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| 001 | 617391 | ||
| 005 | 20250715151516.0 | ||
| 024 | 7 | _ | |a 10.1038/s41566-024-01587-9 |2 doi |
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| 100 | 1 | _ | |a Singh, Neetesh Kumar |0 P:(DE-H253)PIP1086837 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Watt-class CMOS-compatible optical high power amplifier |
| 260 | _ | _ | |a London [u.a.] |c 2025 |b Nature Publ. Group |
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| 500 | _ | _ | |a https://doi.org/10.1038/s41566-024-01587-9 |
| 520 | _ | _ | |a High power amplifiers are critical components in optical systems spanning from long range optical sensing and optical communication systems to micromachining and medical surgery. Today, integrated photonics with its promise of large reductions in size, weight and cost cannot be used in these applications, due to the lack of on-chip high power amplifiers. Integrated devices severely lack in output power due to their small size which limits energy storage capacity. For the last two decades, large mode area (LMA) technology has played a disruptive role in fiber amplifiers enabling a dramatic increase of output power and energy by orders of magnitude. Thanks to the capability of LMA fiber to support significantly larger optical modes the energy storage and power handling capability has significantly increased. Therefore, an LMA device on an integrated platform can play a similar role in power and energy scaling of integrated devices. In this work, we demonstrate LMA waveguide-based CMOS compatible watt-class high power amplifiers with an on-chip output power reaching beyond ~ 1 W within a footprint of only ~ 4 mm2. The power achieved is comparable and even surpasses many fiber-based amplifiers. We believe this work has the potential to radically change the integrated photonics application landscape, allowing power levels previously unimaginable from an integrated device replacing much of today’s benchtop systems. Moreover, mass producibility, reduced size, weight and cost will enable yet unforeseen applications for laser technology. |
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| 700 | 1 | _ | |a Wang, Kai |0 P:(DE-HGF)0 |b 2 |
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| 773 | _ | _ | |a 10.1038/s41566-024-01587-9 |0 PERI:(DE-600)2264673-5 |p 1-8 |t Nature photonics |v NA |y 2025 |x 1749-4885 |
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