Controlling light emission by engineering atomic geometries in silicon photonics.

Area of Science:

• Quantum optics
• Nanophotonics
• Materials science

Background:

• Micro-resonators are crucial for manipulating light.
• Controlling atomic arrangements can influence optical properties.
• Erbium-doped materials are important for telecommunication wavelengths.

Purpose of the Study:

• To engineer atomic geometries within micro-resonators.
• To observe and analyze Bragg resonances induced by atomic lattices.
• To investigate the influence of atomic arrangement on light emission and scattering loss.

Main Methods:

• Fabrication of silicon nitride (SiN) microring resonators.
• Engineering of nearly 1000 atomic segments into specific lattice geometries.
• Optical characterization at telecommunication wavelengths to observe Bragg resonances and light emission.
• Analysis of Fano interference between resonant modes.

Main Results:

• Observation of Bragg resonances induced by the engineered atomic lattice at telecommunication wavelengths.
• Demonstrated reduction in scattering loss due to the specific geometrical arrangement of erbium atoms.
• Confirmed the dependency of light emission on atomic positions and lattice spacing.
• Observed Fano interference between resonant modes within the system.

Conclusions:

• Atomic lattice engineering in micro-resonators enables control over optical properties.
• This approach reduces scattering loss and enhances light emission at specific wavelengths.
• The findings open possibilities for novel photonic devices utilizing controlled atomic arrangements.