한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제25권5호
  • /
  • Pages.89-95
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  • 2008
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  • 1225-9071(pISSN)
  • /
  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

음향광학변조필터의 이미지 이동 보상을 위한 프리즘 제안

Use of a Prism to Compensate the Image-shifting Error of the Acousto-optic Tunable Filter

  • 류성윤 (한국과학기술원 기계항공시스템공학부 기계공학) ;
  • 유장우 (한국과학기술원 기계항공시스템공학부 기계공학) ;
  • 곽윤근 (한국과학기술원 기계항공시스템공학부 기계공학) ;
  • 김수현 (한국과학기술원 기계항공시스템공학부 기계공학)
  • 발행 : 2008.05.01
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초록

The Acousto-Optic Tunable Filter (AOTF) is a high-speed full-field monochromator which generates two spectrally filtered light beams with ordinary and extraordinary polarization state. Thus, AOTF is widely used to build full-field spectral imaging system or spectral domain interferometer. However, AOTF has a big problem that the angle of diffracted light changes according to the scanning of wavelength, which makes image shift on CCD plane In this paper, we propose an analytic design of prism system to compensate the image shift. The detailed analysis of light paths in a prism and basic experimental results are presented to verify our proposed compensation method. The experimental results agree with simulation results based on suggested prism model and image shift is minimized at optimal condition. Also, it can be extended to compensate the image shift for ordinary and extraordinary polarized light simultaneously.

키워드

참고문헌

  1. Kim, D. S. and Kim, S. H., "Measurement of the thickness profile of a transparent thin film deposited upon a pattern structure with an acousto-optic tunable filter," OPTICS LETTERS, Vol. 27, No. 21, pp. 1893-1895, 2002 https://doi.org/10.1364/OL.27.001893
  2. Akiyama, H., Sasaki, O. and Suzuki, T., "Sinusoidal wavelength-scanning interferometer using an acousto-optic tunable filter for measurement of thickness and surface profile of a thin film," OPTICS EXPRESS, Vol. 13, No. 25, pp. 10066-10074, 2005 https://doi.org/10.1364/OPEX.13.010066
  3. Georgiev, G., Glenar, D. A. and Hillman, J. J., "Spectral characterization of acousto-optic filters used in imaging spectroscopy," Applied Optics, Vol. 41, Issue 1, pp. 209-217, 2002 https://doi.org/10.1364/AO.41.000209
  4. Gass, P. A. and Sambles, J. R., "Accurate design of a noncollinear acousto-optic tunable filter," Optics Letters, Vol. 16, Issue 6, pp. 429-431, 1991 https://doi.org/10.1364/OL.16.000429
  5. Xue, B., Xu, K. and Yamamoto, H., "Discusstion to the equivalent point realized by the two polarized beams in AOTF system," Optics Express, Vol. 4, Issue 3, pp. 139-146, 1999 https://doi.org/10.1364/OE.4.000139
  6. Yano, T. and Watanabe, A., "Acoustooptic TeO2 tunable filter using far-off-axis anisotropic Bragg diffraction," Applied Optics, Vol. 15, Issue 9, pp. 2250-2258, 1976 https://doi.org/10.1364/AO.15.002250
  7. Wachman, E. S., Niu, W. H. and Farkas, D. L., "AOTF microscope for imaging with increased speed and spectral versatility," Biophysical Journal, Vol. 73, Issue 3, pp. 1215-1222, 1997 https://doi.org/10.1016/S0006-3495(97)78154-2
  8. Glenar, D. A., Hillman, J. J., Saif, B. and Bergstralh, J., "Acousto-optic imaging spectro- polarimetry for remote sensing," Applied Optics, Vol. 33, Issue 31, pp. 7412-7424, 1994 https://doi.org/10.1364/AO.33.007412
  9. Hecht, E., "OPTICS," Addison Wesley, pp. 187-188, 2002
  10. http://www.escoproducts.com/html/bk-7_optical_glass.html