From: mwlodarczyk0@gmail.com   
      
   W dniu czwartek, 5 maja 2016 05:11:49 UTC+2 użytkownik Di Yu napisał:   
   > Hi all,   
   > I wonder how fast a spectrometer can be? I viewed the BWTEK and Ocean   
   Optics' website, they can only provide the spectrometer measures less than   
   1000 times/second. However, I do see other confocal sensors use spectrometer   
   which can measure >66000 times/   
   second. But I cannot find any spectrometer measures that fast.    
   >    
   > So here is the question: How fast a spectrometer can measure? Do you have   
   some recommendations on high speed spectrometer? Wavelength is VIS 400-700 nm.   
   >    
   > Thank you very much!   
   >    
   > Di Yu   
   > the Institute of Optics   
   > University of Rochester   
      
   As Phil Hobbs mentioned, there are a lot of methods to make spectrometer   
   astonishingly fast, using quite unusual concepts.   
   Standard CCD spectrometer may be used with reading speed up to 20-100Mpix/s,   
   giving 20-100k spectra/s for detector containing 1000 pixel (giving resolution   
   around 0.5nm for VIS range). To collect more spectra per second, you can   
   reduce the number of    
   pixels (decreasing resolution) or read only a (intresting) part of the full   
   sensor at once.   
   Recently we made a spectrometer capable of >>10k spectra/s on 2048 pixel   
   sensor, and I can tell you that it wasn't a big deal.   
      
   regards,   
   Michal Wlodarczyk   
   Instytut Fotonowy sp. z o.o.   
      
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