Resonant two-photon photorefractive grating in praeseodymium-doped strontium barium niobate with cw lasers

Abstract

We report experimental observation of resonant two-photon photorefractive gratings in Pr-doped SBN:60. Long-lived 4f intermediate states significantly reduced intensity threshold, thus permitting use of cw lasers for the two-photon transitions. Both two-beam one-color two-photon gratings and three-beam two-color gratings were observed. We expect these results to be extended to other rare-earth dopants.

© 1996 Optical Society of America

Two-color holography in reduced near-stoichiometric lithium niobate

Harald Guenther, Roger Macfarlane, Yasunori Furukawa, Kenji Kitamura, and Ratnakar Neurgaonkar
Appl. Opt. 37(32) 7611-7623 (1998)

Two-color photorefractive effect in Mg-doped lithium niobate

Albrecht Winnacker, Roger M. Macfarlane, Yasunori Furukawa, and Kenji Kitamura
Appl. Opt. 41(23) 4891-4896 (2002)

High-efficiency nonvolatile holographic storage with two-step recording in praseodymium-doped lithium niobate by use of continuous-wave lasers

Y. S. Bai, R. R. Neurgaonkar, and R. Kachru
Opt. Lett. 22(5) 334-336 (1997)

Resonant two-photon processes for nonvolatile holography in photorefractive crystals under continuous-wave illumination

Loukas Paraschis, Matthew C. Bashaw, Alice Liu, and Lambertus Hesselink
J. Opt. Soc. Am. B 14(10) 2670-2680 (1997)

Relaxation of light-induced absorption changes in photorefractive lithium tantalate crystals

S. Wevering, J. Imbrock, and E. Krätzig
J. Opt. Soc. Am. B 18(4) 472-478 (2001)