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Fiber optic spectrometer principle of optical path structure external trigger function

by:FOT     2020-06-26
Fiber optic spectrometer principle of optical path structure of external trigger function advantage of fiber optic equipment spectrometer principle system of modularization and flexibility. The United States ocean optics has miniature fiber optic equipment spectrometer measurement speed is very fast, it can be used for on-line analysis. Universal detector and choose due to its low cost, so the cost of the spectrometer is greatly reduced, thus greatly extend its application field. Series by micro optical fiber spectrometer machine platform, size is the size of business CARDS, not only convenient, more easily integrated into the various spectral analysis equipment. Fiber optic spectrometer principle, improve the structure of the optical path of the cross asymmetric C - T light path structure, middle wavelength eliminate coma; Table plane in inhibition of stray light treatment, eliminate the influence of secondary diffraction. Fiber optic spectrometer principle of external trigger function spectrum sampling including four trigger mode: normal mode, software trigger mode, synchronous trigger mode and external hardware trigger mode. For the fiber optic spectrometer, usually in the 200 - nm - spectral range 2200 nm. Due to demand higher resolution can be hard to get broad spectrum scope; At the same time, the higher the resolution requirements, its luminous flux will be less. For low resolution and wider spectral range, 300 lines/mm grating is usually the choice. If the requirement is high spectral resolution, you can select 3600 lines/mm grating, or choose more pixels resolution of the detector. A narrow slit can improve resolution, but less luminous flux. Broad slit, on the other hand, can increase the sensitivity, but lose resolution. In the different application requirements, choose the right slit width in order to optimize the whole test results. Detector is in some ways determines the sensitivity and resolution of the fiber optic equipment spectrometer, detector light sensitive area is limited in principle, it is divided into many small pixels for high resolution or divided into fewer but larger pixel for high sensitivity. Back light sensitive CCD detector sensitivity is usually better, to a certain extent, so it can get better resolution in the case of no sensitivity.
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