Coherent FIR/THz wave generation and steering via surface-emitting thin film lithium niobate waveguides

被引：5

作者：

Yoshioka, Valerie ^{[1
]}

Jin, Jicheng ^{[1
]}

Zhen, Bo ^{[1
]}

机构：

[1] Univ Penn, Dept Phys & Astron, 209 S 33rd St, Philadelphia, PA 19104 USA

来源：

OPTICS EXPRESS | 2024年 / 32卷 / 01期

关键词：

TERAHERTZ GENERATION; COEFFICIENTS; THZ;

D O I：

10.1364/OE.506395

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Generating narrowband, continuous wave FIR/THz light via difference frequency generation (DFG) remains challenging due to material absorption and dispersion from optical phonons. The relatively new platform of thin film lithium niobate enables high -confinement nonlinear waveguides, reducing device size and potentially improving efficiency. We simulated surface -emitting DFG from 10 to 100 THz in a thin film lithium niobate waveguide with fixed poling period, demonstrating reasonable efficiency and bandwidth. Furthermore, adjusting wavelength and relative phase in an array of these waveguides enables beam steering along two directions. Continuous wave FIR/THz light can be efficiently generated and steered using these integrated devices. (c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：639 / 651

页数：13

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