Stray light modeling and performance of the 15cm deep space optical communications transceiver (DSOCT)

W. Thomas Roberts

doi:10.1117/12.840784

26 February 2010 Stray light modeling and performance of the 15cm deep space optical communications transceiver (DSOCT)

W. Thomas Roberts

Proceedings Volume 7587, Free-Space Laser Communication Technologies XXII; 75870V (2010) https://doi.org/10.1117/12.840784
Event: SPIE LASE, 2010, San Francisco, California, United States

Abstract

The Deep Space Optical Communications Transceiver (DSOCT) was developed as a small demonstrator testbed for evaluating optical components and systems for a deep space optical communications system. The need for a low-scatter optical system derives from the requirement for the transceiver to operate to within 2 degree solar elongation angles. An experiment in which the terminal was set up on Earth and pointed near the Sun demonstrated the terminal's ability to achieve Earth-background limited operation somewhere between 2 and 5 degrees of the edge of the solar disk, depending on the Earth-radiance background assumed as the lower bound for background light and the sky radiance conditions during the experiment. Stray light analysis matches the measured scatter to within a factor of 3, and identifies the system's secondary mirror as the main source of concern.

Citation Download Citation

W. Thomas Roberts "Stray light modeling and performance of the 15cm deep space optical communications transceiver (DSOCT)", Proc. SPIE 7587, Free-Space Laser Communication Technologies XXII, 75870V (26 February 2010); https://doi.org/10.1117/12.840784

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