During the last three years, we started to replace our detection optical systems (monochromator with APD and spectrometer) by CCD detector systems to largely increase the S/N ratio, reduce acquisition times, and have a better flexibility of use. With these systems of detection we began to see physical properties which had never been seen before in research on the optical properties of semiconductor nanostructures.

Figure 3. 3 magnesium absorption lines from the sun during camera tests.

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