Recent progress of near-field studies of two-dimensional polaritonics

Jia-Hua Duan; Jia-Ning Chen

doi:10.7498/aps.68.20190341

Journals >Acta Physica Sinica >Volume 68 >Issue 11 >Page 110701-1 > Article

Acta Physica Sinica
Vol. 68, Issue 11, 110701-1 (2019)

Recent progress of near-field studies of two-dimensional polaritonics

Jia-Hua Duan^1、2 and Jia-Ning Chen^{1、2、3、4、*}

Author Affiliations

¹Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

²School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

³Beijing National Laboratory for Condensed Matter Physics, Beijing 100190, China

⁴Songshan Lake Materials Laboratory, Dongguan 523808, China

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DOI: 10.7498/aps.68.20190341 Cite this Article

Jia-Hua Duan, Jia-Ning Chen. Recent progress of near-field studies of two-dimensional polaritonics[J]. Acta Physica Sinica, 2019, 68(11): 110701-1 Copy Citation Text

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Abstract

Due to the capability of nanoscale manipulation of photons and tunability of light-matter interaction, polaritonics has attracted much attention in the modern physics. Compared with traditional noble metals, two-dimensional van der Waals materials provide an ideal platform for polaritons with high confinement and tunability. Recently, the development of scanning near-field optical microscopy has revealed various polaritons, thereby paving the way for further studying the quantum physics and nano-photonics. In this review paper, we summarize the new developments in two-dimensional polaritonics by near-field optical approach. According to the introduction of near-field optics and its basic principle, we show several important directions in near-field developments of two-dimensional polaritonics, including plasmon polaritons, phonon polaritons, exciton polaritons, hybridized polaritons, etc. In the final part, we give the perspectives in development of near-field optics.

Keywords

near-field optics polaritons two-dimensional materials

$\Delta x \cdot \Delta {k_x} \geqslant 2{\text{π}},$

(1)

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$\Delta {k_x} = {{{k}}_{\bf{1}}} - {{{k}}_{\bf{2}}} = 2k{\rm{sin}}\theta , $

(2)

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$ \begin{split} {E_{{\rm{total}}}} ={}& \mathop \sum \nolimits_n {K_n}{\rm{exp}}\left( {{\rm{i}}n\varOmega t} \right), \\ {K_n} ={}& {\sigma _n} + {\sigma _{{\rm{BG}}, n}}\;, \end{split} $

(3)

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${u_n} = \alpha \mathop \sum \nolimits_{i \geqslant n} {K_{i - n}}K_i^* + K_{i - n}^*{K_i}, $

(4)

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$\begin{split}\, & {u_n}= \alpha \left( {{K_0}K_n^* + K_0^*{K_n}} \right) \\ \approx &\; \alpha \left[ {{\sigma _{{\rm{BG}}, 0}}\left( {\sigma _n^* + \sigma _{{\rm{BG}}, n}^*} \right) \!+\! \sigma _{{\rm{BG}}, 0}^*\left( {{\sigma _n} \!+\! {\sigma _{{\rm{BG}}, n}}} \right)} \right],\end{split}$

(5)

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${\sigma _{{\rm{BG}}, n}} \approx 0\quad\left( {n \geqslant 2} \right), $

(6)

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${u_n} \approx \left( {{\sigma _{{\rm{BG}}, 0}}\sigma _n^* + \sigma _{{\rm{BG}}, 0}^*{\sigma _n}} \right), $

(7)

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${E_{{\rm{total}}}} = {E_{{\rm{NF}}}} + {E_{{\rm{BG}}}} + {E_{{\rm{Ref}}}}.$

(8)

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${E_{{\rm{Ref}}}} = A{\rm{exp}}\left[ {{\rm{i}}\gamma \sin \left( {Mt} \right) + {\rm{i}}{\varphi _{{\rm{Ref}}}}} \right], $

(9)

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$\begin{split} &{E_{{\rm{Ref}}}} = \mathop \sum \nolimits_m {A_m}\exp \left( {{\rm{i}}mMt} \right), \\ &{A_m} = A \cdot {{\rm{J}}_m}\left( \gamma \right){\rm{exp}}\left( {{\rm{i}}{\varphi _{{\rm{Ref}}}} + {\rm{i}}m\frac{\text{π}}{2}} \right),\end{split}$

(10)

Jia-Hua Duan, Jia-Ning Chen. Recent progress of near-field studies of two-dimensional polaritonics[J]. Acta Physica Sinica, 2019, 68(11): 110701-1

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