Tunable broadband light emission from graphene

被引：10

作者：

Ghirardini, Lavinia ^{[1
]}

Pogna, Eva A. A. ^{[1
,2
,3
]}

Soavi, Giancarlo ^{[4
,5
]}

Tomadin, Andrea ^{[6
]}

Biagioni, Paolo ^{[1
]}

Dal Conte, Stefano ^{[1
]}

Mignuzzi, Sandro ^{[4
]}

De Fazio, Domenico ^{[4
]}

Taniguchi, Takashi ^{[7
]}

Watanabe, Kenji ^{[8
]}

Duo, Lamberto ^{[1
]}

Finazzi, Marco ^{[1
]}

Polini, Marco ^{[6
]}

Ferrari, Andrea C. ^{[4
]}

Cerullo, Giulio ^{[1
]}

Celebrano, Michele ^{[1
]}

机构：

[1] Politecn Milan, Phys Dept, Piazza Leonardo Da Vinci 32, I-20133 Milan, Italy

[2] CNR, NANO, NEST, Piazza San Silvestro 12, I-56127 Pisa, Italy

[3] Scuola Normale Super Pisa, Piazza San Silvestro 12, I-56127 Pisa, Italy

[4] Univ Cambridge, Cambridge Graphene Ctr, 9 JJ Thomson Ave, Cambridge CB3 0FA, England

[5] Friedrich Schiller Univ Jena, Inst Solid State Phys, Max Wien Pl 1, D-07743 Jena, Germany

[6] Pisa Univ, Phys Dept, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy

[7] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan

[8] Natl Inst Mat Sci, Res Ctr Funct Mat, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan

来源：

2D MATERIALS | 2021年 / 8卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

graphene; hot photoluminescence; out of equilibrium electrons; hyperbolic phonons; electron-phonon cooling; third-harmonic generation; BORON-NITRIDE; RAMAN-SPECTROSCOPY; HIGH RESPONSIVITY; HIGH-SPEED; SCATTERING; SILICON; PHOTODETECTORS; GENERATION; PHOTONICS;

D O I：

10.1088/2053-1583/abf08d

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Graphene is an ideal material for integrated nonlinear optics thanks to its strong light-matter interaction and large nonlinear optical susceptibility. It has been used in optical modulators, saturable absorbers, nonlinear frequency converters, and broadband light emitters. For the latter application, a key requirement is the ability to control and engineer emission wavelength and bandwidth, as well as electronic temperature. Here, we demonstrate that the emission wavelength of graphene's broadband hot carrier photoluminescence can be tuned by integration in photonic cavities, while thermal management can be achieved by out-of-plane heat transfer to hexagonal boron nitride. Our results pave the way to graphene-based ultrafast broadband light emitters with tunable emission.

引用

页数：13

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