Hiroshi Katayama*
Ultrafast laser optics has revolutionized precision microfabrication processes across various industries. This article presents a comprehensive overview of recent advancements in ultrafast laser optics technology and its applications in precision microfabrication. Photonics has transformed medical imaging, providing physicians with non-invasive and high-resolution techniques to visualize internal structures and functions. Optical coherence tomography uses light waves to create detailed cross-sectional images of tissues, enabling early detection of diseases like glaucoma and retinal disorders. Diffuse optical imaging uses near-infrared light to measure changes in tissue oxygenation and blood flow, aiding in brain imaging and breast cancer detection. We delve into the principles behind ultrafast laser systems, discuss recent innovations in laser sources and optics components, and explore cutting-edge techniques for achieving high-precision microfabrication. Additionally, we examine emerging trends and future directions in this rapidly evolving field.
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