An Acousto-Optic Laser Heterodyne Technique for High Resolution Position Sensing and Vibration Amplitude Measurement

1974 ◽  
Author(s):  
M.E. Pedinoff
Keyword(s):  
High Resolution ◽  
Vibration Amplitude ◽  
Position Sensing ◽  
Amplitude Measurement ◽  
Laser Heterodyne ◽  
Heterodyne Technique

High‐resolution photovoltaic position sensing with Ti/Si superlattices

1986 ◽  
Vol 49 (24) ◽  
pp. 1647-1648 ◽  
Author(s):  
R. H. Willens ◽  
B. F. Levine ◽  
C. G. Bethea ◽  
D. Brasen
Keyword(s):  
High Resolution ◽  
Position Sensing

Quartz Crystal Double-Ended Tuning Fork Resonator for High Resolution Force Sensing

2014 ◽  
Vol 609-610 ◽  
pp. 1181-1184 ◽  
Author(s):  
Jian Wang ◽  
Cong Zhao ◽  
Shi Ming Zhang ◽  
Jiang Bo Zou
Keyword(s):  
High Resolution ◽  
Vibration Amplitude ◽  
Chemical Etching ◽  
Quartz Crystal ◽  
Tuning Fork ◽  
Ambient Condition ◽  
Force Sensing ◽  
Vibration Attenuation ◽  
Attenuation Structure ◽  
Crystal Wafer

This paper reports a novel piezoelectric quartz crystal double-ended tuning fork (DETF) resonator with vibration attenuation structure, which is suitable for high resolution force sensing. The DETF resonator was designed to work in the fundamental flexure mode, and manufactured along the Y direction based on the Z-cut quartz crystal wafer using photolithographic and anisotropic chemical etching of quartz crystal. The resonance frequency of the DETF resonator is 39.1KHz. Vibration amplitude of the DETF resonator was measured and the experimental results show that vibration amplitude of the joint of DETF resonator is almost three orders of magnitude lower than that of midpoint of DETF, and the quality factor is up to 7750 at ambient condition and 59600 in vacuum, respectively.

Improved holographic method for vibration amplitude measurement from nano to microscale

2014 ◽  
Author(s):  
Pavel Psota ◽  
Vít Lédl ◽  
Roman Doleček ◽  
Jan Václavík ◽  
Václav Kopecký
Keyword(s):  
Vibration Amplitude ◽  
Holographic Method ◽  
Amplitude Measurement

Refractive index determination in fuel cells using high-resolution laser heterodyne interferometer

2011 ◽  
Vol 36 (20) ◽  
pp. 13255-13265 ◽  
Author(s):  
Saeed Olyaee ◽  
Mohammad Shams Esfand Abadi ◽  
Samaneh Hamedi ◽  
Fatemeh Finizadeh
Keyword(s):  
Refractive Index ◽  
Fuel Cells ◽  
High Resolution ◽  
Heterodyne Interferometer ◽  
Laser Heterodyne
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