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Temperature dependence of photorefractive properties of strontium-barium niobate (Sr0.6Ba0.4Nb2O6)

1989; American Institute of Physics; Volume: 66; Issue: 5 Linguagem: Inglês

10.1063/1.344324

1520-8850

Daniel Rytz, B. A. Wechsler, Robert N. Schwartz, C. C. Nelson, C.D. Brandle, A.J. Valentino, G. W. Berkstresser,

Photonic and Optical Devices

Beam coupling gain and response time together with reflectivity and response time of an external ring phase-conjugate mirror are studied as a function of temperature for a crystal of strontium-barium niobate. The photorefractive sensitivity is increased by a factor of 5 when the crystal is heated to 65 °C. Self-pumped reflectivities up to 19% are observed at room temperature. The reflectivity is smaller at elevated temperature.