Mr. Yuexiang Peng Profile

Yuexiang Peng

at Beijing Institute of Petrochemical Technology

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Author

Publications (3)

Proceedings Article | 8 January 2008 Paper

Optical path layout and moving mirrors of wavemeter based on Michelson interferometer

Liqiang Wang, Yuexiang Peng, Fengyou Gao, Yongli He, Hongxing Zheng

Proceedings Volume 6835, 68350X (2008) https://doi.org/10.1117/12.758088

KEYWORDS: Mirrors, Doppler effect, Photodiodes, Beam splitters, Michelson interferometers, Prisms, Control systems, Reflectors, Chemical oxygen iodine lasers, Control systems design

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General wavemeters based on Michelson interferometer only have a moving arm, which cann't more multiply optical paths' differences, and is unable to avoid dispersion from a beamsplitter. Commonly, the moving mirror driven by a direct current motor and a ball screw have some disadvantage, such as heavy weight, unstable motion. In the paper, a better optical layout, and configuration and a driving method of moving mirrors are proposed. A newly optical paths layout of a wavemeter based on Michelson Interferometer is present, including two moving mirrors for forming optical paths' differences, a beamsplitter for splitting a light into a transmitted light and a reflected light, two reflectors, and a reference laser. It has two moving arms and can eliminate dispersion from the beamsplitter. According to Doppler effect, how to form the interference fringes in the photodiodes is analyzed and formulated. The Doppler effect appears with motion of the moving mirrors. Consequently, alternately dark and bright interference fringes are generated, then received and converted into the electronic signals by the photodiodes. It is concluded that the electronic signals involves the wavelength of a light and the velocity of the moving mirror by investigating the Doppler effect. The structure of the moving mirrors is clarified. The moving mirrors are made of the two pyramid prisms which are placed symmetrically on the driving motor. A controlling system for keeping the moving mirrors in constant velocity is designed. In order to make frequencies of electronic signals from interference fringes stable, the moving mirrors must move in a uniform speed. The voice coil motor (VCM) drags the moving mirror to and fro. VCM in uniform motion is realized by an optical-mechanical-electrical closed-loop feedback system. The Doppler frequency difference of the reference laser is the standard of the system. The PID controller comprising parallel proportional-integral-differential operational circuit regulates the velocity of VCM.

Proceedings Article | 10 June 2006 Paper

Operation principle and design of infrared laser wavemeter

Liqiang Wang, Aibin Zuo, Yuexiang Peng

Proceedings Volume 6344, 634422 (2006) https://doi.org/10.1117/12.693652

KEYWORDS: Reflectors, Doppler effect, Signal detection, Sensors, LCDs, Laser development, Infrared lasers, Laser applications, Argon, Laser stabilization

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Proceedings Article | 10 June 2006 Paper

A new frequency-stabilized design for 633nm He-Ne laser

Liqiang Wang, Aibin Zuo, Yuexiang Peng

Proceedings Volume 6344, 634423 (2006) https://doi.org/10.1117/12.693654

KEYWORDS: Laser stabilization, Helium neon lasers, Sensors, Spectroscopy, Polarization, Magnetism, Laser optics, Signal detection, Laser development, Molecules

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