Photonic jet
Revision as of 16:26, 5 October 2014 by Sylvain.lecler (talk | contribs)
Our team studies physics and applications of photonic jet since 2004.
What's a photonic jet? When ligth interacts with a dielectric microsphere, light is scattered in the far field. However in the near field, the same ligth can be highly concentrated. In the optimum case, the radiated power density can be concentrated more than 200 times in a propagative beam, having low divergence and a full width at half maximum smaller than the wavelength. This beam is a "photonic jet". Its physical laws are differents to the usual geometrical optics ones.
- Fichier:Jet R24 N15.jpg
Photonic Jet - E field - silica sphere of 24 µm - wavelength 1 µm
- Fichier:YAG jetphot.jpg
Setup
- Fichier:GravureParJetPhot.jpg
1.4 µm etching in Si using a 4 µm glass sphere