172 citations · 630 across the 11 of their papers we have counts for
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physics.optics2019★ 123 cited
Hybrid integrated semiconductor lasers with silicon nitride feedback circuits
Klaus-J. Boller, Albert van Rees, Youwen Fan +17
Hybrid integrated semiconductor laser sources offering extremely narrow spectral linewidth as well as compatibility for embedding into integrated photonic circuits are of high impo…
physics.optics2019★ 172 cited
Ultra-narrow linewidth hybrid integrated semiconductor laser
Youwen Fan, Albert van Rees, Peter J. M. van der Slot +6
We demonstrate a hybrid integrated and widely tunable diode laser with an intrinsic linewidth as narrow as 40 Hz, achieved with a single roundtrip through a low-loss feedback circu…