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PHOTOACOUSTIC STUDY ON SPECTRAL PROPERTIES OF OPTICAL FILMS |
| JIN Gang;CHOW Quantie |
| Institute of Mechanics, Academia Sinica, Beijing |
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| Cite this article: |
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JIN Gang, CHOW Quantie 1987 Chin. Phys. Lett. 4 73-76 |
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Abstract Photoacoustic method is developed to directly determine the absorption spectrum of optical films. For weak absorption, it has a higher precision than conventional spectrophotometric methods. With the aid of a carbon-black film, it can also be used to determine the transmission and reflection spectra. Measurements of some typical optical films are illustrated.
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Published: 01 February 1987
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