Experimental Observation of Rainbow Scattering by a Coated Cylinder: Twin Primary Rainbows and Thin-Film Interference
Applied Optics, Vol. 40, Issue 9, pp. 1548-1558 (2001)
http://dx.doi.org/10.1364/AO.40.001548
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Abstract
We experimentally examine the primary rainbow created by the illumination of a coated cylinder. We present a simple technique for varying the coating thickness over a wide range of values, and we see evidence for two different scattering regimes. In one, where the coating thickness is large, twin rainbows are produced. In the second, where the coating is thin enough to act as a thin film, a single rainbow is produced whose intensity varies periodically as the coating thickness varies. We find good agreement with previous theoretical predictions.
© 2001 Optical Society of America
[Optical Society of America ]
OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.4120) Instrumentation, measurement, and metrology : Moire' techniques
(290.0290) Scattering : Scattering
(290.4020) Scattering : Mie theory
Citation
Charles L. Adler, James A. Lock, Justin K. Nash, and Kirk W. Saunders, "Experimental Observation of Rainbow Scattering by a Coated Cylinder: Twin Primary Rainbows and Thin-Film Interference," Appl. Opt. 40, 1548-1558 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-9-1548
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