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Mini-spectrometer enables accurate laser calibration.(TESTING/CHARACTERIZATION)(Brief article)
Advanced Materials & Processes, July, 2007
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A tiny device for calibrating or stabilizing precision lasers has been designed and demonstrated at the National Institute of Standards and Technology (NIST). The spectrometer is about the size of a green pea and consists of miniature optics, a microfabricated container for atoms in a gas, heaters and a photodetector, all within a cube about 10 millimeters on a side.
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The package could be used to calibrate laser instruments, or, if a miniature laser were included in the device, could serve as a wavelength or frequency reference. The key to the device is a tiny glass-and-silicon ...
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