Artículos de revistas
Direct near infrared photorefractive recording and pre-exposure controlled hole-electron competition with enhanced recording in undoped Bi12TiO20
Registro en:
Applied Physics B-lasers And Optics. Springer, v. 81, n. 5, n. 651, n. 655, 2005.
0946-2171
WOS:000231881400013
10.1007/s00340-005-1935-x
Autor
dos Santos, PV
Frejlich, J
Carvalho, JF
Institución
Resumen
We report the direct recording of electron-based photorefractive hologram in nominally undoped Bi12TiO20 crystals using 780 nm wavelength light without pre-exposure or any kind of previous processing. A lower intensity absorption grating is also detected. Pre-exposure with shorter wavelength produces an extended lifetime hole-based complementary grating on another photoactive center level and leads to enhanced recording. 81 5 651 655