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000617392 1001_ $$0P:(DE-H253)PIP1086837$$aSingh, Neetesh Kumar$$b0$$eCorresponding author
000617392 245__ $$aSub-2W tunable laser based on silicon photonics power amplifier
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000617392 520__ $$aHigh-power tunable lasers are intensely pursued due to their vast application potential such as in telecom, ranging and molecular sensing. Integrated photonics, however, is usually considered not suitable for high-power applications mainly due to its small size which limits the energy storage capacity and therefore the output power. In the late 90s, to improve the beam quality and increase the stored energy, large-mode-area (LMA) fibers were introduced in which the optical mode area is substantially large. Such LMA fibers have transformed the high-power capability of fiber systems ever since. Introducing such an LMA technology at the chip-scale can play an equally disruptive role with high power signal generation from an integrated photonics system. To this end, in this work we demonstrate such a technology, and show a very high-power tunable laser with the help of a silicon photonics based LMA power amplifier. We show output power reaching 1.8 W over a tunability range of 60 nm, spanning from 1.83 µm to 1.89 µm, limited only by the seed laser. Such an integrated LMA device can be used to substantially increase the power of the existing integrated tunable lasers currently limited to a few tens of milliwatts. The power levels demonstrated here reach and surpass that of many benchtop systems which truly makes the silicon photonics based integrated LMA device poised towards mass deployment for high power applications without relying on benchtop systems.
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000617392 7001_ $$0P:(DE-H253)PIP1101161$$aLorenzen, Jan$$b1
000617392 7001_ $$0P:(DE-H253)PIP1098636$$aKilinc, Muharrem$$b2
000617392 7001_ $$0P:(DE-HGF)0$$aWang, Kai$$b3
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000617392 773__ $$0PERI:(DE-600)2662628-7$$a10.1038/s41377-024-01681-1$$gVol. 14, no. 1, p. 18$$n1$$p18$$tLight$$v14$$x2095-5545$$y2025
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