Holography in commercially available photoetchable glasses.
Volume holographic gratings are recorded and retrieved in two commercially available glasses: Schott Foturan and Hoya PEG3. These materials are photoetchable, which describes their major application, but they also allow storage of volume holograms without any chemical etching. The samples are illuminated with ultraviolet light at a wavelength of 325 nm and thermally processed to achieve a maximum diffraction efficiency of approximately 9% for a 1-mm-thick sample. The two glasses show similar behavior; the diffraction efficiencies in Foturan tend to be slightly larger, whereas PEG3 tends to have weaker light scattering.
Kösters
Michael
M
Department of Electrical Engineering, California Institute of Technology, Mail Stop 136-93, Pasadena, California 91125, USA. koesters@physik.uni-bonn.de
Hsieh
Hung-Te
HT
Psaltis
Demetri
D
Buse
Karsten
K