Note: Space qualified photon counting detector for laser time transfer with picosecond precision and stability
- 1 May 2016
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 87 (5), 056102
- https://doi.org/10.1063/1.4948733
Abstract
The laser time transfer link is under construction for the European Space Agency in the frame of Atomic Clock Ensemble in Space. We have developed and tested the flying unit of the photon countingdetector optimized for this space mission. The results are summarized in this Note. An extreme challenge was to build a detector package, which is rugged, small and which provides long term detection delay stability on picosecond level. The device passed successfully all the tests required for space missions on the low Earth orbits. The detector is extremely rugged and compact. Its long term detection delay stability is excellent, it is better than ±1 ps/day, in a sense of time deviation it is better than 0.5 ps for averaging times of 2000 s to several hours. The device is capable to operate in a temperature range of −55 °C up to +60 °C, the change of the detection delay with temperature is +0.5 ps/K. The device is ready for integration into the space structure now.Keywords
Funding Information
- Czech Ministry of Education (RVO 68407700)
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