Si or InGaAs? Choosing the Right APD Material for Laser Range Finding
Selecting the Right APD Material for Laser Range Finding
In Laser Range Finder (LRF) design, the right combination of Pulsed Laser Diodes (PLDs) and Avalanche Photodiodes (APDs) can enhance range, accuracy, battery life and overall cost. Designers have the choice between III-V compounds such as InGaAs- or Silicon-based APDs – both with their distinctive set of advantages and disadvantages. This issue of our LRF Guides will provide high-level guidance on how to choose the best standard APDs and when to consider a customized solution.
Custom-made Solutions Offer the Best Balance
The detector material of the APD has great influence on range measurement reliability. Depending on the demands for maximal range, resolution, and eye-safety, designers have the choice between III-V compounds such as InGaAs – or Silicon-based APDs – both with their distinctive set of advantages and disadvantages.
