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Conference papers
Nanometer-scale absolute laser ranging: exploiting a two-mode interference signal for high accuracy distance measurements
Abstract : Absolute distance measurement with accuracy below the micron scale is important in astronomical optical interferometry. We present here an absolute laser rangefinder which relies on the detection of a two mode interference signal. We exploit the specific signature of the signal to extract both the interferometric and synthetic phase measurements, leading to distance measurement with nanometric accuracy. A resolution of 100 pm has been achieved in 75 μs with a relatively simple laser source. Amplitude to phase coupling in the detection chains turns out to be the largest source of systematic errors. A specific detection scheme is implemented, using optical demodulation of the microwave optical signal, to reduce amplitude-to-phase related systematic errors to below the required level.
Cited literature [9 references]
https://hal.archives-ouvertes.fr/hal-01058879
Contributor : Michel Lintz <>
Submitted on : Monday, September 15, 2014 - 11:39:29 AM
Last modification on : Monday, December 14, 2020 - 3:50:03 PM
Long-term archiving on: : Tuesday, December 16, 2014 - 10:15:57 AM
Contributor : Michel Lintz <>
Submitted on : Monday, September 15, 2014 - 11:39:29 AM
Last modification on : Monday, December 14, 2020 - 3:50:03 PM
Long-term archiving on: : Tuesday, December 16, 2014 - 10:15:57 AM
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PHUNG_OHP2013.pdf
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