scholarly journals Three-spherical-mirror test for radius of curvature measurement using a Fabry-Pérot cavity

2019 ◽  
Vol 27 (10) ◽  
pp. 13664
Author(s):  
Youichi Bitou ◽  
Osamu Sato ◽  
Souichi Telada
Keyword(s):  
Radius Of Curvature ◽  
Spherical Mirror ◽  
Curvature Measurement ◽  
Fabry Perot

Characteristics of the defocused spherical Fabry-Pérot interferometer as a quasi-linear dispersion instrument for high resolution spectroscopy of pulsed laser sources

1968 ◽  
Vol 263 (1140) ◽  
pp. 209-223 ◽  
Keyword(s):  
Laser Beam ◽  
Optical Design ◽  
Pulsed Laser ◽  
Resolving Power ◽  
High Resolution Spectroscopy ◽  
Radius Of Curvature ◽  
Spherical Mirror ◽  
Linear Dispersion ◽  
Fabry Perot ◽  
Very High

Defocused spherical mirror Fabry—Pérot etalons, in which the mirror separation is slightly less than the common radius of curvature, produce a multiple-beam fringe pattern of concentric rings, with quasi-linear spectral dispersion over an appreciable annular region corresponding to two free spectral ranges. The characteristics of these interferograms are discussed in relation to their many advantages for pulsed laser spectroscopy. These advantages include: (i) accuracy of frequency difference measurement; (ii) high illumination of the detector with moderate energy density in the laser beam; (iii) ease of alinement and permanent adjustment of the mirrors leading to the attainment in practice of a very high instrumental finesse (N R values of up to 90 have been achieved); (iv) measurement of degree of spatial coherence of laser beam; (v) ease of matching the interferogram to the spatial resolution of the detector. A simple optical path relation determines the positions of the fringes and the location of the quasilinear dispersion region. The interfering wavefronts, formed by multiple reflexion, have been numerically computed and summed to provide information on the finesse, fringe profiles, contrast and optimum conditions of use of this new, very high resolving power (107 to 108) quasi-linear spectrographic disperser. Constructional details are described and optical design criteria are discussed, together with the various experimental arrangements for employing the instrument. Comparison is made with the equivalent confocal and plane Fabry—Pérot etalons and methods of simultaneously measuring

Radius of curvature measurement by Twyman- Green's interferometer

1991 ◽  
Vol 15 (3) ◽  
pp. 203-208 ◽  
Author(s):  
S.Y. El-Zaiat ◽  
L. Missotten ◽  
J. Engelen
Keyword(s):  
Radius Of Curvature ◽  
Curvature Measurement

Comments on the Spherical Mirror Fabry-Perot Interferometer I

1969 ◽  
Vol 8 (3) ◽  
pp. 707 ◽  
Author(s):  
D. J. Bradley ◽  
C. J. Mitchell
Keyword(s):  
Spherical Mirror ◽  
Fabry Perot

Study on Radius of Curvature Measurement System by Interferometry

2013 ◽  
Vol 552 ◽  
pp. 423-427
Author(s):  
Lei Dai ◽  
Gao Wen Wang ◽  
Yong Xin Sui
Keyword(s):  
Measurement System ◽  
Spherical Surface ◽  
Measurement Range ◽  
Standard Uncertainty ◽  
Surface Measurement ◽  
Radius Of Curvature ◽  
Uncertainty Sources ◽  
Curvature Measurement ◽  
Measurement Base ◽  
Uncertainty Of Results

This paper deigns a new ROC measurement system for radius of curvature of spherical surface measurement base on interferometry. The ROC measurement system is designed compactly and continently to use. The ROC measurement range is up to 2000mm, and DIA of the spherical surface is range from 100mm to 300mm. We analyze the uncertainty sources of the ROC measurement system results and calculate combined standard uncertainty. Giving out the experiment results, the relative uncertainty is less than 6.9ppm (ROC~1500mm). By discussing the method, we can improve and reduce the uncertainty of results of ROC measurement system.

Real Time Radius of Curvature Measurement During DVC Operations Based on Flexible Pipe 3D Reconstruction

2015 ◽  
Author(s):  
I. H. F. Santos ◽  
E. Vardaro ◽  
E. Goes ◽  
V. S. Lopes ◽  
A. Vaillant ◽  
...  
Keyword(s):  
3D Reconstruction ◽  
Real Time ◽  
Radius Of Curvature ◽  
Flexible Pipe ◽  
Curvature Measurement
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