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    • 1. 发明授权
    • Polarized neutron guide
    • 极化中子引导
    • US07560687B2
    • 2009-07-14
    • US11449374
    • 2006-06-08
    • Sang Jin ChoChang Hee LeeHark Rho KimYoung Jin Kim
    • Sang Jin ChoChang Hee LeeHark Rho KimYoung Jin Kim
    • H05H3/02H05H3/06G12G1/06G21C7/00
    • G21K1/062B82Y10/00G21K1/16G21K2201/061G21K2201/067G21K2201/068H05H3/06
    • A polarized neutron guide for separating neutrons into polarized neutrons while minimizing loss of the neutrons is provided. The polarized neutron guide includes a body, the first space and the second space, and a neutron separation space. The body includes super mirrors coated with a neutron-reflective thin film and the first and second spaces are formed by the first plate inside the body. The neutron separation space is formed by the second plate disposed at the entry of the first space and the third plate disposed at the entry of the second space. Spin-up polarized neutrons and spin-down polarized neutrons are simultaneously separated and transferred in the first and second spaces, respectively. Therefore, with minimum loss of the neutrons, the spin-up polarized neutrons and the spin-down polarized neutrons are effectively separated and collected.
    • 提供了用于将中子分离成极化中子同时最小化中子损失的极化中子引导件。 极化中子引导件包括主体,第一空间和第二空间以及中子分离空间。 身体包括涂有中子反射薄膜的超级镜,第一和第二空间由身体内的第一个板形成。 中子分离空间由设置在第一空间的入口处的第二板和设置在第二空间的入口处的第三板形成。 旋转极化中子和自旋向下极化中子分别在第一和第二空间中分离并转移。 因此,以最小的中子损失,有效地分离和收集了自旋向极化中子和自旋向下极化中子。
    • 7. 发明授权
    • High resolution time-of-flight distance measurement device based on femtosecond laser
    • 基于飞秒激光的高分辨率飞行距离测距装置
    • US08670108B2
    • 2014-03-11
    • US13253484
    • 2011-10-05
    • Seung Woo KimJoo Hyung LeeYoung Jin Kim
    • Seung Woo KimJoo Hyung LeeYoung Jin Kim
    • G01C3/08
    • G01S7/4865G01B11/026G01S7/4811G01S17/10
    • Disclosed is a high resolution time-of-flight distance measurement device based on a femtosecond laser, including a femtosecond laser light source, a polarization beam splitter, a balanced optical cross-correlator in which second harmonic pulses are generated using reference light and measurement light, wherein the second harmonic pulse that was primarily generated is incident on a first photodetector and the second harmonic pulse that was secondarily generated is incident on a second photodetector, so that a difference in intensity of the second harmonic pulses is output, thus resolving the time interval of the pulse laser, a controller for controlling the repetition rate of the femtosecond laser, and a converter for measuring the repetition rate of the femtosecond laser controlled so that the pulses uniformly overlap by means of the controller, using a frequency counter traceable to a time/frequency standard, so that a measured value is converted into distance information.
    • 公开了一种基于飞秒激光器的高分辨率飞行时间距离测量装置,包括飞秒激光光源,偏振分束器,平衡光交叉相关器,其中使用参考光和测量光产生二次谐波脉冲 其中主要产生的二次谐波脉冲入射到第一光电检测器上,并且二次产生的二次谐波脉冲入射到第二光电检测器上,从而输出二次谐波脉冲的强度差,从而解决时间 脉冲激光器的间隔,用于控制飞秒激光器的重复率的控制器,以及用于测量飞秒激光器的重复率的转换器,其被控制,使得脉冲通过控制器均匀地重叠,使用可追溯到 时间/频率标准,使得测量值被转换成距离信息。
    • 10. 发明申请
    • HIGH RESOLUTION TIME-OF-FLIGHT DISTANCE MEASUREMENT DEVICE BASED ON FEMTOSECOND LASER
    • 基于FEMTOSECOND激光器的高分辨率飞行距离测量装置
    • US20120086932A1
    • 2012-04-12
    • US13253484
    • 2011-10-05
    • Seung Woo KIMJoo Hyung LeeYoung Jin Kim
    • Seung Woo KIMJoo Hyung LeeYoung Jin Kim
    • G01C3/08
    • G01S7/4865G01B11/026G01S7/4811G01S17/10
    • Disclosed is a high resolution time-of-flight distance measurement device based on a femtosecond laser, including a femtosecond laser light source, a polarization beam splitter, a balanced optical cross-correlator in which second harmonic pulses are generated using reference light and measurement light, wherein the second harmonic pulse that was primarily generated is incident on a first photodetector and the second harmonic pulse that was secondarily generated is incident on a second photodetector, so that a difference in intensity of the second harmonic pulses is output, thus resolving the time interval of the pulse laser, a controller for controlling the repetition rate of the femtosecond laser, and a converter for measuring the repetition rate of the femtosecond laser controlled so that the pulses uniformly overlap by means of the controller, using a frequency counter traceable to a time/frequency standard, so that a measured value is converted into distance information.
    • 公开了一种基于飞秒激光器的高分辨率飞行时间距离测量装置,包括飞秒激光光源,偏振分束器,平衡光交叉相关器,其中使用参考光和测量光产生二次谐波脉冲 其中主要产生的二次谐波脉冲入射到第一光电检测器上,并且二次产生的二次谐波脉冲入射到第二光电检测器上,从而输出二次谐波脉冲的强度差,从而解决时间 脉冲激光器的间隔,用于控制飞秒激光器的重复率的控制器,以及用于测量飞秒激光器的重复率的转换器,其被控制,使得脉冲通过控制器均匀地重叠,使用可追溯到 时间/频率标准,使得测量值被转换成距离信息。