In vivovisualization of collagen fiber produced by cultured osteoblasts using sensitive second-harmonic-generation microscopy equipped with a 10-fs mode-locked Ti:sapphire laser
Abstract:Second-harmonic-generation (SHG) microscopy is a new tool for observing the collagen fiber in tissue in vivo. Conventional SHG microscopy equipped with 100-fs pulse laser is insufficient to visualize low-order-structured, immature collagen with high contrast (for example, collagen fiber produced by cultured cell) because of low nonlinear susceptibility χ (2) . To enhance the image contrast while avoiding the sample damage, one should increase a peak power of the laser light while maintaining the same average p… Show more
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