Terahertz Pulse Generation with Binary Phase Control in Nonlinear InAs Metasurface

被引：23

作者：

Jung, Hyunseung ^{[2
,3
]}

Hale, Lucy L. ^{[1
]}

Gennaro, Sylvain D. ^{[2
,3
]}

Briscoe, Jayson ^{[2
,3
]}

Iyer, Prasad P. ^{[2
,3
]}

Doiron, Chloe F. ^{[2
,3
]}

Harris, C. Thomas ^{[2
,3
]}

Luk, Ting Shan ^{[2
,3
]}

Addamane, Sadhvikas J. ^{[2
,3
]}

Reno, John L. ^{[2
,3
]}

Brener, Igal ^{[2
,3
]}

Mitrofanov, Oleg ^{[1
,2
]}

机构：

[1] UCL, Elect & Elect Engn, London WC1E 7JE, England

[2] Sandia Natl Labs, Albuquerque, NM 87123 USA

[3] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87123 USA

来源：

NANO LETTERS | 2022年 / 22卷 / 22期

基金：

英国工程与自然科学研究理事会;

关键词：

terahertz; nonlinear optics; metasurface; spectroscopy; nanofabrication; EMISSION; RECTIFICATION; EXCITATION;

D O I：

10.1021/acs.nanolett.2c03456

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The effect of terahertz (THz) pulse generation has revolutionized broadband coherent spectroscopy and imaging at THz frequencies. However, THz pulses typically lack spatial structure, whereas structured beams are becoming essential for advanced spectroscopy applications. Nonlinear optical metasurfa-ces with nanoscale THz emitters can provide a solution by defining the beam structure at the generation stage. We develop a nonlinear InAs metasurface consisting of nanoscale optical resonators for simultaneous generation and structuring of THz beams. We find that THz pulse generation in the resonators is governed by optical rectification. It is more efficient than in ZnTe crystals, and it allows us to control the pulse polarity and amplitude, offering a platform for realizing binary-phase THz metasurfaces. To illustrate this capability, we demonstrate an InAs metalens, which simultaneously generates and focuses THz pulses. The control of spatiotemporal structure using nanoscale emitters opens doors for THz beam engineering and advanced spectroscopy and imaging applications.

引用

页码：9077 / 9083

页数：7

共 45 条

[41] Terahertz pulse shaping using diffractive surfaces [J].

Veli, Muhammed ;

Mengu, Deniz ;

Yardimci, Nezih T. ;

Luo, Yi ;

Li, Jingxi ;

Rivenson, Yair ;

Jarrahi, Mona ;

Ozcan, Aydogan .

NATURE COMMUNICATIONS, 2021, 12 (01)

[42]

Watts CM, 2014, NAT PHOTONICS, V8, P605, DOI [10.1038/nphoton.2014.139, 10.1038/NPHOTON.2014.139]

[43] Phased-array sources based on nonlinear metamaterial nanocavities [J].

Wolf, Omri ;

Campione, Salvatore ;

Benz, Alexander ;

Ravikumar, Arvind P. ;

Liu, Sheng ;

Luk, Ting S. ;

Kadlec, Emil A. ;

Shaner, Eric A. ;

Klem, John F. ;

Sinclair, Michael B. ;

Brener, Igal .

NATURE COMMUNICATIONS, 2015, 6

[44] TERAHERTZ BEAM GENERATION BY FEMTOSECOND OPTICAL PULSES IN ELECTROOPTIC MATERIALS [J].

XU, L ;

ZHANG, XC ;

AUSTON, DH .

APPLIED PHYSICS LETTERS, 1992, 61 (15) :1784-1786

[45] Nonlinear Fano-Resonant Dielectric Metasurfaces [J].

Yang, Yuanmu ;

Wang, Wenyi ;

Boulesbaa, Abdelaziz ;

Kravchenko, Ivan I. ;

Briggs, Dayrl P. ;

Puretzky, Alexander ;

Geohegan, David ;

Valentine, Jason .

NANO LETTERS, 2015, 15 (11) :7388-7393

← 1 2 3 4 5 →