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    • 4. 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。
    • 7. 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。