High emissive power MWIR LED array

Mid-infrared interband cascade light emitting devices with milliwatt output powers at room temperature

“…A leading choice is the light emitting diode (LED), which emits the radiation generated by injected electrons and holes from the surface as in a vertical-cavity surface-emitting laser, except that without an optical cavity to provide feedback there is no coherence or gain threshold. Numerous mid-IR LEDs have been reported, [11][12][13] including LED arrays, [14][15][16] and packaged commercial devices have been available for the past decade. It has also been demonstrated that one can enhance the slope efficiency by cascading multiple active stages in series, 17,18 as in a quantum or interband cascade laser.…”

Next generation mid-wave infrared cascaded light emitting diodes

“…LEDs are well-suited to this application, due to their rapid switching speed, cost, and reliability [40], and large-format InAs/GaSb MWIR arrays have already been realized [41].…”