Title :
Subdiffraction and spatial filtering due to periodic spatial modulation of the gain/loss profile
Author :
Staliunas, Kestutis ; Herrero, Ramon ; Vilaseca, Ramon
Author_Institution :
Dept. de Fis. i Eng. Nucl., Univ. Politec. de Catalunya, Terrassa, Spain
Abstract :
It is well known, that the materials with the refractive index modulated in space on the wavelength scale, i.e. the photonic crystals (PCs), bring about a significant modification of the propagation properties of waves, both in time and space domains. In time domain the usual (temporal) dispersion is modified, and photonic band gaps appear in the frequency spectra. In the space domain, the spatial dispersion (diffraction) can also be modified, which leads to negative diffraction, also to self-collimation (also called diffractionless or subdiffractive propagation.
Keywords :
light diffraction; optical dispersion; photonic crystals; refractive index; spatial light modulators; frequency spectra; negative diffraction; periodic spatial modulation; photonic band gaps; photonic crystals; propagation properties; refractive index; self-collimation; space domain; spatial diffraction; spatial dispersion; spatial filtering; subdiffraction; subdiffractive propagation; temporal dispersion; Crystalline materials; Diffraction; Filtering; Frequency; Optical losses; Optical modulation; Personal communication networks; Photonic band gap; Photonic crystals; Refractive index;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5192332