Progress toward an efficient, uniformly scalable lithium niobate terahertz pulse source.

IF 3.1 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2025-07-01 DOI:10.1364/OL.563154

Gergő Krizsán, Bálint Jurasits, Gábor Almási, János Hebling

引用次数: 0

Abstract

We report significant progress in developing a compact, imaging-free, and scalable tilted-pulse-front-pumped (TPFP) terahertz (THz) source based on a nonlinear echelon slab. The slab thickness- and pump intensity-dependent THz generation efficiency have been characterized, reaching an efficiency of ∼0.085%, which is ∼2.8× higher than previously. The impact of microstructure quality shows that surface roughness reduces efficiency by lowering diffraction efficiency and increasing beam divergence. A simple theoretical model is introduced, which shows good agreement with experimental results and predicts significantly higher efficiency-exceeding 0.65% (2%) at room (cryogenic) temperature-with refined microstructure quality.

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高效、均匀可扩展的铌酸锂太赫兹脉冲源的研究进展。

我们报告了一种基于非线性梯级板的紧凑、无成像、可扩展的倾斜脉冲前泵浦（TPFP）太赫兹（THz）源的重大进展。薄片厚度和泵浦强度相关的太赫兹产生效率已经被表征，达到了~ 0.085%的效率，比以前高~ 2.8倍。微观结构质量的影响表明，表面粗糙度通过降低衍射效率和增加光束散度来降低效率。介绍了一个简单的理论模型，该模型与实验结果吻合良好，并预测了更高的效率-在室温（低温）下超过0.65%(2%)-并且微观结构质量精细。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

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.