It is shown how demodulation of rapidly modulated light beams can be achieved within a single charge-coupled device (CCD). Two interlaced image planes are created by optically masking every second CCD row and transferring the charges back and forth between the two image planes in synchrony with the modulation. The method has been successfully tested for modulation frequencies of 50 and 100 kHz, using integration times up to 1 s. No significant accumulated charge transfer losses are seen for integration times as long as 105 modulation cycles (1 s). This demonstrates the feasibility of a CCD polarimeter using piezoelastic modulation of the state of polarization.

© 1990 Optical Society of America

PDF Article


  • View by:
  • |
  • |
  • |

  1. J. C. Kemp, “Piezo-Optical Birefringence Modulators,” J. Opt. Soc. Am. 59, 950–954 (1969).
  2. J. O. Stenflo, “Solar Magnetic and Velocity-Field Measurements: New Instrument Concepts,” Appl. Opt. 23, 1267–1278 (1984).
    [CrossRef] [PubMed]
  3. J. O. Stenflo, H. Povel, “Astronomical Polarimeter with 2-D Detector Arrays,” Appl. Opt. 24, 3893–3898 (1985).
    [CrossRef] [PubMed]
  4. Hinds International, Inc., Hillsboro, OR 97124.
  5. English Electronic Valve Co., Ltd, Chelmsford, Essex, England.
  6. ELTEC Elektronik GmbH, D-6500 Mainz 42, F.R. Germany.

1985 (1)

1984 (1)

1969 (1)

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.