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公开(公告)号：US09019506B1
公开(公告)日：2015-04-28
申请号：US13363090
申请日：2012-01-31
IPC分类号： G01B9/02
CPC分类号： G01B9/02001 , G01B9/02 , G01B9/02041 , G01B2290/55 , G01C19/58 , G01C19/64
摘要： A system for controlling a phase measurement in an atom interferometer comprising one or more lasers, a processor, and a memory. The one or more lasers are for providing interrogating beams. A first group of atoms and a second group of atoms traverse an interrogating region of the atom interferometer in substantially opposite directions. The interrogating beams interact substantially simultaneously with both atoms in the first group and atoms in the second group. The first group of atoms and the second group of atoms interact with each of the interrogating beams in a different order. The processor is configured to determine a phase adjustment offset of at least one interrogating beam based at least in part on one or more past interactions of one or more interrogating beams with either the first group of atoms or the second group of atoms.
摘要翻译： 一种用于控制包括一个或多个激光器，处理器和存储器的原子干涉仪中的相位测量的系统。 一个或多个激光器用于提供询问光束。 第一组原子和第二组原子在基本相反的方向上穿过原子干涉仪的询问区。 询问光束基本上同时与第一组中的两个原子和第二组中的原子相互作用。 第一组原子和第二组原子以不同的顺序与每个询问光束相互作用。 所述处理器被配置为至少部分地基于一个或多个询问光束与所述第一原子组或所述第二原子组的一个或多个询问光束确定至少一个询问光束的相位调整偏移。
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公开(公告)号：US20140061454A1
公开(公告)日：2014-03-06
申请号：US13603287
申请日：2012-09-04
申请人： Thomas H. Loftus , Artyom Vitouchkine , Michael R. Matthews , Adam T. Black , Igor Teper , Leo W. Hollberg , Todd L. Gustavson , Brent C. Young
发明人： Thomas H. Loftus , Artyom Vitouchkine , Michael R. Matthews , Adam T. Black , Igor Teper , Leo W. Hollberg , Todd L. Gustavson , Brent C. Young
IPC分类号： H05H3/02
摘要： The device for producing laser-cooled atoms comprises a two dimensional trap or a three-dimensional trap, or a combination of two- and three-dimensional traps. The two-dimensional trap comprises: three or more permanent magnets arranged around a perimeter of a loop, wherein a plane of the loop is perpendicular to a free axis of the two-dimensional atom trap, and the three or more permanent magnets bracket an internal volume of the two-dimensional atom trap; and one or more laser beam input ports enabling access for one or more laser beams to the internal volume of the two-dimensional atom trap.
摘要翻译： 用于生产激光冷却原子的装置包括二维阱或三维阱，或二维和三维陷阱的组合。 二维捕获器包括：围绕环的周边布置的三个或更多个永磁体，其中环的平面垂直于二维原子阱的自由轴，并且三个或更多个永磁体支架内部 体积的二维原子阱; 以及一个或多个激光束输入端口，其使得能够访问一个或多个激光束到二维原子阱的内部体积。
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公开(公告)号：US08921764B2
公开(公告)日：2014-12-30
申请号：US13603287
申请日：2012-09-04
申请人： Thomas H. Loftus , Artyom Vitouchkine , Michael R. Matthews , Adam T. Black , Igor Teper , Leo W. Hollberg , Todd L. Gustavson , Brent C. Young
发明人： Thomas H. Loftus , Artyom Vitouchkine , Michael R. Matthews , Adam T. Black , Igor Teper , Leo W. Hollberg , Todd L. Gustavson , Brent C. Young
IPC分类号： H05H3/02
摘要： The device for producing laser-cooled atoms comprises a two dimensional trap or a three-dimensional trap, or a combination of two- and three-dimensional traps. The two-dimensional trap comprises: three or more permanent magnets arranged around a perimeter of a loop, wherein a plane of the loop is perpendicular to a free axis of the two-dimensional atom trap, and the three or more permanent magnets bracket an internal volume of the two-dimensional atom trap; and one or more laser beam input ports enabling access for one or more laser beams to the internal volume of the two-dimensional atom trap.
