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| Quadrant Sum & Difference Amplifier | |
| Quadrant photodiode array with current to voltage amplifier that provide top minus bottom and diagonal pair difference signals. APD Modules and Evaluation Board Modules for Quadrant, Duo-Lateral PSD and Wavelength Sensitive Photodiodes.
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| Quadrant Avalanche 1064nm Enhanced Serie10 | |
Segmented quadrant avalanche photodiode with enhanced IR responsivity in hermetic TO type metal can.
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| Quadrant Avalanche Photodiode -Serie9 | |
Segmented quadrant avalanche photodiode with enhanced NIR responsivity in hermetic TO type metal can. Very low dark current due to guard ring diode.
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| Quadrant Photodiodes-Arrays Serie QP | |
| Quadrant Photodiodes consist of an single chip with four active areas, separated by a small gap. These photodiodes are used in a wide range of applications such as position sensing of laser beams, autocollimators and other alignment applications.
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| Position Sensing Photodiodes - Lateral Effect | |
| The lateral effect Position Sensitive Detector ( PSD) is an optoelectronic device based on Silicon PIN diode technology. The PSD converts the energy from an incident light spot into a continuous, position relative, electrical output current. This position signal is relative to the total incident light pattern and indicates the “optical centre” of the incident light.
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Italy Fotonica 
