Extended Data Fig. 7: Bichromatic experiments with different probe beam wavelengths. | Nature

Extended Data Fig. 7: Bichromatic experiments with different probe beam wavelengths.

From: Sensitization of silicon by singlet exciton fission in tetracene

Extended Data Fig. 7

The choice of the second pump wavelength (left, 785 nm; right, 632.8 nm) has no influence on the change in photoluminescence from the application of the magnetic field (about −2.0% for both secondary wavelengths). This excludes the possibility that any effects resulting from the choice of the second pump beam impair our determination of the exciton yield. The ratio of the flux density is calculated by comparing the number of incident photons per second from the two pump beams. The photon flux density of the 785 nm beam is 35 times larger than that of the 532 nm beam and the photon flux density of the 632.8 nm beam is 27 times larger than that of the 532 nm beam. Error bars are 1σ; n = 4,000.

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