Functioning of a metal-dielectric-semiconductor-metal structure with electrooptical reading in the gas-laser information write/erase mode
Abstract
The dynamics involved in the recording and erasure of information by a coherent light of an He-Cd laser for an asymmetric structure based on a photosensitive electrooptical Bi12SiO20 crystal were studied. The metal dielectric semiconductor dielectric metal (MDPDM) structures with optical reading and their application as storage devices for parallel processing of data, and highly sensitive receivers and converters of luminous radiation are discussed. The structure, metal-dielectric-highly resistive semiconductor, has the ability to memorize the effect of the external sources of ionization, accumulating the free charge carriers in the region near the electrode. Electrical voltage is applied to the structure, under the effect of which the carriers drift to the semiconductor dielectric interface, which creates a surface charge which shields the field within the semiconductor and the optical signal is recorded. Optical reading, which does not obliterate the recorded information, can be accomplished by long-wave radiation.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- October 1982
- Bibcode:
- 1982STIN...8320101B
- Keywords:
-
- Electron Optics;
- Gas Lasers;
- Recording Instruments;
- Semiconductors (Materials);
- Dielectrics;
- Display Devices;
- Lasers;
- Metals;
- Readout;
- Lasers and Masers