Transit-time considerations in p-i-n diodes.
Frequency response of p-i-n photodiode, taking account of mobility and nonuniform generation of carriers in i region
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Frequency response of p-i-n photodiode, taking account of mobility and nonuniform generation of carriers in i region
Current multiplication effect on diode bandwidth in InAs photodiodes for use in design of solid state optical heterodyne detectors
A variety of avalanche photodiodes were tested with pulse position modulated Q-switched laser pulses incident on the detector, with varying amounts of attenuation.
The EOS/MISR instrument includes nine pushroom cameras, each at different view to Earth, and an on-board calibrator. The latter includes photodiode detectors, used as the radiometric standards for the experiment, and two Spectralon diffuse panels.
Negative Avalanche Feedback photon counting detectors with near-infrared spectral sensitivity offer an alternative to conventional Geiger mode avalanche photodiode or phototube detectors for free space communications links at 1 and 1.55 microns. These devices demonstrate linear mode photon counting without requiring any external reset circuitry and may even be operated at room temperature. We have now characterized the detection efficiency, dark count rate, after-pulsing, and single photon jitter for three variants of this new detector class, as well as operated these uniquely simple to use devices in actual photon starved free space optical communications links.
Quantum efficiency of silicon measured from photoresponse of silicon surface-barrier photodiodes in vacuum ultraviolet
Individual frames on a photographic film strip in a projector are automatically positioned by a simple circuit. The circuit uses a photodiode that senses frame registry position and a relay that stops the film-advance motor to suspend the film at point of registry.
Electronically switched DC motor commutated by light beam directed onto photodiodes
Narrowband optical heterodyne detection, describing InAs photodiode arrangement
P-i-n photodiodes incident quantum efficiency and apparent noise input power measurements, considering astronomical photometry applications
Fifty-element linear arrays of InAs photodiodes
Anodic bonding of glass coverslips to photodiodes and photovoltaic devices eliminates the need for adhesive. The process requires relatively low temperatures /less than 560 degrees C/ and the metals and glass remain solid throughout the bonding process.
Combination of temperature-compensated logarithmic amplifiers and p-i-n photodiodes operating in zero-bias mode provides lightweight radiometer for detecting spectral intensities encompassing more than three decades over a range of at least 300 to 800 nanometers at low power levels.
Injection laser range finder with avalanche photodiode for Mars rover obstacle sensing, discussing range data processing methods
Instrument measures concentration of small particles in aqueous medium in terms of amount of light scattered and degree to which light transmission is attenuated. Sensitivity to small particles is optimized because both scattered and transmitted illumination levels are detected by photodiodes.
Circuit which includes a thermistor-resistor combination to compensate for temperature fluctuations by supplying input voltage to light-emitting diode, maintains constant light output. Similar circuits can be used for temperature-induced variations in photodiode applications.
Development of audio alarm system to provide remote monitoring of warning devices is discussed. Device uses photodiode connected to self-powered audio alarm unit. Photograph of equipment is included.
High-speed switching circuit protects detectors from sudden, extremely-intense backscattered radiation that results from short-range atmospheric dust layers, or low-level clouds, entering laser/radar field of view. Function of circuit is to provide computer-controlled switching of photodiode detector, preamplifier power-supply voltages, in approximately 10 nanoseconds.