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Scanning Electron Micrograph (SEM) of diffraction grating, an optical device consisting of a glass plate or a mirror with a large number of equidistant parallel lines or grooves on its surface; it is used to disperse a beam of light (or other electromagnetic radiation) into wavelengths to produce a spectrum. The spacing of the optical structure is 1.3 um peak to peak.
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Creative#:
TOP22230359
Source:
達志影像
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RM
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須由TPG 完整授權
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