Recent Advances in Nonlinear Optical and Electro-Optical Materials

Chen, Chuangtian; Liu, Guangzhao

doi:10.1146/annurev.ms.16.080186.001223

Cited by 542 publications

(282 citation statements)

References 2 publications

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“…Calculations on the crystals with distorted octahedral MO 6 units showed that such a model gave a perfect fit to the experimental results [16,17].…”

Section: Introductionmentioning

confidence: 99%

On the Anionic Group Approximation to the Borate Nonlinear Optical Materials

2017

Crystals

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Abstract:In this mini-review type of article, a brief summary of the anionic group approximation as it relates to the borate nonlinear optical (NLO) crystals, an idea firstly proposed by Professor Chen, is presented. The basic idea, calculation method, tabulated coefficients of various common borate, as well as nitrate or carbonate groups, in their ideal geometries will be presented. New practices reveal that those parameters can still give very accurate predicted NLO coefficients for recently found NLO crystals without any adjustment of parameters.

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“…Calculations on the crystals with distorted octahedral MO 6 units showed that such a model gave a perfect fit to the experimental results [16,17].…”

Section: Introductionmentioning

confidence: 99%

On the Anionic Group Approximation to the Borate Nonlinear Optical Materials

2017

Crystals

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“…The structure of KRABO is almost the same as KABO, which contains BO 3 and AlO 4 as basic anionic groups. According to the anionic group theory, which was proposed by Professor Chen in the 1970s [21][22][23], the overall SHG efficiency is the geometrical superposition of the microscopic second-order susceptibilities of the anionic groups. In KABO, the major contributions to SHG efficiency are from the coplanar BO 3 groups and AlO 4 groups by first-principles calculations [24].…”

Section: Nlo Propertiesmentioning

confidence: 99%

Structure and Optical Properties of K0.67Rb1.33Al2B2O7 Crystal

et al. 2017

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“…[1][2][3] One of the key concepts for signal processing is the ultrafast polarization flip of an optical pulse by an electro-optical (EO) modulator. State-of-the-art modulators are driven by an electric gating pulse of several kilovolts per cm which induces a strong phase shift on the optical pulse due to the electric-field dependent Pockels effect.…”

Section: Introductionmentioning

confidence: 99%

Extreme nonlinear terahertz electro-optics in diamond for ultrafast pulse switching

2017

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Polarization switching of picosecond laser pulses is a fundamental concept in signal processing [C. Chen and G. Liu, Annu. Rev. Mater. Sci. 16, 203 (1986); V. R. Almeida et al., Nature 431, 1081 (2004); and A. A. P. Pohl et al., Photonics Sens. 3, 1 (2013)]. Conventional switching devices rely on the electro-optical Pockels effect and work at radio frequencies. The ensuing gating time of several nanoseconds is a bottleneck for faster switches which is set by the performance of state-of-the-art high-voltage electronics. Here we show that by substituting the electric field of several kV/cm provided by modern electronics by the MV/cm field of a single-cycle THz laser pulse, the electro-optical gating process can be driven orders of magnitude faster, at THz frequencies. In this context, we introduce diamond as an exceptional electro-optical material and demonstrate a pulse gating time as fast as 100 fs using sub-cycle THz-induced Kerr nonlinearity. We show that THz-induced switching in the insulator diamond is fully governed by the THz pulse shape. The presented THz-based electro-optical approach overcomes the bandwidth and switching speed limits of conventional MHz/GHz electronics and establishes the ultrafast electro-optical gating technology for the first time in the THz frequency range. We finally show that the presented THz polarization gating technique is applicable for advanced beam diagnostics. As a first example, we demonstrate tomographic reconstruction of a THz pulse in three dimensions.

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Recent Advances in Nonlinear Optical and Electro-Optical Materials

Cited by 542 publications

References 2 publications

On the Anionic Group Approximation to the Borate Nonlinear Optical Materials

On the Anionic Group Approximation to the Borate Nonlinear Optical Materials

Structure and Optical Properties of K0.67Rb1.33Al2B2O7 Crystal

Extreme nonlinear terahertz electro-optics in diamond for ultrafast pulse switching

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