Abstract
An experimental investigation was made of the use of a semiconductor ionization-type photographic system in recording infrared laser radiation pulses. Semiinsulating gallium arsenide, exhibiting photoconductivity in the wavelength range 0.8–1.7 μ, was used as the photodector. The system included a gas-discharge gap ~60 μ thick and the air pressure in the gap was ~100 Torr. Image was recorded on an RF-3 photographic film. The study was carried out on laser pulses of 60 μsec duration and λ=1.315 μ wavelength. The parameters of the system were as follows: the minimum recordable energy density was 5×10–7 J/cm2, the dynamic range was at least 300, and the resolution was ~7 mm–1.
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