High resolution time-of-flight distance measurement device based on femtosecond laser펨토초 레이저 기반 고분해능 시간비행법 거리측정장치

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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.
Assignee
KAIST
Country
US (United States)
Application Date
2011-10-05
Application Number
13253484
Registration Date
2014-03-11
Registration Number
8670108
URI
http://hdl.handle.net/10203/275423
Appears in Collection
ME-Patent(특허)
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