Lucas C Ahler, Emil Z Ulsig, Eric J Stanton, Pedro H Godoy, Skyler C Weight, Nima Nader, Alexandre Z Leger, Iterio Degli-Eredi, Richard P Mirin, Nicolas Volet
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Second-order nonlinear frequency conversion in InGaP-on-insulator waveguides.
InGaP integrated on a silicon substrate has emerged as a promising platform for nonlinear and quantum photonics, offering high nonlinear conversion efficiency and scalability with silicon-based fabrication infrastructure. This work presents an experimental demonstration of sum- and difference-frequency generation (DFG) in InGaP waveguides. We generate light at 930 nm, 1550 nm, and 2325 nm, achieving conversion efficiencies of 4.5 ± 0.5 W-1, 1.4 ± 0.2 W-1, and 0.43 ± 0.04 W-1, respectively. These results highlight the potential of InGaP-on-insulator for advanced photonic applications, including broadband infrared light generation and quantum-frequency conversion. We discuss a roadmap for this technology to achieve even broader wavelength coverage, higher efficiencies, and quantum-frequency conversion of single photons.
期刊介绍：
The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community.
Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.
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