Abstract
The feasibility of detecting the emission of a microdisk laser with a diameter of 23 μm with an active region based on InGaAs/GaAs quantum well-dots using a nearby photodetector (100 × 4000 μm) with a similar active region is demonstrated. For continuous lasing, a pump current of 20 mA, and a distance between the faces of the microlaser and the photodetector of about 100 μm, a photocurrent of ~10 μA was obtained, which corresponds to a photodetector sensitivity of ~0.9 μA/μW.
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Funding
The work on the development of a microlaser and photodetector and the study of their characteristics was supported by the Russian Science Foundation (agreement no. 1812-00287). Studies of the photodiode photocurrent were carried out as part of the Program of Fundamental Research of the Higher School of Economics in 2020.
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Translated by E. Chernokozhin
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Kryzhanovskaya, N.V., Moiseev, E.I., Nadtochiy, A.M. et al. A Micro Optocoupler Based on a Microdisk Laser and a Photodetector with an Active Region Based on Quantum Well-Dots. Tech. Phys. Lett. 46, 629–632 (2020). https://doi.org/10.1134/S1063785020070111
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DOI: https://doi.org/10.1134/S1063785020070111