New Approach in Designing Raman Spectrometer with Variable Spectral Resolution (CROSBI ID 682088)
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Podaci o odgovornosti
Pavić, Ivan ; Bonković, Mirjana ; Šoda, Joško ; Ivanda, Mile
engleski
New Approach in Designing Raman Spectrometer with Variable Spectral Resolution
This work presents novel idea in constructing and manufacturing Raman Spectrometers with variable spectral resolution using zoom optics in the second collimating part of the spectrometer. By using such additional component gives a Raman spectrometer with a spectral resolution comparable to that of a much more expensive Raman spectrometer while preserving low initial costs making Raman spectrometers more affordable. The system is comprised of a 532nm lasers combined with first collimator, diffraction grating, NOTCH filter and a CCD “Starlight Express” detector atop which we implemented zoom objective (up to 6x) that serve as the second collimator that collect the scattered light on the detector. Using the zoom objective alongside computer program designed to take the zoom and pixel density into account we are able to obtain variable spectral resolutions: from the low spectral resolution useful for the detection of photoluminescence spectra and up to 6 times higher resolution that is appropriate for the detection of Raman spectra. Taking into account the possibility of adaptively changing both the zoom, and the angle of diffraction grating we are capable of gaining complete spectral Raman data of a test sample at high spectral resolution and photoluminescence spectra by using low spectral resolution option. The recorded Raman and photoluminescence spectra of different samples were compared with those recorded with expensive Dilor T64000 Raman spectrometer.
Raman spectrometer ; spectral resolution ; photoluminescence ; zoom objective ; CCD
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Podaci o prilogu
50-50.
2019.
objavljeno
Podaci o matičnoj publikaciji
978-953-97333-6-8
Podaci o skupu
Humboldt-Kolleg
poster
10.10.2019-11.10.2019
Zagreb, Hrvatska