Technique - (8) Multiphoton nonlinear microscopy (2PE, SHG, THG) for tissue imaging

Type: Experimental

Description: Two-photon excited fluorescence, second-harmonic generation, and third-harmonic generation label-free deep-tissue microscopy with ultrafast lasers.

Department(s)/lab(s): Physics / LOB (Laboratoire d'Optique et Biosciences) | Laboratoire d'Optique et Biosciences (LOB) β€” Beaurepaire Group @ X
Summary:

Emmanuel Beaurepaire (DR1 CNRS, LOB/Γ‰cole Polytechnique) is a pioneer of multiphoton and harmonic generation deep-tissue microscopy. Research: (1) two-photon excited fluorescence (2PEF) and three-photon deep-tissue brain imaging; (2) second-harmonic generation (SHG) and third-harmonic generation (THG) label-free imaging of collagen, myosin, myelin; (3) multimodal 3-photon light-sheet microscopy with ultrafast lasers; (4) metabolic imaging using FLIM/NADH. Key LOB permanent staff (May 2024). Active collaboration with LCF/Lasers group on ultrafast laser development.

Department(s)/lab(s): Bioengineering / Electrical and Computer Engineering | Biophotonics Imaging Laboratory @ UIUC
Summary:

Develops novel optical biomedical imaging technologies (OCT, nonlinear/multiphoton microscopy) for cancer detection, primary-care diagnostics, and neurophotonics, and translates them toward clinical and commercial application.

Department(s)/lab(s): Biomedical Engineering (Physics affiliate) | Campagnola Lab @ UWMadison
Summary:

Develops second- and third-harmonic generation (SHG/THG) nonlinear optical microscopy to image collagen and other non-centrosymmetric structural proteins label-free in tissue, with applications to cancer diagnosis and fibrosis, pushing spatial/orientational resolution of structural imaging in intact tissue.

Department(s)/lab(s): Biomedical Engineering | Laboratory for Optical and Computational Instrumentation (LOCI) @ UWMadison
Summary:

Develops biophotonics and optical instrumentation for live-cell and cancer imaging, including multiphoton microscopy, image informatics, and quantitative image analysis tools; affiliated with the Morgridge Institute for Research.

Department(s)/lab(s): Physics / LOB (Laboratoire d'Optique et Biosciences) | Laboratoire d'Optique et Biosciences (LOB) β€” Beaurepaire Group @ X
Summary:

Marie-Claire Schanne-Klein (DR1 CNRS, LOB) specializes in polarized SHG and THG microscopy for structural tissue imaging. Research: (1) polarimetric SHG imaging of collagen fibril organization β€” molecular orientation mapping; (2) THG microscopy for myelin and red blood cell imaging; (3) structural and functional label-free imaging of connective tissues; (4) multi-scale SHG/THG analysis of biopolymer structure. SHG expert in LOB.

Department(s)/lab(s): Physics / LOB (Laboratoire d'Optique et Biosciences) | Laboratoire d'Optique et Biosciences (LOB) β€” Beaurepaire Group @ X
Summary:

Chiara Stringari (CRCN CNRS, LOB) develops FLIM-based metabolic imaging. Research: (1) fluorescence lifetime imaging microscopy (FLIM) of NAD(P)H and FAD in live tissue for label-free metabolic mapping; (2) phasor analysis of FLIM data for cellular metabolism states; (3) imaging of myelin dynamics using label-free nonlinear microscopy; (4) metabolic imaging in development and disease. 2025 paper on myelin in Optica.

Department(s)/lab(s): Physics / LOB (Laboratoire d'Optique et Biosciences) | Laboratoire d'Optique et Biosciences (LOB) β€” Beaurepaire Group @ X
Summary:

Willy Supatto (DR2 CNRS, LOB) develops ultrafast two-photon light-sheet microscopy for quantitative in vivo imaging of embryo development and tissue dynamics. Research: (1) two-photon SPIM (light-sheet) for volumetric live imaging in zebrafish embryos; (2) SHG imaging of fibrillar proteins; (3) polarization-THG microscopy of structural anisotropy; (4) photodamage in multiphoton imaging. Part of key LOB team with Beaurepaire.

Department(s)/lab(s): Physics & Astronomy | Zheltikov Biophotonics Laboratory @ TAMU
Summary:

Zheltikov integrates NV-diamond magnetometry into photonic-crystal fibers for high-resolution, fiber-delivered magnetic-field imaging and endoscopy, alongside ultrafast biophotonics (multiphoton deep-tissue imaging, SWIR probes) and quantum-light molecular spectroscopy. In the broader landscape of NV-centre ensemble quantum sensing (DEER, nano-NMR, T1 relaxometry) operating near pT/sqrt(Hz) sensitivity, this work extends NV ensemble sensing into fiberized, in-vivo-compatible geometries.