Photoinduced changes of refractive index in PLZT ceramics

Abstract
Photoinduced changes of refractive index (PCI) in nonpolar PLZT is attributed to photoconductivity at the wavelength λ = 488 nm. Optical measurement of PCI profiles suggests that average photocarrier drift length is 〈ℓ〉 ≃ 0.8 μm and they are positively charged.