Figure | Measurement of the spatial-spectral response of the miniature spectrometer. (IMAGE)
Caption
a Measured normalised intensity profiles at the image plane of the spectrometer for illumination wavelengths ranging from 490 nm to 690 nm in 10 nm steps (monochromator, profile position is indicated in Fig. 3b). b Sinc² fits of the intensity profiles from a. c Centre positions of the sinc² fits per wavelength. d Wavelength shift per micrometre deduced from c. e Linewidth simulation and measurement with a red or green laser, respectively. The measured full width at half maximum is indicated with a pair of arrows. The combination of measurements d and e yield a spectral resolution of 9.2 ± 1.1 nm at 532 nm and 17.8 ± 1.7 nm at 633 nm wavelength.
Credit
by Andrea Toulouse, Johannes Drozella, Simon Thiele, Harald Giessen, and Alois Herkommer
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