Journal article
Electric field assisted holographic recording of surface relief gratings in an azo glass
Publication Details
Authors: | Reinke, N.; Draude, A.; Fuhrmann, T.; Franke, H.; Lessard, R. |
Publication year: | 2004 |
Journal: | Applied Physics B: Lasers and Optics |
Pages range : | 205-209 |
Volume number: | 78 |
ISSN: | 0946-2171 |
Abstract
The formation of holographic gratings in an azo glass is investigated for the simple case of an intensity gratingin the s-polarization of the recording beams. A dual grating is formed as a function of time with a refractive index grating and a relief grating. The diffraction efficiency as a function of recording time is discussed in a model of two consecutive processes with a phase shift. A material transport processis involved in the formation of relief patterns. An additional electrical corona field perpendicular to the sample leads to a magnification of the relief pattern. This process also works in case of a homogeneous exposure.
The formation of holographic gratings in an azo glass is investigated for the simple case of an intensity gratingin the s-polarization of the recording beams. A dual grating is formed as a function of time with a refractive index grating and a relief grating. The diffraction efficiency as a function of recording time is discussed in a model of two consecutive processes with a phase shift. A material transport processis involved in the formation of relief patterns. An additional electrical corona field perpendicular to the sample leads to a magnification of the relief pattern. This process also works in case of a homogeneous exposure.
