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

Ryu, Sung-Yoon (한국과학기술원 기계항공시스템공학부 기계공학)
You, Jang-Woo (한국과학기술원 기계항공시스템공학부 기계공학)
Kwak, Yoon-Keun (한국과학기술원 기계항공시스템공학부 기계공학)
Kim, Soo-Hyun (한국과학기술원 기계항공시스템공학부 기계공학)
Publication Information
Journal of the Korean Society for Precision Engineering / v.25, no.5, 2008 , pp. 89-95 More about this Journal
Abstract
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.
Keywords
AOTF; Image shift; Compensation; Prism;
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  • Reference
1 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   DOI
2 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   DOI   ScienceOn
3 http://www.escoproducts.com/html/bk-7_optical_glass.html
4 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   DOI
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   DOI
6 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   DOI
7 Hecht, E., "OPTICS," Addison Wesley, pp. 187-188, 2002
8 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   DOI
9 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   DOI
10 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   DOI