A Laser beam is passed through a strong magnetic field.
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As previously said, this cannot happen in vacuum, because photons have no charge. However a beam *can* be deflected or focused by a magnetic field if it is propagating through something called a "magneto-optic" material. In fact, in the field of optics, we often *do* use magneto-optic materials, as well as electro-optic, acousto-optic, etc. to do just that. The advantage of using these materials rather than just a normal glass lens or normal mirror is that you can turn on and off the magnetic field (or electric field, sound wave, etc.) so that you are externally controlling whether or not the beam gets focused and/or deflected through the material.
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