摘要翻译： 用于生产激光冷却原子的装置包括二维阱或三维阱，或二维和三维陷阱的组合。 二维捕获器包括：围绕环的周边布置的三个或更多个永久磁体，其中环的平面垂直于二维原子阱的自由轴，并且三个或更多个永磁体支架内部 体积的二维原子阱; 以及一个或多个激光束输入端口，其使得能够访问一个或多个激光束到二维原子阱的内部体积。
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公开(公告)号：US07515620B2
公开(公告)日：2009-04-07
申请号：US10426472
申请日：2003-04-29
IPC分类号： H01S3/00
CPC分类号： H01S5/06213 , H01S5/06812 , H01S5/4025
摘要： A method for optimizing a dc operating drive current of a laser diode is presented. Lasers of a particular type are characterized in terms of the dependency of certain parameters on temperature and of the minimum bias current required for adequate laser speed. The minimum bias current is determined using the operating bias current minus the threshold current all normalized by the threshold current. For individual laser diodes, the threshold current and slope efficiency are obtained at various temperatures to allow calculation at operating temperatures of interest. The minimum laser bias current for speed can then be determined over the operating temperature range. This may be done by setting the optical power to the highest value calculated using this minimum acceptable bias criterion over the operating temperature range. The ac and dc laser driver current sourcing requirements may be computed to ensure laser and module compatibility.
摘要翻译： 提出了一种用于优化激光二极管的直流工作驱动电流的方法。 特定类型的激光器的特征在于某些参数对温度和足够的激光速度所需的最小偏置电流的依赖性。 使用工作偏置电流减去所有由阈值电流归一化的阈值电流来确定最小偏置电流。 对于单独的激光二极管，可以在各种温度下获得阈值电流和斜率效率，以便在感兴趣的工作温度下进行计算。 然后可以在工作温度范围内确定用于速度的最小激光偏置电流。 这可以通过将光功率设置为在工作温度范围内使用该最小可接受偏置标准计算的最高值来完成。 可以计算交流和直流激光驱动器电流源的要求，以确保激光和模块的兼容性。
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5.发明授权Continuously variable attenuation of an optical signal using an optical isolator 有权使用光隔离器对光信号进行连续可变的衰减公开(公告)号：US07050694B2
公开(公告)日：2006-05-23
申请号：US10426453
申请日：2003-04-29
IPC分类号： G02B6/00
CPC分类号： G02B6/2746 , A61K51/1072 , A61K51/1093 , G02B6/266
摘要： Method and apparatus of attenuating an optical signal without adding extra components is presented. The drive current of the optical signal source is set to meet a predetermined bandwidth requirement and exceed a predetermined amplitude requirement. An optical isolator that is used to prevent back-reflections from reaching the optical signal source is used to achieve the desired amount of attenuation. More specifically, the invention includes controlling the attenuation by tuning an angle θ between the transmission axis of a polarizer that is part of the optical isolator and the original polarization state of the optical signal. By increasing the angle θ, the amount of attenuation is increased; by decreasing the angle θ, the amount of attenuation is decreased. The invention allows continuous tuning of the angle θ.
摘要翻译： 提出了在不增加额外分量的情况下衰减光信号的方法和装置。 光信号源的驱动电流被设定为满足预定的带宽要求并超过预定的幅度要求。 用于防止反向反射到达光信号源的光隔离器用于实现所需的衰减量。 更具体地，本发明包括通过调谐作为光隔离器的一部分的偏振器的透射轴与光信号的原始极化状态之间的角度θ来控制衰减。 通过增加角度θ，增加衰减量; 通过减小角度θ，减少衰减量。 本发明允许角度θ的连续调谐。
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6.发明授权Adaptable optical subassembly module for different optical fiber connection interfaces 有权适用于不同光纤连接接口的光学子组件模块公开(公告)号：US06921213B2
公开(公告)日：2005-07-26
申请号：US10426204
申请日：2003-04-29
IPC分类号： G02B6/42
CPC分类号： G02B6/4201 , G02B6/424 , G02B6/4261 , G02B6/4267 , G02B6/4277 , G02B6/4292
摘要： A modular TOSA that is compatible with multiple optical fiber connector standards and a method of making the TOSA are presented. With the invention, a modular TOSA can be made compatible with different connector standards by switching the nose assembly while keeping the port assembly design and the adapter assembly design constant. The nose assembly that is compatible with the desired connector standard is selected from a group of nose assemblies, which are designed to be coupled with the same port assembly but having different connector standards.
摘要翻译： 提供了与多个光纤连接器标准兼容的模块化TOSA和一种制造TOSA的方法。 利用本发明，通过在保持端口组件设计和适配器组件设计恒定的同时切换鼻部组件，可以使模块化TOSA与不同的连接器标准兼容。 与期望的连接器标准兼容的鼻部组件选自一组鼻部组件，其被设计成与相同的端口组件耦合但具有不同的连接器标准。
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