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Arbitrarily directed emission of integrated cylindrical vector vortex beams by geometric phase engineering
Optics Letters
|December 16, 2020
Summary
Engineers can control the emission angle of integrated cylindrical vector vortex (CVV) emitters using microring resonators. This innovation is key for chip-scale applications in nonlinear optics and beam steering with orbital angular momentum.
Area of Science:
- Optics and Photonics
- Quantum Technologies
- Nanophotonics
Background:
- Integrated cylindrical vector vortex (CVV) emitters are crucial for advanced optical applications.
- Controlling the emission angle of these emitters is essential for chip-scale integration.
Purpose of the Study:
- To demonstrate engineering the emission angle of integrated CVV emitters.
- To explore methods for superimposing arbitrary phase profiles onto CVV emitters.
- To enable new applications in integrated nonlinear optics and beam steering.
Main Methods:
- Utilizing the geometrical phase of a microring resonator to control emission angle.
- Presenting and comparing two distinct methods for phase profile superposition.
- Fabricating and characterizing integrated CVV emitters with engineered emission.
Main Results:
- Successfully demonstrated control over the emission angle of integrated CVV emitters.
- Showcased two effective methods for phase superposition, enabling arbitrary phase profiles.
- Verified the capability for angled emission of vector vortex beams from chip-scale devices.
Conclusions:
- Microring resonators offer a viable platform for engineering the emission angle of integrated CVV emitters.
- Angled emission of integrated CVV emitters opens possibilities for compact nonlinear optical devices.
- This technique facilitates beam steering applications utilizing orbital angular momentum on a chip.
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