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Erschienen in:
2014 | OriginalPaper | Buchkapitel
High Resolution Quadrant Detector Based Tip-tilt Sensor for Adaptive Optics
verfasst von : Awakash Dixit, Vikash Porwal, Aditya K. Mamgain, S. K. Mishra
Erschienen in: Physics of Semiconductor Devices
Verlag: Springer International Publishing
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A high resolution Quadrant Detector (QD) based tip-tilt sensor for adaptive optics system is tested with a 4 mm laser beam. The laser beam is made to displace by a nano-positioning stage with 30 nm resolution. The sensor is found to respond at the displacement (min.) of 1 μm. The corresponding error signal is found to be 4 mV. The sensor is also tested for minimum power requirement with corresponding bandwidth.