| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Angle Compensation and Asymmetry Effect of Light Diffracted by Millimeter Liquid Surface Slosh Wave |
| Yang Miao1,2**, Can Wu3, Ning Wang4, Jia-Qi You1 |
1College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124
2State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an 710119
3Beijing Aerospace Automatic Control Institute, China Academy of Launch Vehicle Technology, Beijing 100039
4Beijing Institute of Astronautical Systems Engineering, China Academy of Launch Vehicle Technology, Beijing 100076
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| Cite this article: |
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Yang Miao, Can Wu, Ning Wang et al 2016 Chin. Phys. Lett. 33 074206 |
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Abstract The angle compensation method is adopted to detect sloshing waves by laser diffraction, in the case that the wavelength of the sloshing waves is much greater than that of the incident light. The clear diffraction pattern is observed to be of asymmetry, involving orders, position and interval of the diffraction spots that are discovered during the light grazing incidence. It is found that the larger the angle of incidence is, the more obvious the asymmetry is. The higher the negative diffraction orders are, the smaller the intervals between spots are. On the contrary, in the positive region, the higher the diffraction orders are, the larger the spot intervals are. The positive interval is larger than that of the same negative diffraction order. If the incident angle reaches 1.558 rad in the experiment, all positive diffraction orders completely vanish. Based on the mechanism of phase modulation and with the Fourier transform method, the relations between the incident angle and position, interval spaces, and orders of diffraction spots are derived theoretically. The theoretical calculations are compared with the experimental data, and the comparison shows that the theoretical calculations are in good agreement with the experimental measurement.
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Received: 05 May 2016
Published: 01 August 2016
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| PACS: |
42.87.-d
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(Optical testing techniques)
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43.35.+d
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(Ultrasonics, quantum acoustics, and physical effects of sound)
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42.25.Fx
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(Diffraction and scattering)
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