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公开(公告)号：EP2473885B1
公开(公告)日：2013-05-29
申请号：EP10760896.0
申请日：2010-09-01
发明人： LECOMTE, Steve , HAESLER, Jacques
IPC分类号： G04F5/14
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公开(公告)号：EP3170052A1
公开(公告)日：2017-05-24
申请号：EP14787116.4
申请日：2014-10-08
IPC分类号： G04F5/14
CPC分类号： G04F5/145 , G02B6/124 , G02B6/2706 , G02B2006/12104 , G02B2006/12126 , H03L7/26
摘要： In the present invention a new atomic clock is proposed comprising: at least one light source adapted to provide an optical beam, at least one photo detector and a vapor cell comprising a first optical window, said optical beam being directed through said vapor cell for providing an optical frequency reference signal, said photo detector being adapted to detect said optical frequency reference signal and to generate at least one reference signal, wherein—said atomic clock comprises a first optical waveguide arranged to said first optical window, said first optical waveguide being arranged to incouple at least a portion of said optical beam, said first optical waveguide being sized and shaped so that said first guided light beam is expanded,—a first outcoupler is arranged to outcouple at least a portion of said guided light beam to said vapor cell,—the thickness t of the atomic clock is smaller than 15 mm.
摘要翻译： 在本发明中，提出了一种新的原子钟，其包括：适于提供光束的至少一个光源，至少一个光电探测器和包括第一光学窗口的蒸气室，所述光束被引导通过所述蒸气室以提供 光学频率参考信号，所述光学检测器适于检测所述光学频率参考信号并且产生至少一个参考信号，其中 - 所述原子钟包括布置到所述第一光学窗口的第一光学波导，所述第一光学波导被布置 以将所述光束的至少一部分耦合，所述第一光波导的大小和形状被设定为使得所述第一被引导的光束被扩展， - 第一输出耦合器被布置成将所述被引导的光束的至少一部分输出耦合到所述气室 - 原子钟的厚度t小于15mm。
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公开(公告)号：EP2473886B1
公开(公告)日：2013-05-29
申请号：EP10760897.8
申请日：2010-09-01
发明人： LECOMTE, Steve , HAESLER, Jacques
IPC分类号： G04F5/14
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公开(公告)号：EP2473886A1
公开(公告)日：2012-07-11
申请号：EP10760897.8
申请日：2010-09-01
发明人： LECOMTE, Steve , HAESLER, Jacques
IPC分类号： G04F5/14
摘要： The aim of the present invention is to provide a device for an atomic clock, enabling double passage into the gas cell without the disadvantages of the prior art. Said aim is achieved by a device for an atomic clock, including: a laser source (102) generating a laser beam; a quarter-wave plate (105) modifying the linear polarization of the laser beam into a circular polarization and vice versa; a gas cell (106) placed on the laser beam having a circular polarization; a mirror (107) sending the laser beam back toward the gas cell; a first photodetector (108a); as well as means (103, 101a, 107) for diverting the reflected beam of the laser source (102), characterized in that the device includes a second photodetector (109) placed behind the mirror (107), said mirror being semitransparent and allowing a portion of the laser beam to pass therethrough, said second photodetector (109) being used for controlling the optical frequency of the laser and/or for controlling the temperature of the cell (106).
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公开(公告)号：EP2473885A1
公开(公告)日：2012-07-11
申请号：EP10760896.0
申请日：2010-09-01
发明人： LECOMTE, Steve , HAESLER, Jacques
IPC分类号： G04F5/14
摘要： The invention relates to a device for an atomic clock, including: a laser source (102) that generates a laser beam; a splitter (101) that makes it possible to divert and allow a portion of the laser beam to pass therethrough in accordance with a predefined percentage; a quarter-wave plate (105) that modifies the linear polarization of the laser beam into circular polarization and vice versa; a gas cell arranged on the circular polarization laser beam; a mirror (107) sending the laser beam back toward the gas cell (106); and a first photodetector (108a). The splitter (101) is arranged between the laser source (102) and the mirror (107), the quarter-wave plate (105) is arranged between the splitter (101) and the mirror (107), the gas cell (106) is arranged between the quarter-wave plate (105) and the mirror (107) such that the polarization of the beam emitted by the laser source (102) via the splitter (101) and incident on the quarter-wave plate (105) is linear along the first angle and modified by the quarter-wave plate (105) into circular polarization, and the circular polarization of the beam reflected by the mirror (107) and passing through the gas cell (106) a second time is modified into linear polarization along the second angle by the quarter-wave plate (105), the splitter (101) routing a portion of the retroreflected beam to the first photodetector (108a). The device also comprises a polarizer (103) arranged between the laser beam outlet and the splitter in order to protect the laser source from the retroreflections emitted by different optical elements constituting the device.
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