Abstract
We demonstrated a photon-counting chirped amplitude modulation (CAM) Lidar at 1550 nm. In the previous studies, the CAM bandwidth was limited <30 MHz due to the large dead time of the single-photon detectors. In our CAM Lidar system, an InGaAs/InP avalanche photodiode was operated in 1.5-GHz sine-wave gated Geiger mode to reduce the dead time to 6.4 ns. As a result, the CAM bandwidth exceeded 200 MHz, while the modulation period was 0.5 ms, leading to a direct distance accuracy of 0.12 m in daylight environment. This system presented a potential for high accuracy and eye-safe CAM Lidar system.
| Original language | English |
|---|---|
| Article number | 7003977 |
| Pages (from-to) | 616-619 |
| Number of pages | 4 |
| Journal | IEEE Photonics Technology Letters |
| Volume | 27 |
| Issue number | 6 |
| DOIs | |
| State | Published - 15 Mar 2015 |
| Externally published | Yes |
Keywords
- Avalanche photodiodes (APDs)
- Lidar
- Photon-counting