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Photodetector

 

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Photodiodes are used for the detection of optical power (UV, Visible, and IR) and for the conversion of optical power to electrical power.
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  • Changing Face of Photodetectors
    The revolutions in computer and consumer electronics technologies have given photodetector manufacturers the tools to produce devices with a very high level of integration. These advancements are a double-edged sword, however, because designers quickly take for granted the state of the art
  • Using Photodetectors for Position Sensing (.pdf)
    Applications are expanding rapidly in the use of electro-optical instruments to measure angle, distance, heights, centering, surface uniformity, and other parameters related to position sensing. Applications also include dynamic measurements such as vibration and dynamic balancing, which require
  • Non-Contac Optical Position Sensing Using Silicon Photodiodes (.pdf)
    Although the use of silicon photodetectors for making quantitative light measurements has been long established, there exists a body of other measurement capabilities for such devices, which have gone generally unnoticed. These involve measurements of movements, angle, straightness, object location
  • Optical Spectroscopy
    A customer who is completing his doctorate in Chemistry at the California Institute of Technology has identified the need to measure fast optical signals using fast photo-detectors. The signal pulse width is as short as 2ns. Signals will be acquired at a 1KHz repetition rate, with a record length
  • Computer Controlled Variable Attenuator for Tunable Lasers
    loop attenuator sets and maintains the power by positioning the 1/2 wave-plate based on a feedback signal from a photo-detector. The photodetector can exhibit a strong dependence on wavelength (www.newport.com/818Series). This chromaticity becomes significant when the tuning range is large
  • Fine alignment, synchronized measurements
    Instrumentation buses simplify the task of coordinating motion with data acquisition. A light source, photodetector, and an actuator are the basic components required for aligning fiberoptic cables. Motion control and data acquisition can take place using instrumentation modules that operate from
  • Rotary encoders for motors
    Constant-speed ac-induction motors don't really hold a constant speed. In an optical encoder, an LED typically shines light through a code disk and mask to illuminate a photodetector assembly. The slots in the disk and mask form a shutter that passes or blocks the light beam as the code disk
  • Amplitude and Phase Characterization of Ultrashort Laser Pulses
    reason for this is that autocorrelators utilize a single element photodetector that effectively integrates over the spectral profile of the pulse. Layout 1 APPLICATION NOTE. Amplitude and Phase Characterization. 33. of Ultrashort Laser Pulses. Technology and Applications Center. Newport

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