Detector of λ =0.27–1.2 μ laser radiation with a high time resolution

Commercial silicon surface-barrier diodes of the DKPs type, with a sensitive surface area of 0.5–2.5 cm in diameter, are suggested as simple and convenient laser radiation detectors. This type of detector can operate in the wavelength range 0.27–1.2 μ with a time constant not exceeding 10 nsec. The absolute responsivity, measured for a batch of diodes, is 0.1–0.3 and 0.005–0.01 A/W at wavelengths of 0.63 and 1.15 μ, respectively. The responsivity of different points on the surface varies by no more than 5%.