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Ingaasp avalanche photodetectors for non-gated 1.06 micrometer photon-counting receivers
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Jiang, Xudong Krainak, Michael A. Ben-Michael, Rafael Itzler, Mark A. Slomkowski, Krystyna |
| Copyright Year | 2007 |
| Description | The efficient detection of single photons at 1.06 micron is of considerable interest for lidar/ladar systems designed for remote sensing an d ranging as well as for free-space optical transmission in photon-st arved applications. However, silicon-based single photon avalanche diodes (SPADs) used at shorter wavelengths have very low single photon d etection efficiency (approximately 1 - 2%) at 1.06 micron, and InP/In GaAs SPADs designed for telecommunications wavelengths near 1.5 micro n exhibit high dark count rates that generally inhibit non-gated (free-running) operation. To bridge this "single photon detection gap" for wavelengths just beyond 1 micron, we have developed high performance , large area (80 - 200 micron diameter) InP-based InGaAsP quaternary absorber SPADs optimized for operation at 1.06 micron and based on a highly reliable planar geometry avalanche photodiode structure. We wil l show that dark count rates are sufficiently low to allow for non-ga ted operation while achieving detection efficiencies far surpassing t hose found for Si SPADs. At a detection efficiency of 10%, 80 micron diameter devices exhibit dark count rates below 1000 Hz and count rate s of at least 3 MHz when operated at -40 C. Significantly higher dete ction efficiencies (30 - 50%) are achievable with acceptable tradeoff s in dark count rate. In this paper, we will also discuss performance modeling for these devices and compare their behavior with longer wav elength InP-based InGaAs ternary absorber SPADs fabricated on a relat ed device design platform. |
| File Size | 141429 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20070030110 |
| Archival Resource Key | ark:/13960/t9r25x91c |
| Language | English |
| Publisher Date | 2007-04-09 |
| Access Restriction | Open |
| Subject Keyword | Indium Gallium Arsenides Efficiency Indium Phosphides Photon Density Photometers Photons Detection Photodiodes Remote Sensing Photometry Rangefinding Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
