Radiation distribution of 3.4-μm immersion LEDs in the far field

摘要

This article describes how the far-field radiation distribution and power varies with the geometrical parameters of immersion lenses made from silicon (n? = 3.4) and chalcogenide glass (n? = 2.4) mated with LEDs (λ = 3.4 um) based on indium antimonide (n? = 3.5) and estimates the efficiency of using such devices in miniature optical systems.