Brillouin scattering has great potential for communications and quantum technology applications. Here, we propose a novel subwavelength waveguide design to achieve narrow linewidth and strong optomechanical interaction. A Stokes gain of 1.5dB is experimentally achieved in a 6mm-length waveguide with 35.5 mW of input power.
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Ruano et al. (2024) studied this question.
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