Photoinduced Optical Absorption in Bulk and Thin Film of Yttrium Iron Garnet

Abstract

Photoinduced irreversible change in an optical absorption a is observed for a bulk single crystal and a thin film of yttrium-iron garnets (YlG) over the spectral range 60001'700-2000 run and over the temperature range 80-200 K. In some specimens, coexistence of ph to induced and dark Lla-effectis found atlow temperatures. Experimental data are discussed within a simple phenomellological model .

Spectral-Dependent Photoinduced Magnetostrictive Changes in Y3Fe5O12 Single Crystals

“…The current studies concern optical absorption [3], surface [4] and domain structure [4,5] changes. The significant spectral-dependent optical absorption coefficient changes [3,6] and magnetic permeability changes [7] in photomagnetic YIG samples were found previously and the characteristic spectral areas were reported.…”