中国物理B ›› 1993, Vol. 2 ›› Issue (3): 180-189.doi: 10.1088/1004-423X/2/3/003

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EXPERIMENTAL STUDY OF DIFFRACTIVE PROPERTIES OF WAVELENGTH-SIZED SINGLE GROOVES COATED WITH GOLD FILM

吕惠宾a, R.E.BURGEb, D. N. QUb, X. YUANb   

  1. a. Institute of Physics, Academia Sinica, Beijing 100080, China; b. Physics Department, King's College London, London WC2R 2LS.U.K.
  • 收稿日期:1992-06-01 出版日期:1993-03-20 发布日期:1993-03-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China.

EXPERIMENTAL STUDY OF DIFFRACTIVE PROPERTIES OF WAVELENGTH-SIZED SINGLE GROOVES COATED WITH GOLD FILM

Lü HUI-BIN (吕惠宾)a, R.E.BURGEb, D. N. QUb, X. YUANb   

  1. a Institute of Physics, Academia Sinica, Beijing 100080, China; b Physics Department, King's College London, London WC2R 2LS.U.K.
  • Received:1992-06-01 Online:1993-03-20 Published:1993-03-20

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摘要： We have gained a very comprehensive set of results for infrared diffraction (10.6 μm wavelength) from fabricated single grooves of reflection with widths in the range of 5μm to 65μm. The experimental results show that the diffraction can still occur when the groove width becomes comparable to or less than the wavelength of the probing light. Variations of the diffraction intensities have a very regular sinusoidal relationship with the polarization angle of the incident light; and the diffraction intensities are the maximal when the incident light is TM polarized. However, the diffraction intensities will be a minimum when the incident light is TE polarized; and the bigger the diffraction angle, the higher the rate of change of the diffractive intensity with increasing polarization angle of the incident light.

Abstract: We have gained a very comprehensive set of results for infrared diffraction (10.6 μm wavelength) from fabricated single grooves of reflection with widths in the range of 5μm to 65μm. The experimental results show that the diffraction can still occur when the groove width becomes comparable to or less than the wavelength of the probing light. Variations of the diffraction intensities have a very regular sinusoidal relationship with the polarization angle of the incident light; and the diffraction intensities are the maximal when the incident light is TM polarized. However, the diffraction intensities will be a minimum when the incident light is TE polarized; and the bigger the diffraction angle, the higher the rate of change of the diffractive intensity with increasing polarization angle of the incident light.

中图分类号: 

  • 4210