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Three-Dimensional Phase Modulator at Telecom Wavelength Acting as a Terahertz Detector with an Electro-Optic Bandwidth of 1.25 Terahertz
ACS Photonics ( IF 6.5 ) Pub Date : 2018-02-21 00:00:00 , DOI: 10.1021/acsphotonics.7b01407 Ileana-Cristina Benea-Chelmus 1 , Tianqi Zhu 1 , Francesca Fabiana Settembrini 1 , Christopher Bonzon 1 , Elena Mavrona 1 , Delwin L. Elder 2 , Wolfgang Heni 3 , Juerg Leuthold 3 , Larry R. Dalton 2 , Jérôme Faist 1
ACS Photonics ( IF 6.5 ) Pub Date : 2018-02-21 00:00:00 , DOI: 10.1021/acsphotonics.7b01407 Ileana-Cristina Benea-Chelmus 1 , Tianqi Zhu 1 , Francesca Fabiana Settembrini 1 , Christopher Bonzon 1 , Elena Mavrona 1 , Delwin L. Elder 2 , Wolfgang Heni 3 , Juerg Leuthold 3 , Larry R. Dalton 2 , Jérôme Faist 1
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We report a thin film phase modulator employing organic nonlinear optical molecules, with an electro-optic bandwidth of 1.25 THz. The device acts as a polarization sensitive broadband Pockels medium for coherent electric field detection in a dual wavelength terahertz time-domain spectroscopy setup in the telecom band at 1550 nm. To increase the sensitivity, we combine a three-dimensional bow-tie antenna structure with strongly electro-optically active molecules JRD1 in poly(methyl methacrylate) supporting polymer. The antenna provides subwavelength field confinement of the terahertz wave with its waveguide gap with lateral dimensions of 2.2 μm × 5 μm × 4 μm. In the gap, the electric field is up to 150× stronger than in a diffraction limited space-time volume, such that an interaction length of only 4 μm suffices for the detection of fields below 10 V/m. This device is promising in the growing field of quantum optics in the terahertz, single photon terahertz detection, nonlinear imaging, and on-chip telecommunication.
中文翻译：
电信波长的三维相位调制器充当太赫兹检测器，电光带宽为1.25太赫兹
我们报告了采用有机非线性光学分子的薄膜相位调制器，其电光带宽为1.25 THz。该设备充当偏振敏感宽带Pockels介质，用于在1550 nm的电信频段中的双波长太赫兹时域光谱仪中进行相干电场检测。为了提高灵敏度，我们将三维领结天线结构与聚甲基丙烯酸甲酯支持聚合物中的强电光活性分子JRD1结合在一起。天线提供太赫兹波的子波长场限制，其波导间隙的横向尺寸为2.2μm×5μm×4μm。在间隙中，电场强度比在衍射极限时空体积中高150倍，因此，仅4μm的相互作用长度就足以检测10 V / m以下的电场。该器件在太赫兹量子光学，单光子太赫兹检测，非线性成像和片上电信领域不断发展的领域中很有希望。
更新日期：2018-02-21
中文翻译：
电信波长的三维相位调制器充当太赫兹检测器，电光带宽为1.25太赫兹
我们报告了采用有机非线性光学分子的薄膜相位调制器，其电光带宽为1.25 THz。该设备充当偏振敏感宽带Pockels介质，用于在1550 nm的电信频段中的双波长太赫兹时域光谱仪中进行相干电场检测。为了提高灵敏度，我们将三维领结天线结构与聚甲基丙烯酸甲酯支持聚合物中的强电光活性分子JRD1结合在一起。天线提供太赫兹波的子波长场限制，其波导间隙的横向尺寸为2.2μm×5μm×4μm。在间隙中，电场强度比在衍射极限时空体积中高150倍，因此，仅4μm的相互作用长度就足以检测10 V / m以下的电场。该器件在太赫兹量子光学，单光子太赫兹检测，非线性成像和片上电信领域不断发展的领域中很有希望。
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