Title :
Diffraction efficiency improvement of surface relief grating by corona poling
Author :
Munakata, K. ; Harada, K. ; Anji, H. ; Ituh, M. ; Yatagai, T. ; Umegaki, S.
Author_Institution :
Inst. of Appl. Phys., Univ. of Tsukuba, Ibaraki, Japan
Abstract :
A depth of surface relief gratings (SRG) which is fabricated by the irradiation of laser interference fringes in azo-polymer films are improved by poling. The first-order diffraction efficiency is improved from 1.1% to 7.1%. We describe the diffraction efficiency improvement of SRG by poling. Diffraction efficiency and relief depth of SRG by poling or heating is evaluated and theoretically considered. These characteristics are related to the fabrication mechanism of the surface relief electro optical grating (SREOG) by corona poling.
Keywords :
corona; dielectric polarisation; diffraction gratings; nonlinear optics; optical films; optical polymers; 1.1 to 7.1 percent; SRG; azo-polymer films; corona poling; diffraction efficiency; diffraction efficiency improvement; fabrication mechanism; first-order diffraction efficiency; laser interference fringes; poling; surface relief electro optical grating; surface relief grating; Corona; Diffraction gratings; Holographic optical components; Holography; Interference; Laser beams; Optical device fabrication; Optical films; Optical polymers; Polymer films;
Conference_Titel :
Nonlinear Optics: Materials, Fundamentals, and Applications, 2000. Technical Digest
Conference_Location :
Kaua´i-Lihue, HI, USA
Print_ISBN :
1-55752-646-X
DOI :
10.1109/NLO.2000.883687
