A New Standard in High-Field Terahertz Generation: the Organic Nonlinear Optical Crystal PNPA,ACS Photonics

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A New Standard in High-Field Terahertz Generation: the Organic Nonlinear Optical Crystal PNPA
ACS Photonics ( IF 6.5 ) Pub Date : 2022-11-04 , DOI: 10.1021/acsphotonics.2c01336
Claire Rader ₁ , Zachary B. Zaccardi ₁ , Sin-Hang Enoch Ho ₁ , Kylie G. Harrell ₁ , Paige K. Petersen ₁ , Megan F. Nielson ₁ , Harrison Stephan ₁ , Natalie K. Green ₁ , Daisy J. H. Ludlow ₁ , Matthew J. Lutz ₁ , Stacey J. Smith ₁ , David J. Michaelis ₁ , Jeremy A. Johnson ₁

Affiliation

We report the full characterization of a new organic nonlinear optical (NLO) crystal for intense THz generation: PNPA ((E)-4-((4-nitrobenzylidene)amino)-N-phenylaniline). We discuss crystal growth and structural characteristics. We present the wavelength dependence of THz generation, the thickness dependence of the THz spectrum for PNPA crystals and measure the efficiency. PNPA enables intense THz generation that surpasses NLO crystals DAST and OH-1, which have been the standard in organic high-field THz generators for several years. With our experimental conditions, PNPA can generate a peak-to-peak field strength of 2.9 MV/cm compared to 2.2 and 1.5 MV/cm from DAST and OH-1, respectively. This corresponds to a THz generation efficiency exceeding 4%.

中文翻译：

高场太赫兹产生的新标准：有机非线性光学晶体 PNPA

我们报告了一种用于强烈太赫兹生成的新型有机非线性光学 (NLO) 晶体的完整表征：PNPA ((E)-4-((4-nitrobenzylidene)amino)- N -phenylaniline)。我们讨论晶体生长和结构特征。我们介绍了太赫兹产生的波长依赖性、PNPA 晶体的太赫兹光谱的厚度依赖性并测量了效率。PNPA 能够产生超过 NLO 晶体 DAST 和 OH-1 的强烈太赫兹，后者多年来一直是有机高场太赫兹发生器的标准。在我们的实验条件下，PNPA 可以产生 2.9 MV/cm 的峰峰值场强，而 DAST 和 OH-1 分别为 2.2 和 1.5 MV/cm。这对应于超过 4% 的太赫兹生成效率。

更新日期：2022-11-04

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