The study reports on InP-based lasers achieving low threshold current and high slope efficiency in the O-band, indicating significant advancements in optical devices.
We design and fabricate InP-based membrane surface-emitting lasers with first- and second-order surface gratings on a SiO 2 /TiO 2 bottom DBR. The device exhibits 1.8-mA threshold current, >50-dB SMSR, and 0.47-W/A slope efficiency in the O-band.
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Tsurugaya et al. (2025) studied this question.
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