Miniature stimulated Raman scattering (SRS) imaging systems such as an SRS handheld probe and endoscope will enable label-free in vivo optical-biopsy for human patient investigation. Towards the miniature system, the challenge remains at the design and fabrication of such an achromatic micro-objective with low optical aberrations. Recent advances in achromatic metalenses with diffraction-limited performance open the opportunity to tackle the challenge. Here, we demonstrate the first proof-of-concept of metalens-enabled SRS imaging. The metalenses hold great potentials for developing endoscopic SRS and nonlinear imaging system for future clinical applications.
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