4 ms·
> To quantify this influence, the team applied their model to Terbium Gallium Garnet (TGG), a crystal widely used to measure the Faraday effect. They found that
by magphys 1y ago
> To quantify this influence, the team applied their model to Terbium Gallium Garnet (TGG), a crystal widely used to measure the Faraday effect. They found that the magnetic field of light accounts for about 17% of the observed rotation at visible wavelengths and up to 70% in the infrared range.
Nearly 20% seems already significant, but 70%?! that's massive.
- nrhrjrjrjtntbt 1y agoNice to see a graph of % magnetic priportion and log wavelength going from radio to gamma.
- CamperBob2 1y agoHow did no one notice that before, and what else have they (we) missed?
- gsf_emergency_6 1y agoIf I'd to guess: all that exp. characterization to-date has revealed no anomaly (See my other comment) This team might have looked at bandstructure. or not (they didn't say, & I'd guess not)
- gsf_emergency_6 1y agoSeems to be a minor typo . Paper: >17.5% of the measured value for Terbium-Gallium-Garnet (TGG) at 800 nm, and up to 75% at 1.3 µm. Here's what the crystal looks like https://www.photonchinaa.com/tgg-terbium-gallium-garnet/ https://www.photonchinaa.com/tgg-terbium-gallium-garnet/ Here's transmission plot (UV-IR) https://www.samaterials.com/terbium-gallium-garnet-crystal.html#:~:text=Terbium%20Gallium%20Garnet%20Crystal%20Transmission%20Curve https://www.samaterials.com/terbium-gallium-garnet-crystal.h... Note there's almost no effect on transmission Relevant? https://dspace.mit.edu/handle/1721.1/51819 https://dspace.mit.edu/handle/1721.1/51819
- sehansen 1y agoYes, the paper and magphys talks about rotation, not transmission.