Abstract
In · connection with holographic interferometry for investigating the vibration patterns of human tympanic membranes, spectroscopic properties of the eardrum are of practical interest. When using a ruby laser system for double-exposure holography, the wavelength is fixed. However, continous wave lasers with different wavelengths are used for real-time vibration analysis methods such as electronic speckle pattern interferometry. In this case it is possible to choose an optimum wavelength to maximize the energy reflected. A large amount of backscattered light is desirable for two reasons:
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the possibility of photobiological effects on the eardrum is minimized
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the picture quality of interferograms increases with the strengths of the lighting.
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References
ANGUS, B.: A Scanning Spectrophotometer — Design and Applications, Optical Spectra, 8, (1980). Fig.4 reprinted with permission (modified).
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© 1982 Springer-Verlag Berlin Heidelberg
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Heeke, G. (1982). A Measurement System for Otoscopic Spectroscopy in vivo. In: von Bally, G., Greguss, P. (eds) Optics in Biomedical Sciences. Springer Series in Optical Sciences, vol 31. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-39455-6_36
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DOI: https://doi.org/10.1007/978-3-540-39455-6_36
Publisher Name: Springer, Berlin, Heidelberg
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