1. MEMS swept-wavelength laser enables new OCT capabilities

    MEMS swept-wavelength laser enables new OCT capabilities

    Optical interferometry is sensitive and noninvasive, making optical coherence tomography (OCT) a valuable clinical diagnostic tool. OCT directs light to a target tissue, detects the reflection, and processes the reflection to reconstruct an image of subsurface structures. Although powerful, long acquisition times make some endoscopic imaging either impractical or impossible. The key to enabling new applications is to increase the A-scan speed—the acquisition speed of the depth profile at a single location. In swept-source OCT (SS-OCT), a light beam sweeps through a range of wavelengths and the reflected signal is processed to recover a depth profile at that point ...

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