Negative Refraction at Infrared Wavelengths in a Two-Dimensional Photonic Crystal

• We report on the first experimental evidence of negative refraction at telecommunication wavelengths by a two-dimensional photonic crystal field. Samples were fabricated by chemically assisted ion beam etching in the InP-based low-index constrast system. Experiments of beam imaging and light collection show light focusing by the photonic crystal field. Finite-difference time-domain simulations confirm that the observed focusing is due to negative refraction in the photonic crystal area.

Ämnesord

NATURVETENSKAP  -- Fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

Nyckelord

BAND-GAP; INDEX; PROPAGATION; LENS

Physics

Fysik

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)