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Note: Space qualified solid state photon counting detector with reduced detection delay temperature drift.

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This summary is machine-generated.

We enhanced a space-qualified photon counting detector for laser time transfer. This modification significantly improves temperature stability, achieving unprecedented precision for ground-to-space measurements.

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Area of Science:

  • Space Science and Technology
  • Optical Metrology
  • Detector Physics

Background:

  • Laser time transfer requires high-precision detectors for ground-to-space measurements.
  • Temperature variations in space negatively impact detector stability and accuracy.
  • Existing solid-state photon counters face limitations due to temperature-dependent delay.

Purpose of the Study:

  • To improve the temperature stability of a space-qualified solid-state photon counter.
  • To reduce systematic errors in laser time transfer by stabilizing detector delay.
  • To achieve sub-picosecond precision in ground-to-space laser time transfer.

Main Methods:

  • Modified the control circuit of a space-qualified solid-state photon counter.
  • Optimized the detector's operating temperature characteristics.
  • Characterized the temperature coefficient of detection delay and timing performance.

Main Results:

  • Achieved a low temperature coefficient of detection delay (20 fs/K) between +22 °C and +46 °C.
  • Maintained timing resolution (40 ps FWHM) and photon detection probability (30%).
  • Enabled laser time transfer precision below 40 fs (time deviation) with 2000 s averaging.

Conclusions:

  • The modified photon counting detector offers superior temperature stability for laser time transfer.
  • The achieved detection delay stability is the best reported for photon counting detectors.
  • The enhanced detector is suitable for future space missions requiring high-precision time transfer.