Near-Infrared and Optical Beam Steering and Frequency Splitting in Air-Holes-in-Silicon Inverse Photonic Crystals
[1];
- Institute of Electronic Structure and Laser, FORTH, 71110, Heraklion, Crete, Greece
- Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, United States
- Institute of Electronic Structure and Laser, FORTH, 71110, Heraklion, Crete, Greece, Department of Materials Science and Technology, University of Crete, 71003, Heraklion, Crete, Greece
- Institute of Electronic Structure and Laser, FORTH, 71110, Heraklion, Crete, Greece, Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, United States
Here, we present the design of a dielectric inverse photonic crystal structure that couples line-defect waveguide propagating modes into highly directional beams of controllable directionality. The structure utilizes a triangular lattice made of air holes drilled in an infinitely thick Si slab, and it is designed for operation in the near-infrared and optical regime. The structure operation is based on the excitation and manipulation of dark dielectric surface states, in particular on the tailoring of the dark states’ coupling to outgoing radiation. This coupling is achieved with the use of properly designed external corrugations. The structure adapts and matches modes that travel through the photonic crystal and the free space. Moreover it facilitates the steering of the outgoing waves, is found to generate well-defined, spatially and spectrally isolated beams, and may serve as a frequency splitting component designed for operation in the near-infrared regime and in particular the telecom optical wavelength band. The design complies with the state-of-the-art Si nanofabrication technology and can be directly scaled for operation in the optical regime.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-07CH11358; 320081
- OSTI ID:
- 1423696
- Alternate ID(s):
- OSTI ID: 1399580; OSTI ID: 1507997
- Report Number(s):
- IS-J-9467
- Journal Information:
- ACS Photonics, Journal Name: ACS Photonics Vol. 4 Journal Issue: 11; ISSN 2330-4022
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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