Sensitivity and fatigue of LiTaO3 for holographic recording
Abstract
The sensitivity of LiTaO3 crystals to hologram formation has been observed to vary with impurity concentration. For a writing wavelength of 488.0 nm and power density of 1.1 W/cm2 the sensitivity varied from a value comparable to the most sensitive doped LiNbO3 for an impure crystal to a value more than 5 orders of magnitude smaller for a purer crystal. Fatigue effects were observed upon write-erase cycling. These effects were dependent upon writing and erasure polarization and power density and could be minimized by proper choice of optical parameters.
- Publication:
-
Applied Physics Letters
- Pub Date:
- July 1974
- DOI:
- 10.1063/1.1655269
- Bibcode:
- 1974ApPhL..25...38S
- Keywords:
-
- Crystal Optics;
- Holography;
- Lithium Oxides;
- Optical Memory (Data Storage);
- Sensitivity;
- Tantalum Oxides;
- Argon Lasers;
- Impurities;
- Laser Heating;
- Optical Polarization;
- Photographic Recording;
- Thermal Fatigue;
- Solid-State Physics