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  • International Quantum Electronics Conference
  • OSA Technical Digest (Optica Publishing Group, 1984),
  • paper MFF1

High-Photoconductivity Lithium Niobate

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Abstract

It was reported by Zhong Gi-gue et al 1 that lithium niobate with 4.6 or more atomic percent of MgO added to the melt had the ability to withstand optical intensities of about 100 times as great as lithium niobate with less than that amount of MgO. We borrowed a crystal with 4.5% MgO from R. L. Byer of Stanford University, and we con- tracted the services of Crystal Technology, Inc., Palo Alto, California, to grow crystals ranging from 0% to 9% MgO. By measurements at 531-nm wavelength of the extinction ratio of the crystals between crossed polarizers and by holographic grating diffraction efficiency measurements,2 we confirmed the earlier results and also determined that the improvement was due to a hundredfold in- crease in the photoconductivity, while the Glass current remained relatively constant.

© 1984 Optical Society of America

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