Ultra-strong nonlinear optical processes and trigonal warping in MoS2 layers

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Ultra-strong nonlinear optical processes and trigonal warping in MoS2 layers. / Säynätjoki, Antti; Karvonen, Lasse; Rostami, Habib; Autere, Anton; Mehravar, Soroush; Lombardo, Antonio; Norwood, Robert A.; Hasan, Tawfique; Peyghambarian, Nasser; Lipsanen, Harri; Kieu, Khanh; Ferrari, Andrea C.; Polini, Marco; Sun, Zhipei.

In: Nature Communications, Vol. 8, No. 1, 893, 01.12.2017.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Säynätjoki, A, Karvonen, L, Rostami, H, Autere, A, Mehravar, S, Lombardo, A, Norwood, RA, Hasan, T, Peyghambarian, N, Lipsanen, H, Kieu, K, Ferrari, AC, Polini, M & Sun, Z 2017, 'Ultra-strong nonlinear optical processes and trigonal warping in MoS2 layers', Nature Communications, vol. 8, no. 1, 893. https://doi.org/10.1038/s41467-017-00749-4

APA

Säynätjoki, A., Karvonen, L., Rostami, H., Autere, A., Mehravar, S., Lombardo, A., ... Sun, Z. (2017). Ultra-strong nonlinear optical processes and trigonal warping in MoS2 layers. Nature Communications, 8(1), [893]. https://doi.org/10.1038/s41467-017-00749-4

Vancouver

Säynätjoki A, Karvonen L, Rostami H, Autere A, Mehravar S, Lombardo A et al. Ultra-strong nonlinear optical processes and trigonal warping in MoS2 layers. Nature Communications. 2017 Dec 1;8(1). 893. https://doi.org/10.1038/s41467-017-00749-4

Author

Säynätjoki, Antti ; Karvonen, Lasse ; Rostami, Habib ; Autere, Anton ; Mehravar, Soroush ; Lombardo, Antonio ; Norwood, Robert A. ; Hasan, Tawfique ; Peyghambarian, Nasser ; Lipsanen, Harri ; Kieu, Khanh ; Ferrari, Andrea C. ; Polini, Marco ; Sun, Zhipei. / Ultra-strong nonlinear optical processes and trigonal warping in MoS2 layers. In: Nature Communications. 2017 ; Vol. 8, No. 1.

Bibtex - Download

@article{27f127dd309749a9a19b4fa62b89f974,
title = "Ultra-strong nonlinear optical processes and trigonal warping in MoS2 layers",
abstract = "Nonlinear optical processes, such as harmonic generation, are of great interest for various applications, e.g., microscopy, therapy, and frequency conversion. However, high-order harmonic conversion is typically much less efficient than low-order, due to the weak intrinsic response of the higher-order nonlinear processes. Here we report ultra-strong optical nonlinearities in monolayer MoS2 (1L-MoS2): the third harmonic is 30 times stronger than the second, and the fourth is comparable to the second. The third harmonic generation efficiency for 1L-MoS2 is approximately three times higher than that for graphene, which was reported to have a large χ (3). We explain this by calculating the nonlinear response functions of 1L-MoS2 with a continuum-model Hamiltonian and quantum mechanical diagrammatic perturbation theory, highlighting the role of trigonal warping. A similar effect is expected in all other transition-metal dichalcogenides. Our results pave the way for efficient harmonic generation based on layered materials for applications such as microscopy and imaging.",
author = "Antti S{\"a}yn{\"a}tjoki and Lasse Karvonen and Habib Rostami and Anton Autere and Soroush Mehravar and Antonio Lombardo and Norwood, {Robert A.} and Tawfique Hasan and Nasser Peyghambarian and Harri Lipsanen and Khanh Kieu and Ferrari, {Andrea C.} and Marco Polini and Zhipei Sun",
year = "2017",
month = "12",
day = "1",
doi = "10.1038/s41467-017-00749-4",
language = "English",
volume = "8",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
number = "1",

}

RIS - Download

TY - JOUR

T1 - Ultra-strong nonlinear optical processes and trigonal warping in MoS2 layers

AU - Säynätjoki, Antti

AU - Karvonen, Lasse

AU - Rostami, Habib

AU - Autere, Anton

AU - Mehravar, Soroush

AU - Lombardo, Antonio

AU - Norwood, Robert A.

AU - Hasan, Tawfique

AU - Peyghambarian, Nasser

AU - Lipsanen, Harri

AU - Kieu, Khanh

AU - Ferrari, Andrea C.

AU - Polini, Marco

AU - Sun, Zhipei

PY - 2017/12/1

Y1 - 2017/12/1

N2 - Nonlinear optical processes, such as harmonic generation, are of great interest for various applications, e.g., microscopy, therapy, and frequency conversion. However, high-order harmonic conversion is typically much less efficient than low-order, due to the weak intrinsic response of the higher-order nonlinear processes. Here we report ultra-strong optical nonlinearities in monolayer MoS2 (1L-MoS2): the third harmonic is 30 times stronger than the second, and the fourth is comparable to the second. The third harmonic generation efficiency for 1L-MoS2 is approximately three times higher than that for graphene, which was reported to have a large χ (3). We explain this by calculating the nonlinear response functions of 1L-MoS2 with a continuum-model Hamiltonian and quantum mechanical diagrammatic perturbation theory, highlighting the role of trigonal warping. A similar effect is expected in all other transition-metal dichalcogenides. Our results pave the way for efficient harmonic generation based on layered materials for applications such as microscopy and imaging.

AB - Nonlinear optical processes, such as harmonic generation, are of great interest for various applications, e.g., microscopy, therapy, and frequency conversion. However, high-order harmonic conversion is typically much less efficient than low-order, due to the weak intrinsic response of the higher-order nonlinear processes. Here we report ultra-strong optical nonlinearities in monolayer MoS2 (1L-MoS2): the third harmonic is 30 times stronger than the second, and the fourth is comparable to the second. The third harmonic generation efficiency for 1L-MoS2 is approximately three times higher than that for graphene, which was reported to have a large χ (3). We explain this by calculating the nonlinear response functions of 1L-MoS2 with a continuum-model Hamiltonian and quantum mechanical diagrammatic perturbation theory, highlighting the role of trigonal warping. A similar effect is expected in all other transition-metal dichalcogenides. Our results pave the way for efficient harmonic generation based on layered materials for applications such as microscopy and imaging.

UR - http://www.scopus.com/inward/record.url?scp=85031282326&partnerID=8YFLogxK

U2 - 10.1038/s41467-017-00749-4

DO - 10.1038/s41467-017-00749-4

M3 - Article

VL - 8

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

IS - 1

M1 - 893

ER -

ID: 15868889