Showing papers on "Responsivity published in 1970"
TL;DR: In this article, the performance of position-sensitive Schottky barrier gold-silicon photodiodes in the presence of uniform radiant background levels is investigated, and proper conditions of reverse bias and external circuit loading are shown to reduce the background saturation effects while maintaining nearly constant responsivity.
Abstract: Performance of position-sensitive Schottky barrier gold-silicon photodiodes in the presence of uniform radiant background levels is investigated. Proper conditions of reverse bias and external circuit loading are shown to reduce the background saturation effects while maintaining nearly constant responsivity. The response of the lateral photovoltaic photodetector to CW-modulated and short pulse-width light signals is described. The effect of signal time dependence on the lateral falloff parameter is considered.
13 citations
TL;DR: A thermal radiation detector based on the Nernst effect is capable of relatively high-speed operation without loss of responsivity or detectivity (D*) over its low-frequency values.
Abstract: A thermal radiation detector based on the Nernst effect is capable of relatively high‐speed operation without loss of responsivity or detectivity (D*) over its low‐frequency values. The effective decoupling of the responsivity and thermal time constant is the result of the specific characteristics of the Nernst effect. Results are presented for materials having optimum properties for operation at room temperature (Bi), as well as lower temperatures (Bi97Sb3).
9 citations
TL;DR: In this article, an infrared radiation detector using a thin film of tellurium deposited by evaporation under 10 -4 -10 -5 torr vacuum and oblique incidence on a NaCl support is described.
5 citations
19 May 1970
TL;DR: In this paper, the performance of infrared sensors operating under low-background conditions is evaluated using spectral response, responsivity, noise spectrum, frequence response, detector resistance, and detector impedance.
Abstract: : The purpose of this program is to provide an 'in-house' government capability for measuring and characterizing the performance of infrared sensors operating under low-background conditions. Instrumentation is being developed to allow detector measurements at background flux levels from 1,000,000 to 10 to the 16th power photons/sec/sq cm, over the spectral range from 1 to 20 microns. The detector parameters to be measured and characterized are spectral response, responsivity, noise spectrum, frequence response, detector resistance, and detector impedance. These parameters will be measured and correlated as a function of background flux level, signal irradiance, and detector bias. Possible additional parameters which prove to be useful in describing the performance of a detector will, of course, be measured. (Author)
1 citations
01 Oct 1970
TL;DR: In this article, the authors developed a sensitive all solid-state receiver for 10.6-µm radiation, which consists of an RF-biased mercury doped germanium photoconductor and a solid state microwave package which includes the detection system and the microwave-biasing source.
Abstract: The development of a sensitive all solid-state receiver for 10.6-µm radiation is presented. The receiver consists of an RF-biased mercury doped germanium photoconductor and a solid-state microwave package which includes the detection system and the microwave-biasing source (a transferred electron oscillator). The responsivity of the photodetector was 9.6 × 103volt per watt at a modulating frequency of 1 kHz, and the photoconductive response time was 7 ns measured at an optical power of 1 µW. At a modulating frequency above 1.5 MHz, the detector system is amplifier noise limited with a noise figure of 8.5 dB. The noise equivalent power (NEP) (10.6 µ, 1.5 MHz, 1 Hz) and detectivity D*(10.6 µ, 1.5 MHz, 1 Hz) of the detector were 2.5 × 10-13W (Hz)-1/2and 4.15 × 1010cm (Hz)1/2/W at 4°K, respectively.