Accurate absolute measurement of trapped Cs atoms in a MOT
Fuente:
Redalyc
Saved in:
| Main Author: | |
|---|---|
| Format: | Artículo científico |
| Language: | en |
| Published: |
Sociedad Mexicana de Física A.C.
2007
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1876456621611155456 |
|---|---|
| author | M. Talavera O. |
| author_facet | M. Talavera O. |
| contents | Accurate absolute measurement of trapped Cs atoms in a MOT M. Talavera O. M. López R. E. de Carlos L. S. Jimémez S. Física, Astronomía y Matemáticas MOT diode lasers cold Cs atoms laser stabilization Time and Frequency Metrology A Cs-133 Magneto-Optical Trap (MOT) has been developed at the Time and Frequency Division of the Centro Nacional de Metrolog´ıa,CENAM, in Mexico. This MOT is part of a primary frequency standard based on ultra-cold Cs atoms, called CsF-1 clock, under developmentat CENAM. In this Cs MOT, we use the standard configuration (¾+ ¡ ¾¡) 4-horizontal 2-vertical laser beams 1.9 cm in diameter, with 5mW each. We use a 852 nm, 5 mW, DBR laser as a master laser which is stabilized by saturation spectroscopy. Emission linewidth of themaster laser is 1 MHz. In order to amplify the light of the master laser, a 50 mW, 852 nm AlGaAs laser is used as slave laser. This slavelaser is stabilized by light injection technique. A 12 MHz red shift of the light is performed by two double passes through two Acusto-OpticModulators (AOMs). The optical part of the CENAMs MOT is very robust against mechanical vibration, acoustic noise and temperaturechanges in our laboratory, because none of our diode lasers use an extended cavity to reduce the linewidth. In this paper, we report results ofour MOT characterization as a function of several operation parameters such as the intensity of laser beams, the laser beam diameter, the redshift of light, and the gradient of the magnetic field. We also report accurate absolute measurement of the number of Cs atoms trapped in ourCs MOT. We found up to 6 £ 107 Cs atoms trapped in our MOT measured with an uncertainty no greater than 6.4%. 2007 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57053505 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.5 Vol.53 |
| format | Artículo científico |
| id | redalyc_57053505 |
| institution | Redalyc |
| language | en |
| publishDate | 2007 |
| publisher | Sociedad Mexicana de Física A.C. |
| spellingShingle | Accurate absolute measurement of trapped Cs atoms in a MOT M. Talavera O. Física, Astronomía y Matemáticas MOT diode lasers cold Cs atoms laser stabilization Time and Frequency Metrology Accurate absolute measurement of trapped Cs atoms in a MOT M. Talavera O. M. López R. E. de Carlos L. S. Jimémez S. Física, Astronomía y Matemáticas MOT diode lasers cold Cs atoms laser stabilization Time and Frequency Metrology A Cs-133 Magneto-Optical Trap (MOT) has been developed at the Time and Frequency Division of the Centro Nacional de Metrolog´ıa,CENAM, in Mexico. This MOT is part of a primary frequency standard based on ultra-cold Cs atoms, called CsF-1 clock, under developmentat CENAM. In this Cs MOT, we use the standard configuration (¾+ ¡ ¾¡) 4-horizontal 2-vertical laser beams 1.9 cm in diameter, with 5mW each. We use a 852 nm, 5 mW, DBR laser as a master laser which is stabilized by saturation spectroscopy. Emission linewidth of themaster laser is 1 MHz. In order to amplify the light of the master laser, a 50 mW, 852 nm AlGaAs laser is used as slave laser. This slavelaser is stabilized by light injection technique. A 12 MHz red shift of the light is performed by two double passes through two Acusto-OpticModulators (AOMs). The optical part of the CENAMs MOT is very robust against mechanical vibration, acoustic noise and temperaturechanges in our laboratory, because none of our diode lasers use an extended cavity to reduce the linewidth. In this paper, we report results ofour MOT characterization as a function of several operation parameters such as the intensity of laser beams, the laser beam diameter, the redshift of light, and the gradient of the magnetic field. We also report accurate absolute measurement of the number of Cs atoms trapped in ourCs MOT. We found up to 6 £ 107 Cs atoms trapped in our MOT measured with an uncertainty no greater than 6.4%. 2007 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57053505 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.5 Vol.53 |
| title | Accurate absolute measurement of trapped Cs atoms in a MOT |
| topic | Física, Astronomía y Matemáticas MOT diode lasers cold Cs atoms laser stabilization Time and Frequency Metrology |
| url | https://www.redalyc.org/articulo.oa?id=57053505 |