Continuous-Wave Second-Harmonic Generation in Orientation-Patterned Gallium Phosphide Waveguides at Telecom Wavelengths,ACS Photonics

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Continuous-Wave Second-Harmonic Generation in Orientation-Patterned Gallium Phosphide Waveguides at Telecom Wavelengths
ACS Photonics ( IF 6.5 ) Pub Date : 2022-05-13 , DOI: 10.1021/acsphotonics.2c00156
Konstantinos Pantzas ₁ , Sylvain Combrié ₂ , Myriam Bailly _{1,

2} , Raphaël Mandouze ₂ , Francesco Rinaldo Talenti _{2,

3} , Abdelmounaim Harouri ₁ , Bruno Gérard ₄ , Grégoire Beaudoin ₁ , Luc Le Gratiet ₁ , Gilles Patriarche ₁ , Alfredo De Rossi ₂ , Yoan Léger ₅ , Isabelle Sagnes ₁ , Arnaud Grisard ₂

Affiliation

A new process to produce orientation-patterned gallium phosphide (OP-GaP) on GaAs with almost perfectly parallel domain boundaries is presented. Taking advantage of the chemical selectivity between phosphides and arsenides, OP-GaP is processed into suspended shallow-ridge waveguides. Efficient second-harmonic generation from telecom wavelengths is achieved in both Type-I and Type-II polarisation configurations. The highest observed conversion efficiency is 200% W^–1 cm^–2, with a bandwidth of 2.67 nm in a 1 mm-long waveguide. The variation of the conversion efficiency with wavelength closely follows a squared cardinal sine function, in excellent agreement with theory, confirming the good uniformity of the poling period over the entire length of the waveguide.

中文翻译：

电信波长下定向图案化磷化镓波导中的连续波二次谐波产生

提出了一种在具有几乎完全平行的畴边界的 GaAs 上生产定向图案化磷化镓 (OP-GaP) 的新工艺。利用磷化物和砷化物之间的化学选择性，将OP-GaP加工成悬浮的浅脊波导。在 Type-I 和 Type-II 偏振配置中实现了从电信波长高效生成二次谐波。观察到的最高转换效率为 200% W ^–1 cm ^–2，在 1 mm 长的波导中带宽为 2.67 nm。转换效率随波长的变化密切遵循平方基正弦函数，与理论非常吻合，证实了波导整个长度上极化周期的良好均匀性。

更新日期：2022-05-13

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