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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 29, Iss. 28 — Oct. 1, 1990
  • pp: 4244–4249

Laser scanning microscope with a differential heterodyne optical probe

Shinichi Komatsu, Hiroyuki Suhara, and Hitoshi Ohzu  »View Author Affiliations


Applied Optics, Vol. 29, Issue 28, pp. 4244-4249 (1990)
http://dx.doi.org/10.1364/AO.29.004244


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Abstract

A new laser scanning microscope system has been developed to observe the spatial distribution of light scattering particles or defects in a partially transparent object. The present microscope has an optical probe whose intensity is modulated by the interference effect between two crossed laser beams with slightly different frequencies. In this paper, a Zeeman laser combined with a simple polarizing optical system is used to produce two such coherent beams. Experimental results obtained by using a latex sphere and a microscale as the target show qualitatively that high image contrast is obtained by the present method even if some obscuring particles exist in front of the probe volume. Distributions of light scattering particles or defects in a LiNbO3 and TGS single crystal can be visualized by a computer-controlled scan stage.

© 1990 Optical Society of America

History
Original Manuscript: February 27, 1989
Published: October 1, 1990

Citation
Shinichi Komatsu, Hiroyuki Suhara, and Hitoshi Ohzu, "Laser scanning microscope with a differential heterodyne optical probe," Appl. Opt. 29, 4244-4249 (1990)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-29-28-4244


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References

  1. T. Wilson, C. Sheppard, Theory and Practice of Scanning Optical Microscopy (Academic, London, 1984).
  2. T. Ogawa, N. Nango, “Infrared Light Scattering Tomography with an Electrical Streak Camera for Characterization of Semiconductor Crystals,” Rev. Sci. Instrum. 57, 1135–1139 (1986). [CrossRef]
  3. T. Sawatari, “Optical Heterodyne Scanning Microscope,” Appl. Opt. 12, 2768–2772 (1973). [CrossRef] [PubMed]
  4. Y. Fujii, H. Takimoto, T. Igarashi, “Optimum Resolution of Laser Microscope by Using Optical Heterodyne Detection,” Opt. Commun. 38, 85–90 (1981). [CrossRef]
  5. S. Komatsu, H. Suhara, H. Ohzu, “Differential Heterodyne Optical Probe Using a Zeeman-Laser,” in Proceedings, Fourteenth Congress of the International Commission for Optics, Quebec, (1987), pp. 299–300.
  6. H. A. Haus, Waves and Fields in Optoelectronics (Prentice-Hall, Englewood Cliffs, NJ, 1984), p. 380.
  7. C. W. See, M. V. Iravani, H. K. Wickramasinghe, “Scanning Differential Phase Contrast Optical Microscope: Application to Surface Studies,” Appl. Opt. 24, 2373–2379 (1985). [CrossRef] [PubMed]
  8. C. P. Wang, D. Snyder, “Laser Doppler Velocimetry: Experimental Study,” Appl. Opt. 13, 98–103 (1974). [CrossRef] [PubMed]
  9. M. Born, E. Wolf, Principles of Optics (Pergamon, London, 1987), p. 441.

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