A single-mode four-telescope double-Bracewell IOBC fabricated by ultrafast laser inscription achieves 37% throughput and average raw null of 8.13e-3 with self-calibrated null of 1.14e-3 in 200 nm bandwidth at 3.8 um at room temperature.
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Asgard/NOTT: L-band nulling interferometry at the VLTI -- III. The mid-infrared integrated optics beam combiner for NOTT
A single-mode four-telescope double-Bracewell IOBC fabricated by ultrafast laser inscription achieves 37% throughput and average raw null of 8.13e-3 with self-calibrated null of 1.14e-3 in 200 nm bandwidth at 3.8 um at room temperature.