Simultaneous absolute measurements of principal angle and phase retardation with a new common-path heterodyne interferometer

2004 ◽  
Vol 43 (10) ◽  
pp. 2013 ◽  
Author(s):  
Yu-Lung Lo ◽  
Chun-Hau Lai ◽  
Jing-Fung Lin ◽  
Ping-Feng Hsu
Keyword(s):  
Phase Retardation ◽  
Heterodyne Interferometer ◽  
Common Path ◽  
Principal Angle ◽  
Absolute Measurements

Design and Analysis of Dual-Beam Heterodyne Interferometer

2011 ◽  
Vol 103 ◽  
pp. 177-180
Author(s):  
Ai Song Ju ◽  
Yun Bo Zhang ◽  
Wen Mei Hou
Keyword(s):  
Zeeman Effect ◽  
Optical Path ◽  
Laser Source ◽  
Nonlinearity Error ◽  
Heterodyne Interferometer ◽  
Common Path ◽  
Dual Beam ◽  
The Stability

A dual-beam heterodyne interferometer is designed in this paper. Unlike the Zeeman-effect laser, the two frequencies are generated by two acousto-optic modulators. The different frequency beams are spatial separated, but the optical path comply the principle of common path. Nonlinearity in this system is analyzed in this paper. The periodic nonlinearity error caused by non-ideal laser source is not existed in this system. The stability of this system is tested.

A double common-path heterodyne interferometer for the measurement of flying height modulation

2008 ◽  
Vol 19 (5) ◽  
pp. 055303 ◽  
Author(s):  
Dejiao Lin ◽  
Zhaoyang Yue ◽  
Nanhai Song ◽  
Yonggang Meng ◽  
Chunyong Yin
Keyword(s):  
Flying Height ◽  
Heterodyne Interferometer ◽  
Common Path

Improved common-path fast-scanning heterodyne interferometer system as potential dense-plasma diagnostics

2004 ◽  
Vol 75 (10) ◽  
pp. 3417-3419 ◽  
Author(s):  
Y. U. Nam ◽  
M. S. Cheon ◽  
J. H. Ha ◽  
Y. S. Hwang
Keyword(s):  
Plasma Diagnostics ◽  
Dense Plasma ◽  
Heterodyne Interferometer ◽  
Common Path
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