Title :
Volume and surface phase holographic gratings in the photorefractive crystal Bi/sub 2/TeO/sub 5/
Author :
Kukhtarev, N. ; Kukhtareva, T. ; Mager, L. ; Fort, Ada ; Foldvari, I.
Author_Institution :
Dept. of Phys., Alabama A&M Univ., Normal, AL, USA
Abstract :
Summary form only given. We describe results on the first recording of reflection-type gratings and real-time surface gratings in the new photorefractive crystal Bi/sub 2/TeO/sub 5/. In our experiments, we used a CW Cr-ion laser (wavelength 514 nm). An unexpanded laser beam was directed along the C-axis and the reference beam was formed by the retroreflecting mirror. We have observed maximal diffraction efficiency of the order of 14% with exposure time of 45 min. As well as recording effective volume reflection-type gratings for the first time, we detected nanoscale surface gratings (with period 195 nm) using an atom force microscope.
Keywords :
atomic force microscopy; bismuth compounds; holographic gratings; photorefractive materials; 14 percent; 195 nm; 45 min; 514 nm; Bi/sub 2/TeO/sub 5/; CW Cr-ion laser; atom force microscope; exposure time; maximal diffraction efficiency; photorefractive crystal; reference beam; retroreflecting mirror; surface phase holographic gratings; unexpanded laser beam; volume reflection-type gratings; Bismuth; Gratings; Holographic optical components; Holography; Optical devices; Optical filters; Optical modulation; Optical recording; Optical surface waves; Photorefractive materials;
Conference_Titel :
Lasers and Electro-Optics, 2001. CLEO '01. Technical Digest. Summaries of papers presented at the Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-662-1
DOI :
10.1109/CLEO.2001.948109
