Mr. Hongtang Gao Profile

Hongtang Gao

at National Institute of Metrology

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Author

Publications (7)

Proceedings Article | 15 October 2015 Paper

A scanning measurement method of the pitch of grating based on photoelectric microscope

Hongtang Gao, Zhongyu Wang, Hao Wang

Proceedings Volume 9671, 967110 (2015) https://doi.org/10.1117/12.2199664

KEYWORDS: Microscopes, Signal processing, Charge-coupled devices, Calibration, Image processing, Scanning electron microscopy, Data processing, Metrology, Precision measurement, Atomic force microscopy

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Proceedings Article | 8 October 2015 Paper

Approach to the measurement accuracy of laser wavelength in air

Yunlin Zhang, Hongtang Gao, Hao Wang, Zi Xue

Proceedings Volume 9677, 967729 (2015) https://doi.org/10.1117/12.2202755

KEYWORDS: Refractive index, Interferometers, Humidity, Fabry–Perot interferometers, Diffraction, Diffraction gratings, Environmental sensing, Laser stabilization, Temperature metrology, Carbon dioxide lasers

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Proceedings Article | 21 August 2014 Paper

A novel measuring device for step gauge

Shuanghua Sun, Xueping Shen, Lingding Zou, Hongtang Gao, Xiaoyou Ye

Proceedings Volume 9283, 92830D (2014) https://doi.org/10.1117/12.2069753

KEYWORDS: Sensors, Inductance, Interferometry, Interferometers, Calibration, Measurement devices, Motion measurement, Control systems, Environmental sensing, Laser applications

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Proceedings Article | 10 October 2013 Paper

FPGA-based signal processing method of automatic interference comparator

Zhongyu Wang, Haitao Chang, Hongtang Gao, Xiaoyou Ye

Proceedings Volume 8916, 89161X (2013) https://doi.org/10.1117/12.2035599

KEYWORDS: Signal processing, Calibration, Field programmable gate arrays, Precision measurement, Metrology, Mirrors, Beam splitters, Interferometers, Algorithm development, Digital signal processing

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Proceedings Article | 31 January 2013 Paper

A simple line sensing method by laser line scanning for line scale measurement

Hongtang Gao, Xiaoyou Ye, Jianshuang Li

Proceedings Volume 8759, 87591T (2013) https://doi.org/10.1117/12.2015035

KEYWORDS: Microscopes, Signal processing, Charge-coupled devices, Laser scanners, Sensing systems, Light sources and illumination, Reflection, Light scattering, Calibration, Interferometers

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Proceedings Article | 31 January 2013 Paper

Contact aiming system of 2m laser automatic interferometric comparator

Shuanghua Sun, Xiaoyou Ye, Lingding Zou, Hongtang Gao, Xiaochuan Gan, Xueping Shen

Proceedings Volume 8759, 875907 (2013) https://doi.org/10.1117/12.2014877

KEYWORDS: Sensors, Inductance, Interferometry, Interferometers, Signal processing, Laser systems engineering, Motion controllers, Motion measurement, Metrology, Microscopes

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Proceedings Article | 15 October 2012 Paper

High precision calibration for 2D optical standard

Shuanghua Sun, Xiaochuan Gan, Zi Xue, Xiaoyou Ye, Heyan Wang, Hongtang Gao

Proceedings Volume 8417, 84172H (2012) https://doi.org/10.1117/12.974263

KEYWORDS: Photomasks, Optics manufacturing, Calibration, Precision calibration, Edge detection, Interferometers, Optical calibration, Temperature metrology, Standards development, Glasses

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Showing 5 of 7 publications

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