Microscopic study of resonant third-harmonic generation from amorphous silicon nanodisk arrays

被引：14

作者：

Deka, Jayanta ^{[1
]}

Jha, Keshav Kumar ^{[1
]}

Menon, Sruti ^{[1
]}

Krishna, A. S. Lal ^{[1
]}

Biswas, Rabindra ^{[1
]}

Raghunathan, Varun ^{[1
]}

机构：

[1] Indian Inst Sci IISc, Elect Commun Engn ECE Dept, Bangalore 560012, Karnataka, India

来源：

OPTICS LETTERS | 2018年 / 43卷 / 21期

关键词：

3RD HARMONIC-GENERATION; NANOPARTICLES DRIVEN; MODE RESONANCE; ANAPOLE MODE; NANOSTRUCTURES;

D O I：

10.1364/OL.43.005242

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A detailed microscopic study of third-harmonic generation (THG) from two-dimensional arrays of sub-wavelength spaced amorphous silicon nanodisks is reported. The arrays are designed to support broadband, minimally angle-sensitive resonances for the fundamental excitation wavelength in the 1500 nm region. This results in resonantly enhanced visible THG in the green spectral range with similar to 500-fold enhancement on-resonance, compared to the un-patterned a-Si thin-film. THG multispectral microscopic imaging reveals individual nanodisks with enhanced non-linear signal on-resonance. For increasing pump intensities, spatially dependent saturation effects are observed for the first time, to the best of our knowledge, in such dielectric nanostructure arrays with THG images showing a reversal of contrast. (C) 2018 Optical Society of America

引用

页码：5242 / 5245

页数：4

共 17 条

[1] An electromagnetic multipole expansion beyond the long-wavelength approximation [J].

Alaee, Rasoul ;

Rockstuhl, Carsten ;

Fernandez-Corbaton, I. .

OPTICS COMMUNICATIONS, 2018, 407 :17-21

[2]

Bohren C. F., 1983, Absorption and Scattering of Light by Small Particles, DOI 10.1002/9783527618156

[3] Efficient Third Harmonic Generation and Nonlinear Subwavelength Imaging at a Higher-Order Anapole Mode in a Single Germanium Nanodisk [J].

Grinblat, Gustavo ;

Li, Yi ;

Nielsen, Michael P. ;

Oulton, Rupert F. ;

Maier, Stefan A. .

ACS NANO, 2017, 11 (01) :953-960

[4] Enhanced Third Harmonic Generation in Single Germanium Nanodisks Excited at the Anapole Mode [J].

Grinblat, Gustavo ;

Li, Yi ;

Nielsen, Michael P. ;

Oulton, Rupert F. ;

Maier, Stefan A. .

NANO LETTERS, 2016, 16 (07) :4635-4640

[5] Wideband dielectric metamaterial reflectors: Mie scattering or leaky Bloch mode resonance? [J].

Ko, Yeong Hwan ;

Magnusson, Robert .

OPTICA, 2018, 5 (03) :289-294

[6]

Kuyken B, 2011, OPT EXPRESS, V19, P146

[7]

Masters B.R., 2008, Handbook of biomedical nonlinear optical microscopy

[8] Third-harmonic UV generation in silicon nitride nanostructures [J].

Ning, Tingyin ;

Hyvarinen, Outi ;

Pietarinen, Henna ;

Kaplas, Tommi ;

Kauranen, Martti ;

Genty, Goery .

OPTICS EXPRESS, 2013, 21 (02) :2012-2017

[9] Ultrafast All-Optical Switching with Magnetic Resonances in Nonlinear Dielectric Nanostructures [J].

Shcherbakov, Maxim R. ;

Vabishchevich, Polina P. ;

Shorokhov, Alexander S. ;

Chong, Katie E. ;

Choi, Duk-Yong ;

Staude, Isabelle ;

Miroshnichenko, Andrey E. ;

Neshev, Dragomir N. ;

Fedyanin, Andrey A. ;

Kivshar, Yuri S. .

NANO LETTERS, 2015, 15 (10) :6985-6990

[10] Nonlinear Interference and Tailorable Third-Harmonic Generation from Dielectric Oligomers [J].

Shcherbakov, Maxim R. ;

Shorokhov, Alexander S. ;

Neshev, Dragomir N. ;

Hopkins, Ben ;

Staude, Isabelle ;

Melik-Gaykazyan, Elizaveta V. ;

Ezhov, Alexander A. ;

Miroshnichenko, Andrey E. ;

Brener, Igal ;

Fedyanin, Andrey A. ;

Kivshar, Yuri S. .

ACS PHOTONICS, 2015, 2 (05) :578-582

← 1 2 →