------The KY-QA/P seriesKey FeatureslSi&InGaAs, PIN&APD lFast responselIntegrated amplification and operation circuitlCompact structurelSingle power supplylMatching module optionalApplicationslSpot alignmentlPrecision angle measurementlSpace optical communicationDescription The KY-QA/P series quadrant photoreceiver adopts imported four-quadrant photodiode, integrated power supply circuit and corresponding low-noise amplifier circuit. The response wavelength is 400-1100nm (material is Si) and 800-1700nm (material is InGaAs). It’s available in a variety of types, mainly used for laser beam position measurement in systems and widely used in laser alignment, laser communication, laser guidance and other fields.Block diagramOption 1（Precision angle measurement）Option 2（Spot alignme...