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Related Experiment Video

Updated: Jun 5, 2026

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Second-harmonic generation in NbOI₂-integrated silicon nitride microdisk resonators.

Ning Liu¹, Qiang Liu¹, Yutian Lin¹

¹College of Advanced Interdisciplinary Studies & Hunan Provincial Key Laboratory of Novel Nanooptoelectronic Information Materials and Devices and Nanhu Laser Laboratory, National University of Defense Technology, Changsha 410073, China.

Nanophotonics (Berlin, Germany)

|December 22, 2025

Summary

Two-dimensional niobium oxide dihalides integrated with silicon nitride microdisk resonators demonstrate efficient second-harmonic generation. This breakthrough enables high-performance on-chip nonlinear optical devices using low-power lasers.

Keywords:

microdisks niobium oxide diiodides resonators second-harmonic generation silicon nitride

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Related Experiment Videos

Last Updated: Jun 5, 2026

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

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Published on: July 12, 2017

Fabrication and Characterization of High-Q Silicon Nitride Membrane Resonators

Fabrication and Characterization of High-Q Silicon Nitride Membrane Resonators

Published on: August 8, 2025

Area of Science:

Materials Science
Photonics
Nanoscience

Background:

Two-dimensional (2D) niobium oxide dihalides exhibit significant second-order nonlinear optical properties.
Integrating these 2D materials with optical microcavities is key for advanced on-chip nonlinear optics.

Purpose of the Study:

To demonstrate efficient second-harmonic generation in 2D niobium oxide dihalide-integrated microcavities.
To develop a material-photon co-design strategy for on-chip nonlinear light sources.

Main Methods:

Fabrication of niobium oxyiodide (NbOI2)-integrated silicon nitride (Si3N4) microdisk resonators.
Utilizing a van der Waals transfer technique for material integration.
Characterization of second-harmonic generation under continuous-wave laser pumping.

Main Results:

Achieved second-harmonic generation with sub-milliwatt continuous-wave laser pumping.
Calculated a device conversion efficiency of approximately 0.024%/W.
Demonstrated the advantage of NbOI2's intrinsic non-centrosymmetric structure, simplifying material selection.

Conclusions:

Established a viable material-photon co-design for on-chip nonlinear light sources.
Laid a foundation for advancing quantum photonic chips and on-chip metrology.
Highlighted the potential of 2D niobium oxide dihalides for integrated photonics.