Photobleaching and optical properties of organic crystal 4-N, N-dirnethylamino-4′-N′-methyl stilbazolium tosylate

Photobleaching of organic optical materials can be used to structure the surface layer for integrated optics applications. Linear optical properties and absorption were studied in 4-N, N-dimethylamino-4'-N'-methyl stilbazolium tosylate (DAST) organic crystals within the absorption band from 260700 nm in order to determine the depth-range of photobleacbing. The results were obtained from reflectivity measurements and bleaching experiments. The depth range of photobleaching can be varied between 0.2 and 2.6 mum by selecting a suitable wavelength. (C) 2003 American Institute Of Physics.