Surface-relief gratings recording

Constantino CJL, Aroca RF, He J A, Zucolotto V, Li L, Oliveira ON, Kumar J, Tripathy SK. 2002. Raman microscopy and mapping as a probe for photodegradation in surface relief gratings recorded on layer by layer films of Congo red/polyelectrolyte. Appl Spectrosc 56 187 191. 

Yu HF, Okano K, Shishido A, Ikeda T, Kamata K, Komura M, lyoda T. 2005b. Enhancement of surface relief gratings recorded in amphiphilic liquid crystalline diblock copolymer by nanoscale phase separation. Adv Mater 17 2184 2188. 

Fig. 5. Surface-relief gratings recorded in AZ-containing amorphous polymer materials.

Enhancement of Surface-Relief Gratings Recorded in Amphiphilic Liquid-Crystalline Diblock Copolymer by Nanoscale Phase Separation. Adv. Mater. 2005, 17, 2184-2188. 

Jiang, X. L., Kumar, J., Kim, D. Y, Shivshankar, V., and Tripathy, S. K. Polarization dependent recordings of surface relief gratings on azobenzene containing p[Pg.481]

Trunov M. L., Lytvyn P. M., Yannopoulos S. N., Szabo I. A, and Kokenyesi, Photoinduced mass-transport based holographic recording of surface relief gratings in amorphous selenium films. Appl. Phys. Lett, 99, 051906 (2011). 

In order to produce surface-relief electro-optic gratings, Munakata et compared two fabrication methods of SRG inscription. In the first, the SRG was produced with an interference pattern of cw laser, with relatively modest intensities. The gratings so recorded were photo- and thermally erasable, and efficient writing was polarization dependent. In the second method, a phase mask was employed to provide the periodic intensity modulation of a pulsed laser, the 3rd-order harmonic (at 355 nm) of a Nd YAG laser. The SRG was produced with a single laser pulse, allowing a very short fabrication time (less than Is). The direshold for ablation was 500 mj/(em pulse), and the amplitude of the SRG increased with pulse energy. A depth of up to 300 rim could be achieved, leading to a smooth but not sinusoidal surface modulation. 

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