements of temperature and spring constant in a magneto-optical trap</atitle><jtitle>Journal of the Optical Society of America. B, Optical physics</jtitle><date>1994-05-01</date><risdate>1994</risdate><volume>11</volume><issue>5</issue><spage>703</spage><pages>703-</pages><issn>0740-3224</issn><eissn>1520-8540</eissn><abstract>We have measured the low-density characteristics of a magneto-optical trap for both isotopes of rubidium. Trapped-atom temperatures are measured by the time-of-flight technique and are similar to temperatures in optical molasses. They are below the Doppler limit in most cases and increase linearly with the ratio of laser intensity to laser detuning. A slight difference between the two isotopes is observed. The data agree well with three-dimensional, multistate, semiclassical simulations. Spring constants of the trap are inferred from careful measurements of the size of the trapped-atom cloud. The spring constant is seen to increase with intensity at low intensity, becoming independent of intensity at high intensity. This trend is consistent with sub-Doppler cooling mechanisms.</abstract><cop>United States</cop><doi>10.1364/JOSAB.11.000703</doi></addata></record> |
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subjects | 664200 - Spectra of Atoms & Molecules & their Interactions with Photons- (1992-) ALKALI METALS ATOMIC AND MOLECULAR PHYSICS COOLING DISTRIBUTION FUNCTIONS ELECTROMAGNETIC RADIATION ELEMENTS FUNCTIONS LASER RADIATION MAGNETIC FIELD CONFIGURATIONS METALS OPEN CONFIGURATIONS RADIATIONS RUBIDIUM TEMPERATURE MEASUREMENT TEMPERATURE RANGE TEMPERATURE RANGE 0000-0013 K TRAPPING |
title | Measurements of temperature and spring constant in a magneto-optical trap |
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