  At optical frequencies due to the small value of the magnetic permeability of
natural materials, the magnetic effects are week. To this end, the natural
dielectric materials are unemployable for practical magnetic applications in
optics. We have shown that it is possible to induce the intense magnetic hot
spots in a Janus dielectric mesoscale particle. The basic idea of the Janus
particle based on a combination of the effects of a photonic jet, whispering
gallery waves and the concept of solid immersion. Simulations show that H^2/E^2
contrast maybe more 10 and maximal magnetic field intensity enhancement is more
than 1000 for a wavelength-scaled particle with refractive index less than 2.

Optics