Open AccessDesign of photonic-crystal surface-emitting lasers with circularly-polarized beam
Author(s) -
Masashi Nishimoto,
Kyohei Maekawa,
Susumu Noda
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.006104
Subject(s) - optics , photonic crystal , circular polarization , oblique case , prism , polarization (electrochemistry) , tilt (camera) , materials science , laser , polarization rotator , physics , optoelectronics , birefringence , philosophy , linguistics , chemistry , microstrip , mechanical engineering , engineering
We propose new structure of photonic-crystal surface-emitting lasers with oblique-triangular-prism-shaped air holes for direct emission of circularly polarized beam. We show appropriate height and tilt angle of oblique-triangular-prism-shaped air holes to achieve high degree of polarization. Secondly, we investigate the influence of cavity length. High degree of polarization can be obtained by appropriate air-hole shape and cavity length. We also show that right-handed or left-handed circular polarization can be chosen by changing tilt direction of air holes.