Regular Paper

Applied Physics B

, Volume 81, Issue 5, pp 651-655

First online:

Direct near infrared photorefractive recording and pre-exposure controlled hole–electron competition with enhanced recording in undoped Bi12TiO20

  • P.V. dos SantosAffiliated withLaboratório de Óptica-Instituto de Física-IFGW-UNICAMP
  • , J. FrejlichAffiliated withLaboratório de Óptica-Instituto de Física-IFGW-UNICAMP Email author 
  • , J.F. CarvalhoAffiliated withInstituto de Física, Universidade Federal de Goiás

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access


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.