Upconverted emission spectra

Furthermore, the upconverted luminescence phenomena of Er and Sm " have been observed in YVO4 film. Fig. 5(b) shows the upconverted emission spectrum of Er excited with 800nm and that of Sm excited with 940nm. The characteristic green... 

Figure 7. A comparison of photodiode array multichannel detection to photomultiplier tube single channel detection for the upconverted emission spectrum of coumarin 520.

Photodiode Array Versus Photomultiplier Detection. The advantages of photodiode array detection, PDA, as compared to photomultiplier tube, pmt, detection for emission spectroscopy are well known (19). These advantages are especially important for the specific examples we discuss here, namely, upconverting emission spectroscopy. This is dramatically demonstrated in Figure 7 where we compare single channel pmt versus multichannel PDA detection of a small portion of the upconverted fluorescence spectrum of coumarin 520 in ethanol solvent at room temperature. 

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