Second-order nonlinear frequency conversion in InGaP-on-insulator waveguides

TY - JOUR

T1 - Second-order nonlinear frequency conversion in InGaP-on-insulator waveguides

AU - Ahler, Lucas Christesen

AU - Ulsig, Emil Zanchetta

AU - Stanton, Eric J.

AU - Godoy, Pedro Henrique

AU - Weight, Skyler K.

AU - Nader, Nima

AU - Leger, Alexandre Z.

AU - Degli Eredi, Iterio

AU - Mirin, Richard P.

AU - Volet, Nick

PY - 2025/6/1

Y1 - 2025/6/1

N2 - 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.

AB - 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.

KW - Nonlinear Optics

KW - InGaP-on-insulator

KW - Photonics

KW - Second-harmonic generation (SHG)

KW - Sum-frequency generation (SFG)

KW - Difference-frequency generation (DFG)

UR - http://www.scopus.com/inward/record.url?scp=105006667385&partnerID=8YFLogxK

U2 - 10.1364/OL.555573

DO - 10.1364/OL.555573

M3 - Journal article

SN - 0146-9592

VL - 50

SP - 3652

EP - 3655

JO - Optics Letters

JF - Optics Letters

IS - 11

ER -