Surface relief formation in amorphous chalcogenide thin films during holographic recording

Photoinduced mass-transport based holographic recording of surface relief gratings in amorphous selenium films

“…For p-p polarized beams, lateral mass-transport takes places altering the mechanism of SRG formation and, in turn, generates giant non-saturated SRGs. Consequently, polarized light induced effects of SRG formation by holographic recording in amorphous chalcogenides 3,6,[8][9][10]18 can be realized in the simplest material among ChG. This may lead to a better understanding of photoinduced mass-transport on ChG thus enabling the fabrication of photonic elements.…”

“…1 Among them, the effect of light induced surface deformation and direct fabrication of surface relief gratings (SRGs) in ChG is intensively studied over the last decade both experimentally [2][3][4][5][6][7][8][9][10] and theoretically. 11 Two main types of SRG induced by holographic recording, due to the excitation intensity modulation, with near band-gap light in ChG can be distinguished according to their formation mechanism and their properties: 10 (1) small scalar SRG induced by either volume expansion or shrinkage due to different response of the material in the bright and dark zones of the interference pattern formed and (2) giant vectorial SRG induced by lateral mass transport in the case where the light polarization of the recording beams has a component along the light intensity gradient.…”

Elastic modulus and energy dissipation measurements with AFM on chalcogenide thin films

“…Holographic gratings were recorded by using two ppolarized and one additional s-polarized laser beams as this configuration has the most significant effect in chalcogenides [5]. For this purpose a He-Ne laser (633 nm) was used.…”

Optical field-induced surface relief formation on chalcogenide and azo-benzene polymer films

“…The surface relief grating (SRG) direct formation by two coherent laser beam interference have been observed in different disordered materials: in amorphous inorganic (As-S, As-Se chalcogenides [1,4,5], Sb-P-O oxide-containing glass [6]) and organic (azobenzene-containing organic polymers [2,7], acrylamide photopolymers [8], azocellulose [9], organic molecular glasses [10] ) compounds. The efficiency of SRG formation on the azobenzene containing polymer and chalcogenide semiconductor films strongly depends on the polarization state of the recording beams [5,[11][12][13]]. The two s-polarized recording beams produce the largest light intensity modulation in interference pattern.…”