Incoherent Light Read-Out of Spectral Holograms,
Abstract
It is known that one has investigated two types of approach to Persistent Spectral Hole Burning (PHB), and to potential application for optical data storage. In both methods, a structure is stored within the inhomogeneously broadened optical absorption line of the guest ions or molecules in a host matrix at low temperature. In the first method, monochromatic laser irradiation results in the reduction of the sample absorption coefficient at a given frequency. The burnt spectral hole is then detected by monitoring the transmission of the laser beam when its frequency is scanned over the absorption band. In view of application to optical data storage, spectral hole burning can be regarded as the physical process for addressing a bit of binary encoded information at a position within the absorption band. The maximum number of independent addresses in the absorption band is given by the ratio between the inhomogeneous width delta I and the homogeneous width delta h of the optical transition.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 22, 1992
- Accession Number
- ADP008270
Entities
People
- A. Debarre
- J. C. Keller
- J. L. Le Gouet
- P. Tchenio
Organizations
- National Center for Scientific Research