Large Aperture, Narrow-Band Detectors for Optical Communication Systems.
Abstract
The patent application provides a sensitive detector means for the reception and detection of optical communication signals which are accompanied by ambient background radiation. An enclosure is provided containing a gas having a resonance energy separation, h nu sub 0, maintained at a pressure which optimizes its resonance radiation effect and maintains an optical density so that virtually all photons of frequency nu sub 0 are absorbed and re-emitted. Means are provided to minimize detection of noise photons by providing a baffle or light trap which will absorb all photons entering the aperture of the enclosure when no gas is present in the enclosure. A mirror is provided to reflect and focus photons through an aperture in the enclosure onto a detector. A provision of a large aperture narrow-band detector for optical communication systems is made for receiving and detecting optical communication with self-filtering to selectively detect the information while discriminating or rejecting background radiation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 02, 1973
- Accession Number
- ADD000604
Entities
People
- Howard E. Rast
Organizations
- United States Department of the Navy