Antimonide devices extend the spectrum

摘要

Opto diodes and arrays based on III-anti-monide materials promise to fill an important gap in the long wavelength portion of the spectrum. These make them attractive for imaging applications over the 2-3.5μm range. III-V antimonide devices are more robust and durable and offer more uniform characteristics compared to traditional devices. The superiority over cryogenically cooled lead salt lasers, for example, is making them popular in gas spec-troscopy over the 2-3μm range. These virtues will surely mean that this type of detector becomes the designer's choice for retrofitting present day systems as well as novel new instruments.