Strontium barium niobate single-crystal fibers: Optical and electro-optic properties

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Abstract
The room‐temperature transverse electro‐optic, r c , coefficient, halfwave voltage, V π, and temperature dependence of the birefringence, Δn 0(T), were determined for Sr0.61Ba0.39 Nb 2O6 single‐crystal fibers produced by the laser‐heated pedestal growth technique. The effect cerium doping, 0.034 at. %, had on the measured properties is also reported. Concurrent measurements on a Czochralski‐grown Sr0.61Ba0.39 Nb 2O6 single crystal enabled comparison of the single‐crystal fibers to a bulk‐grown single crystal. The growth rate of the Sr0.61Ba0.39 Nb 2O6 single‐crystal fibers was approximately an order of magnitude greater than the Czochralski‐grown Sr0.61Ba0.39 Nb 2O6 single crystal. The effect the rapid growth rate had on the optical properties is also discussed.