High peak power (≥ 10 mW) quantum cascade superluminescent emitter
We report room temperature and milliwatt range mid-infrared superluminescent emission at
5 μm from Quantum Cascade (QC) devices. To achieve high power superluminescence, we
utilize an ultrastrong coupling QC laser design, and employ a cavity formed by the
combination of a 17 tilted cleaved facet and a wet etched rounded and sloped facet to
introduce additional mirror loss. For pulsed mode operation, a 8 mm long and 15 μm wide
device achieves∼ 1.3 mW peak power at 300 K and a 25 μm wide device with Si 3 N 4 anti …
5 μm from Quantum Cascade (QC) devices. To achieve high power superluminescence, we
utilize an ultrastrong coupling QC laser design, and employ a cavity formed by the
combination of a 17 tilted cleaved facet and a wet etched rounded and sloped facet to
introduce additional mirror loss. For pulsed mode operation, a 8 mm long and 15 μm wide
device achieves∼ 1.3 mW peak power at 300 K and a 25 μm wide device with Si 3 N 4 anti …
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