QUANTUM THEORY OF OPTICAL BEATING IN PHOTOCONDUCTORS,
Abstract
The quantum theory of optical beating in photoconductors is examined. A model is considered in which electrons, initially in a nearly filled band are optically excited to the next higher empty band. It is assumed that the energy gap between these two bands is much greater than kT. For ohmic material with a steady bias voltage, the change in current is proportional to the number of electrons excited by the radiation. Thus, to determine the photosignal, the total number of electrons excited by the radiation is calculated as a function of time. Results demonstrate that the recombination lifetime limits the resolution with which a photoconductive detector can distinguish between 2 light beams. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1964
- Accession Number
- AD0620638
Entities
People
- C. M. Penchina
Organizations
- University of Illinois Urbana–Champaign