Results 231 to 240 of about 735,472 (273)
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International Conference on Optical Instruments and Technology, 2020
Dispersive interferometry ranging with optical frequency comb (OFC) has shown great advantages in distance metrology for its simple structure, high accuracy and the ability to resist disturbance.
Jindong Wang +3 more
semanticscholar +1 more source
Dispersive interferometry ranging with optical frequency comb (OFC) has shown great advantages in distance metrology for its simple structure, high accuracy and the ability to resist disturbance.
Jindong Wang +3 more
semanticscholar +1 more source
Chromatically dispersed interferometry with wavelet analysis
Optics Letters, 2006A new white-light interferometry point sensor utilizing a chromatically dispersed depth detection field is addressed. Monitoring the interference in the optical frequency domain allows for microscopic height detection without the necessity of a mechanical axial scan.
Evangelos, Papastathopoulos +2 more
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Absolute distance measurement by dispersive interferometry using an electro-optic comb
International Conference on Optical Instruments and Technology, 2020We experimentally demonstrated a method for distance measurement using an electro-optic comb based on dispersive interferometry. An electro-optic comb with the repetition frequency of 10 GHz generated by cascaded phase modulators was adopted as the laser
Xianyu Zhao, Xinghua Qu, Fumin Zhang
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Multiple-Delay Externally Dispersed Interferometry
Fourier Transform Spectroscopy/ Hyperspectral Imaging and Sounding of the Environment, 2005A grating spectrograph's resolution was boosted 6x (25,000 to 140,000) by combining it in series with a Michelson interferometer whose delay was sequentially moved in a few large steps.
David J. Erskine, Jerry Edelstein
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Broadband chromatic dispersion in fiber-coupled optical interferometry
Applied Optics, 2021Chromatic dispersion is a well-known technical challenge in optical interferometry, and the issue is exacerbated when using optical fibers for beam transport. The important sources of chromatic dispersion in a fiber-coupled optical interferometer are investigated using a Mach–Zehnder interferometer operating between 975–1650 nm ...
Ryan, Allured, Jonathan B, Ashcom
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Real-time dispersion compensation in scanning interferometry
Optics Letters, 2002We propose and demonstrate a method of real-time dispersion compensation suitable for scanning interferometry and optical coherence tomography. Static grating tilt in a scanning frequency-domain optical delay line is shown to produce dispersion that is linearly proportional to scan position, and we use this property to achieve depth-dependent ...
Smith, E. D. J. +2 more
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Optics Express
High-precision and multi-degree-of-freedom geometric measurement holds significant importance in feature detection for large-scale equipment manufacturing.
F. Song +5 more
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High-precision and multi-degree-of-freedom geometric measurement holds significant importance in feature detection for large-scale equipment manufacturing.
F. Song +5 more
semanticscholar +1 more source
International Conference on Optical Instruments and Technology, 2020
This paper presents a signal processing method based on continuous wavelet transform in our line-scan dispersive interferometric system. Our method enables us to extract phase information from the spectrum by applying continuous wavelet transform, which ...
Guanhua Zhao, T. Guo, Qianwen Weng
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This paper presents a signal processing method based on continuous wavelet transform in our line-scan dispersive interferometric system. Our method enables us to extract phase information from the spectrum by applying continuous wavelet transform, which ...
Guanhua Zhao, T. Guo, Qianwen Weng
semanticscholar +1 more source
Dispersion in stellar interferometry
Applied Optics, 1990The effects of uncompensated dispersion on the fringe visibility in a two beam interferometer are examined for a long baseline stellar interferometer with a path compensator in air rather than in vacuo. We derive a criterion based on the central fringe visibility for evaluating the effects of dispersion and develop a method for selecting suitable ...
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Fiber Probe Based on Dispersive Interferometry With an Improved Demodulation Algorithm
IEEE Transactions on Instrumentation and MeasurementWe present a microfiber probe based on dispersive interferometry (FPDI) for measuring high-aspect ratio structures with an improved demodulation algorithm and an offset correction method.
Yuming Chen +6 more
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