Study of photorefractive effect in crystals Pb5Ge3O11:Cu and Pb5Ge3O11

Semiconductor Physics, Quantum Electronics & Optoelectronics, 4 (3), P. 199-201 (2001)
https://doi.org/10.15407/spqeo4.03.199

Semiconductor Physics, Quantum Electronics & Optoelectronics. 2001. V. 4, N 3. P. 199-201.

PACS: 42.70.N

Study of photorefractive effect in crystals Pb₅Ge₃O₁₁:Cu and Pb₅Ge₃O₁₁

O. Gnatovsky, V. Linnik ¹, L. Pryadko

Institute of Physics of National Academy of Sciences of Ukraine
46 prosp. Nauki, 03028 Kiev, Ukraine
1Dnipropetrovs’k University, 72 Gagarinа Av., 320010 Dnipropetrovs’k, Ukraine

Abstract. For the first time photorefractive properties of Pb₅Ge₃O₁₁:Cu were studied and compared with those of Pb₅Ge₃O₁₁ crystals. Diffraction efficiency of holographic grating registered on Pb₅Ge₃O₁₁:Cu and Pb₅Ge₃O₁₁ crystals was 2.5% and 2.2% for l = 632.8 nm as well as 0.4% and 5.3% for l= 496.5 nm, respectively. Amplification factor value measured at l = 632.8 nm was found to be 1.14 cm^-1 for Pb₅Ge₃O₁₁ and 2.43 cm^-1 for Cu-doped Pb₅Ge₃O₁₁.

Keywords: photorefaction, holography, lead germanate.

Paper receieved 18.06.01; revised manuscript received 25.06.01; accepted for publication 13.07.01.

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