2005/10/31 by Alexander L. Burin
Chemistry · Physics and Astronomy · #Absorption (acoustics) #Bound state #Chemistry #Condensed matter physics #Dielectric #Geometry #Laser #Materials science #Metal #Molecular physics #Optics #Optoelectronics #Orbital Angular Momentum in Optics #Perpendicular #Photonic Crystals and Applications #Physics #Polarization (electrochemistry) #Q factor #Quality (philosophy) #Quantum mechanics #Random lasers and scattering media #Refractive index #Rutile #Transverse plane #Upper and lower bounds #Whispering-gallery wave #physics.optics
paper · pdf · doi:10.1103/physreve.73.066614
Submitted to Physical Review E
arxiv created 2006/05/01 · openalex publication_date 2006/06/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Low-dimensional ordered arrays of optical elements can possess bound modes having an extremely high quality factor. Typically, these arrays consist of metal elements which have significantly high light absorption thus restricting performance. In this paper we address the following question: can bound modes be formed in dielectric systems where the absorption of light is negligible? Our investigation of circular arrays of spherical particles shows that (1) high quality modes in an array of ten or more particles can be attained at least for a refractive index n(r) > 2, so optical materials like TiO2 or GaAs can be used; (2) the most bound modes have nearly transverse polarization perpendicular to the circular plane; (3) in a particularly interesting case of TiO2 particles (rutile phase, n(r) = 2.7), the quality factor of the most bound mode increases almost by an order of magnitude with the addition of ten extra particles, while for particles made of GaAs the quality factor increases by almost two orders of magnitude with the addition of ten extra particles. We hope that this preliminary study will stimulate experimental investigations of bound modes in low-dimensional arrays of dielectric particles.