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High Resolution Quadrant Detector Based Tip-tilt Sensor for Adaptive Optics

  • Awakash Dixit
  • Vikash Porwal
  • Aditya K. Mamgain
  • S. K. Mishra
Part of the Environmental Science and Engineering book series (ESE)

Abstract

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.

Keywords

Quadrant detector Tip-tilt sensor Adaptive optics system 

Notes

Acknowledgments

The authors wish to acknowledge Dr. A. K. Gupta, Director IRDE for encouraging, pursuing and permitting to publish the work. Dr. S. S. Negi, Mr. Durga Singh and Dr. Ajay Kumar are also acknowledged for encouragement and members of adaptive optics group for cooperation. Awakash Dixit is thankful to the IRDE, Dehradun-India for the award of Research Fellowship.

References

  1. 1.
    J.W. Hardy, Adaptive Optics for Astronomical Telescopes, Oxford University Press, Cambridge, UK, (1998).Google Scholar
  2. 2.
    Robert K. Tyson, “Principle of Adaptive Optics,” 2nd Ed., Academic press (1998).Google Scholar
  3. 3.
    G.A. Tyler, D.L. fried, J.O.S.A. 72,804 (1982).Google Scholar

Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Awakash Dixit
    • 1
  • Vikash Porwal
    • 1
  • Aditya K. Mamgain
    • 1
  • S. K. Mishra
    • 1
  1. 1.Adaptive Optics Division, Instruments Research and Development Establishment (IRDE)Defence Research and Development Organisation (DRDO)DehradunIndia

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