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THz Generation and Detection by Fluorenone Based Organic Crystals
ACS Photonics ( IF 6.5 ) Pub Date : 2018-01-03 00:00:00 , DOI: 10.1021/acsphotonics.7b00792 Matteo Savoini 1 , Lucas Huber 1 , Herma Cuppen 2 , Elsa Abreu 1 , Martin Kubli 1 , Martin J. Neugebauer 1 , Yulong Duan 2 , Paul Beaud 3 , Jialiang Xu 4 , Theo Rasing 2 , Steven L. Johnson 1
ACS Photonics ( IF 6.5 ) Pub Date : 2018-01-03 00:00:00 , DOI: 10.1021/acsphotonics.7b00792 Matteo Savoini 1 , Lucas Huber 1 , Herma Cuppen 2 , Elsa Abreu 1 , Martin Kubli 1 , Martin J. Neugebauer 1 , Yulong Duan 2 , Paul Beaud 3 , Jialiang Xu 4 , Theo Rasing 2 , Steven L. Johnson 1
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Direct study and control of material properties using terahertz (THz) frequency pulses is an emerging subject with strong potential for future applications. One aspect of the development of THz-based techniques is the search for new materials that can efficiently convert higher frequency light into the THz-frequency range and serve to detect and characterize weak THz radiation with high sensitivity. Here, the capabilities of a new class of THz generators and detectors based on diphenylfluorenone (DPFO) crystals are explored. We demonstrate that DPFO crystals have an extremely large electro-optical coefficients centered at around f ≈ 1.5 THz which makes them ideal for THz detection at this frequency. Excitation with intense femtosecond near-infrared pulses leads to emission of narrow-band (Δf/f ≈ 20%) THz radiation near 1.5 THz. This frequency range does not overlap significantly with water vapor absorption lines, which allows for practical applications under ambient conditions.
中文翻译：
芴酮基有机晶体产生和检测太赫兹
使用太赫兹（THz）频率脉冲直接研究和控制材料特性是一个新兴的主题，具有未来应用的巨大潜力。基于太赫兹技术发展的一方面是寻找新材料，这些材料可以将高频光有效地转换为太赫兹频率范围，并以高灵敏度检测和表征弱太赫兹辐射。在这里，探索了基于二苯芴酮（DPFO）晶体的新型太赫兹发生器和检测器的功能。我们表明，DPFO晶体具有在约为中心的非常大的电光系数˚F ≈1.5赫兹，这使得它们非常适用于太赫兹检测在该频率。飞秒强烈的近红外脉冲激发导致发射窄带（Δf/ ˚F ≈20％）附近的THz 1.5 THz辐射。该频率范围与水蒸气吸收线没有明显重叠，这允许在环境条件下进行实际应用。
更新日期：2018-01-03
中文翻译：
芴酮基有机晶体产生和检测太赫兹
使用太赫兹（THz）频率脉冲直接研究和控制材料特性是一个新兴的主题，具有未来应用的巨大潜力。基于太赫兹技术发展的一方面是寻找新材料，这些材料可以将高频光有效地转换为太赫兹频率范围，并以高灵敏度检测和表征弱太赫兹辐射。在这里，探索了基于二苯芴酮（DPFO）晶体的新型太赫兹发生器和检测器的功能。我们表明，DPFO晶体具有在约为中心的非常大的电光系数˚F ≈1.5赫兹，这使得它们非常适用于太赫兹检测在该频率。飞秒强烈的近红外脉冲激发导致发射窄带（Δf/ ˚F ≈20％）附近的THz 1.5 THz辐射。该频率范围与水蒸气吸收线没有明显重叠，这允许在环境条件下进行实际应用。
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