dorsal/arxiv
View SchemaQuenched narrow-line second- and third-stage laser cooling of 40Ca
| Authors | E. Anne Curtis, Christopher W. Oates, Leo Hollberg |
|---|---|
| Categories | |
| ArXiv ID | physics/0208071 |
| URL | https://arxiv.org/abs/physics/0208071 |
| DOI | 10.1364/JOSAB.20.000977 |
Abstract
We demonstrate three-dimensional (3-D) quenched narrow-line laser cooling and trapping of 40Ca. With 5 ms of cooling time we can transfer 28 % of the atoms from a magneto-optic trap based on the strong 423 nm cooling line to a trap based on the narrow 657 nm clock transition (that is quenched by an intercombination line at 552 nm), thereby reducing the atoms' temperature from 2 millikelvin to 10 microkelvin. This reduction in temperature should help reduce the overall systematic frequency uncertainty for our Ca optical frequency standard to < 1 Hz. Additional pulsed, quenched narrow-line third-stage cooling in 1-D yields sub-recoil temperatures as low as 300 nK, and makes possible the observation of high-contrast two-pulse Ramsey spectroscopic lineshapes.
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"abstract": "We demonstrate three-dimensional (3-D) quenched narrow-line laser cooling and\ntrapping of 40Ca. With 5 ms of cooling time we can transfer 28 % of the atoms\nfrom a magneto-optic trap based on the strong 423 nm cooling line to a trap\nbased on the narrow 657 nm clock transition (that is quenched by an\nintercombination line at 552 nm), thereby reducing the atoms\u0027 temperature from\n2 millikelvin to 10 microkelvin. This reduction in temperature should help\nreduce the overall systematic frequency uncertainty for our Ca optical\nfrequency standard to \u003c 1 Hz. Additional pulsed, quenched narrow-line\nthird-stage cooling in 1-D yields sub-recoil temperatures as low as 300 nK, and\nmakes possible the observation of high-contrast two-pulse Ramsey spectroscopic\nlineshapes.",
"arxiv_id": "physics/0208071",
"authors": [
"E. Anne Curtis",
"Christopher W. Oates",
"Leo Hollberg"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1364/JOSAB.20.000977",
"title": "Quenched narrow-line second- and third-stage laser cooling of 40Ca",
"url": "https://arxiv.org/abs/physics/0208071"
},
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