Characterization of the Radiation Hard Harris/Dins Ring Laser Gyro Photodetectors.
Abstract
Specially designed radiation hard dielectrically isolated photodiodes constructed specifically for a HeNe (632.8 nm) ring laser gyroscope, have been characterized. The spectral response shows a peak of 0.4 + or - 0.1 A/watt in the range of 600 to 700 nm. The measured radiation induced photocurrent of 5.7 + or - 1.8 x 10 to the -13th power coul/rad compares favorably with expectations based on device geometry (7.8 x 10 to -13th power coul/rad). Under nominally identical illumination, optical photocurrents from matching detectors agree to approximately 1.5 + or - 0.5 percent and ionizing radiation produced photocurrent agrees to approximately 6 + or - 4 percent. Detectors which had been exposed to 10 to a million rad(Si) exhibited responsivities 78 + or - 14 percent as large as that of virgin detectors. Chip to chip responsivity variations were about + or - 30 percent. Relevant physics and construction details are reported. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 30, 1980
- Accession Number
- ADA106031
Entities
People
- Burr C. Passenheim