scholarly journals Resolution-enhanced heterodyne laser interferometer with differential configuration for roll angle measurement

2018 ◽  
Vol 26 (8) ◽  
pp. 9634 ◽  
Author(s):  
Jingya Qi ◽  
Zhao Wang ◽  
Junhui Huang ◽  
Jianmin Gao
Keyword(s):  
Laser Interferometer ◽  
Angle Measurement ◽  
Roll Angle ◽  
Heterodyne Laser Interferometer

Model and Measurement Method of Optical Nonlinearities Caused by the Heterodyne and Homodyne Interference Terms in the Heterodyne Interferometer

2014 ◽  
Vol 613 ◽  
pp. 58-63
Author(s):  
Hai Jin Fu ◽  
Jiu Bin Tan ◽  
Peng Cheng Hu ◽  
Zhi Gang Fan
Keyword(s):  
Measurement Method ◽  
Laser Interferometer ◽  
Optical Nonlinearity ◽  
Laser Source ◽  
Optical Nonlinearities ◽  
Laser Polarization ◽  
Heterodyne Interferometer ◽  
Optical Mixing ◽  
Ultra Precision ◽  
Heterodyne Laser Interferometer

The heterodyne laser interferometer is widely applied in ultra-precision displacement measurement, but its accuracy is seriously restricted by the optical nonlinearity which arises from the optical mixing in the reference and measurement arms. In an ideal heterodyne laser interferometer, the beam from the laser source consists of two orthogonally linear-polarized components with slightly different optical frequencies and the two components can be completely separated by the polarizing optics, one traverses in the reference arm, the other traverses in the measurement arm, both of them are in the form of a pure optical frequency. However, in a real heterodyne laser interferometer, due to the imperfect laser polarization, the optics defect and the misalignment, the two components of the laser beam cant be perfectly separated, therefore both of the reference arm and the measurement arm contain a portion of the two laser components, which leads to an optical mixing in the two arms of the heterodyne interferometer and causes the cyclic nonlinearity of several to tens of nanometers.

A high-precision roll angle measurement method

Optik ◽  
2015 ◽  
Vol 126 (24) ◽  
pp. 4837-4840 ◽  
Author(s):  
Zhai Yusheng ◽  
Zhang Zhifeng ◽  
Su Yuling ◽  
Wang Xinjie ◽  
Feng Qibo
Keyword(s):  
High Precision ◽  
Measurement Method ◽  
Angle Measurement ◽  
Roll Angle

A digital heterodyne laser interferometer for studying cochlear mechanics

2009 ◽  
Vol 179 (2) ◽  
pp. 271-277 ◽  
Author(s):  
Stefan Jacob ◽  
Cecilia Johansson ◽  
Mats Ulfendahl ◽  
Anders Fridberger
Keyword(s):  
Laser Interferometer ◽  
Cochlear Mechanics ◽  
Heterodyne Laser Interferometer

Precision roll angle measurement based on digital speckle pattern interferometry

2019 ◽  
Vol 30 (4) ◽  
pp. 045005 ◽  
Author(s):  
Sijin Wu ◽  
Jing Yang ◽  
Weixian Li ◽  
Fan Wu ◽  
Mingli Dong
Keyword(s):  
Speckle Pattern ◽  
Angle Measurement ◽  
Roll Angle ◽  
Digital Speckle Pattern Interferometry ◽  
Digital Speckle

Remote Absolute Roll-Angle Measurement in Range of 180° Based on Polarization Modulation

2020 ◽  
Vol 3 (3) ◽  
pp. 228-235
Author(s):  
Xiuguo Chen ◽  
Jinbao Liao ◽  
Honggang Gu ◽  
Chuanwei Zhang ◽  
Hao Jiang ◽  
...  
Keyword(s):  
Angle Measurement ◽  
Roll Angle ◽  
Polarization Modulation

A heterodyne laser interferometer for dilatometer measurements

2009 ◽  
Vol 52 (12) ◽  
pp. 1319-1327 ◽  
Author(s):  
V. P. Kulesh ◽  
L. M. Moskalik ◽  
A. A. Sharov
Keyword(s):  
Laser Interferometer ◽  
Heterodyne Laser Interferometer
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