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Are there materials that fluoresce at a shorter wavelength than what they absorb? I was under the impression that it was a one-way thing (absorb short wavelengt
by frankus 6y ago
Are there materials that fluoresce at a shorter wavelength than what they absorb? I was under the impression that it was a one-way thing (absorb short wavelength and emit longer wavelength).
- Armisael16 6y agoYes. Some materials absorb multiple photons for each one they emit and thus have enough energy to emit at shorter wavelengths. Cesium vapor is one (though probably not a good choice for this application!).