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An improved technique for the measurement of low optical absorption losses in bulk glass

  • Glasses and Fibres
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Abstract

A thin rod sample is thermally clamped at both ends to provide a rigid mounting and a thermal short-circuit for heating effects associated with surface losses. The ends are index matched with liquid to minimize sample preparation. A laser beam is focused through the sample and the temperature rise due to the absorbed energy is monitored at its centre. Sensitivity is limited to a few dB km−1 optical loss with a laser of 100 mW power. The theory is discussed in detail for this particular geometry and experimental verification presented.

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Authors and Affiliations

  1. Post Office Research Department, Martlesham Heath, Ipswich, Suffolk, UK

    K. I. White & J. E. Midwinter

Authors
  1. K. I. White
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  2. J. E. Midwinter
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White, K.I., Midwinter, J.E. An improved technique for the measurement of low optical absorption losses in bulk glass. Opto-electronics 5, 323–334 (1973). https://doi.org/10.1007/BF02057131

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  • DOI: https://doi.org/10.1007/BF02057131

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