Enhancement of second-order optical nonlinearities and UV second harmonic generation from periodically poled boron-substituted aluminum nitride thin films

Albert Suceava; John Hayden; Kyle P. Kelley; Yihuang Xiong; Ismaila Dabo; Susan Trolier-McKinstry; Jon-Paul Maria; Venkatraman Gopalan

doi:10.1117/12.2677814

5 October 2023 Enhancement of second-order optical nonlinearities and UV second harmonic generation from periodically poled boron-substituted aluminum nitride thin films

Albert Suceava, John Hayden, Kyle P. Kelley, Yihuang Xiong, Ismaila Dabo, Susan Trolier-McKinstry, Jon-Paul Maria, Venkatraman Gopalan

Author Affiliations +

Proceedings Volume PC12652, UV and Higher Energy Photonics: From Materials to Applications 2023; PC1265202 (2023) https://doi.org/10.1117/12.2677814
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Abstract

The development of CMOS-compatible nonlinear optical materials is essential for the continued growth of integrated photonics. This work investigates B-substituted AlN as a novel material platform with suitability towards UV light generation using second harmonic generation. The linear and nonlinear optical properties are characterized as a function of B composition. An enhancement of second harmonic generation coefficients with B substitution is observed, accompanied by a minor reduction in the bandgap. A waveguide structure is fabricated and used to measure loss in sputter-deposited films. A quasi-phase-matched ferroelectric domain pattern is produced and efficient second harmonic generation of UV light demonstrated.

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Albert Suceava, John Hayden, Kyle P. Kelley, Yihuang Xiong, Ismaila Dabo, Susan Trolier-McKinstry, Jon-Paul Maria, and Venkatraman Gopalan "Enhancement of second-order optical nonlinearities and UV second harmonic generation from periodically poled boron-substituted aluminum nitride thin films", Proc. SPIE PC12652, UV and Higher Energy Photonics: From Materials to Applications 2023, PC1265202 (5 October 2023); https://doi.org/10.1117/12.2677814

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