High-order harmonic generation from wurtzitic and hexagonal BN

被引：2

作者：

Liu, Hao ^{[1
]}

Feng, Rongfang ^{[1
]}

Zhang, Qingyun ^{[2
]}

Shi, Fang ^{[3
]}

Zhang, Zhengzhong ^{[1
]}

机构：

[1] Huaiyin Inst Technol, Fac Appl Technol, Huaian 223003, Jiangsu, Peoples R China

[2] ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China

[3] Huaiyin Inst Technol, Jiangsu Key Lab Adv Mfg Technol, Huaian 223003, Jiangsu, Peoples R China

来源：

OPTICAL REVIEW | 2021年 / 28卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Wurtzitic and hexagonal boron nitride; Energy bands; High-order harmonic generation; TOTAL-ENERGY CALCULATIONS; IONIZATION; H-2(+);

D O I：

10.1007/s10043-021-00664-6

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this letter, the high-order harmonic generation (HHG) of wurtzitic and hexagonal boron nitride (h-BN) under ultrafast intense laser field was studied by solving an extended multiband semiconductor Bloch equations (SBEs). The results showed that for both the wurtzitic and hexagonal structures, the cutoff energy of the HHG was extended linearly by increasing the field strength, and the efficiency was suppressed as the wavelength of laser increased. It was worth noting that for hexagonal structure, the efficiency of HHG was 1-2 orders of magnitude higher than that of the wurtzitic structure. At the same time, the hexagonal structure significantly improved the cutoff energy of HHG from BN.

引用

页码：342 / 348

页数：7

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