Chiral dichroism in bi-elliptical high-order harmonic generation
Chiral dichroism in bi-elliptical high-order harmonic generation
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DOI：
10.1088/1361-6455/aaae5e
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发表时间：
2018-03-28
影响因子：
1.6
通讯作者：
Smirnova, Olga
中科院分区：
文献类型：
--
作者：
Ayuso, David;Decleva, Piero;Smirnova, Olga
应用强双椭圆偏振激光场在有机分子中产生高次谐波，为手性识别和手性鉴别提供了极好的机会。这些场是通过将椭圆偏振基波（通常在红外范围内）与其反向旋转的二次谐波结合而形成的。本文对双椭圆场中手性分子环氧丙烷的谐波发射进行了理论研究。我们的计算包括，第一次在这样一个复杂的系统，准确的photorecomination矩阵元素，使用静态交换密度泛函理论方法进行评估。研究表明，在较宽的谐波数和椭圆度范围内，双椭圆光可以在手性分子的谐波光谱中诱导出较强的手性二向色性。
The application of strong bi-elliptically polarized laser fields to the generation of high-order harmonics in organic molecules offers exceptional opportunities for chiral recognition and chiral discrimination. These fields are made by combining an elliptically polarized fundamental, typically in the infrared range, with its counter-rotating second harmonic. Here we present a theoretical study of the harmonic emission from the chiral molecule propylene oxide in bi-elliptical fields. Our calculations include, for the first time in such a complex system, accurate photorecomination matrix elements, evaluated using the static-exchange density functional theory method. We show that bi-elliptical light can induce strong chiral dichroism in the harmonic spectra of chiral molecules in a broad range of harmonic numbers and ellipticities.