Photorefractive effect at 775 nm in doped lithium niobate crystals

Journal Article · Mon Jul 15 00:00:00 EDT 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4813790· OSTI ID:22122815

Nava, G.; Minzioni, P.; Cristiani, I.; Degiorgio, V. ^[1]; Argiolas, N.; Bazzan, M.; Ciampolillo, M. V.; Pozza, G.; Sada, C. ^[2]

---

1. Department of Electrical, Computer, and Biomedical Engineering, and CNISM, University of Pavia, 27100 Pavia (Italy)
2. Physics and Astronomy Departement, University of Padova, 35131 Padova (Italy)

The photorefractive effect induced by 775-nm laser light on doped lithium niobate crystals is investigated by the direct observation in the far field of the transmitted-beam distortion as a function of time. Measurements performed at various Zr-doping concentrations and different light intensities show that the 775-nm light beam induces a steady-state photorefractive effect comparable to that of 532-nm light, but the observed build-up time of the photovoltaic field is longer by three-orders of magnitude. The 775-nm photorefractivity of lithium niobate crystals doped with 3 mol. % ZrO{sub 2} or with 5.5 mol. % MgO is found to be negligible.

• OSTI ID: 22122815
• Journal Information: Applied Physics Letters, Vol. 103, Issue 3; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BEAMS
COMPARATIVE EVALUATIONS
CONCENTRATION RATIO
CRYSTALS
DOPED MATERIALS
LASER RADIATION
LITHIUM COMPOUNDS
MAGNESIUM OXIDES
NIOBATES
PHOTOVOLTAIC EFFECT
REFRACTION
STEADY-STATE CONDITIONS
TIME DEPENDENCE
VISIBLE RADIATION
ZIRCONIUM OXIDES