Déformation photoinduite dans les films minces contenant des ...

Chapter 3. Microscopic mechanisms at the origin of the photo-induced deformation inazobenzene-containing thin films 86T (a. u.)#$%&'"ON420timeI/I 0 !8400 1 2 3 4 5A (nm)180-180 1 2 3 4 5A (nm)201000 100 200TIME (s)20081205_14 20090310_6!"I/I 0 !00 1 2 3 4 5LightON(a) (b)X (!m)(c)84A (nm)30-30 1 2 3 4 5X (!m)pastel-00527388, version 1 - 19 Oct 2010Figure 3.22: s-assisted s interference. (a-c) simultaneous interfering and assistingbeams: (a) light profile (top) and the correspondent deformation amplitude (bottom,solid curve), dotted curve indicates the deformation without the assisting beam; (b)and (c) optical abnd topography images relative to (a) scanning over one line, scanrange = 5 µm; laser = 1 mW/mm 2 per beam (blue), 2.1 mW/mm 2 per beam (green);sample = sol-gel Si-DR1 ≃ 200 nm thick.p-assisted s-interferenceA (nm)20100-100 100 200time (s)A = h bright! h dark!>!020090309_1420090310_68400 1 2 3 4150-150 1 2 3 4(a)//!//xINTENSITYPROFILESRGamplitudes-assisted p-interferenceA (nm)100-10-200 100 200time (s)A = h bright! h dark!