Characterization of ultrafast optical nonlinearities of ZnS in the presence of group velocity dispersion

Guanghong Ao; Zhongguo Li; Zhongquan Nie; Degui Kong; Guang Shi; Yuxiao Wang; Xueru Zhang; Yinglin Song

doi:10.1007/s00340-015-6028-x

Characterization of ultrafast optical nonlinearities of ZnS in the presence of group velocity dispersion

Guanghong Ao
, Zhongguo Li
, Zhongquan Nie
, Degui Kong
, Guang Shi
, Yuxiao Wang
, Xueru Zhang^*
, Yinglin Song

^*Corresponding author for this work

School of Physics

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

The ultrafast nonlinear optical response of a 3-mm-thick polycrystalline zinc sulfide (ZnS) is investigated using the combination of Z-scan technique and time-resolved pump-probe technology with a phase object. The temporal broadening of femtosecond pulse induced by group velocity dispersion (GVD) is clearly observed in the ZnS crystal. A unified expression of pulse-propagating equations taking account of GVD is proposed, which fits the experiment results well and properly explains the observed pulse broadening. The dispersion coefficient k₂, third-order nonlinear refractive index n_2z and three-photon absorption coefficient α₃ of ZnS are determined quantitatively, which are 5.5 × 10⁻²⁴s²/m, (0.76 ± 0.8) × 10⁻⁵cm²/GW and (1.8 ± 0.3) × 10⁻³cm³/GW², respectively. The obtained results imply that GVD has a significant impact on the ultrafast nonlinearities of ZnS.

Original language	English
Pages (from-to)	527-531
Number of pages	5
Journal	Applied Physics B: Lasers and Optics
Volume	118
Issue number	4
DOIs	https://doi.org/10.1007/s00340-015-6028-x
State	Published - 25 Feb 2015

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@article{446daa02ea9c4a899283d9fa606f2c28,

title = "Characterization of ultrafast optical nonlinearities of ZnS in the presence of group velocity dispersion",

abstract = "The ultrafast nonlinear optical response of a 3-mm-thick polycrystalline zinc sulfide (ZnS) is investigated using the combination of Z-scan technique and time-resolved pump-probe technology with a phase object. The temporal broadening of femtosecond pulse induced by group velocity dispersion (GVD) is clearly observed in the ZnS crystal. A unified expression of pulse-propagating equations taking account of GVD is proposed, which fits the experiment results well and properly explains the observed pulse broadening. The dispersion coefficient k2, third-order nonlinear refractive index n2z and three-photon absorption coefficient α3 of ZnS are determined quantitatively, which are 5.5 × 10−24s2/m, (0.76 ± 0.8) × 10−5cm2/GW and (1.8 ± 0.3) × 10−3cm3/GW2, respectively. The obtained results imply that GVD has a significant impact on the ultrafast nonlinearities of ZnS.",

author = "Guanghong Ao and Zhongguo Li and Zhongquan Nie and Degui Kong and Guang Shi and Yuxiao Wang and Xueru Zhang and Yinglin Song",

note = "Publisher Copyright: {\textcopyright} 2015, Springer-Verlag Berlin Heidelberg.",

year = "2015",

month = feb,

day = "25",

doi = "10.1007/s00340-015-6028-x",

language = "英语",

volume = "118",

pages = "527--531",

journal = "Applied Physics B: Lasers and Optics",

issn = "0946-2171",

publisher = "Springer Verlag",

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}

TY - JOUR

T1 - Characterization of ultrafast optical nonlinearities of ZnS in the presence of group velocity dispersion

AU - Ao, Guanghong

AU - Li, Zhongguo

AU - Nie, Zhongquan

AU - Kong, Degui

AU - Shi, Guang

AU - Wang, Yuxiao

AU - Zhang, Xueru

AU - Song, Yinglin

PY - 2015/2/25

Y1 - 2015/2/25

N2 - The ultrafast nonlinear optical response of a 3-mm-thick polycrystalline zinc sulfide (ZnS) is investigated using the combination of Z-scan technique and time-resolved pump-probe technology with a phase object. The temporal broadening of femtosecond pulse induced by group velocity dispersion (GVD) is clearly observed in the ZnS crystal. A unified expression of pulse-propagating equations taking account of GVD is proposed, which fits the experiment results well and properly explains the observed pulse broadening. The dispersion coefficient k2, third-order nonlinear refractive index n2z and three-photon absorption coefficient α3 of ZnS are determined quantitatively, which are 5.5 × 10−24s2/m, (0.76 ± 0.8) × 10−5cm2/GW and (1.8 ± 0.3) × 10−3cm3/GW2, respectively. The obtained results imply that GVD has a significant impact on the ultrafast nonlinearities of ZnS.

AB - The ultrafast nonlinear optical response of a 3-mm-thick polycrystalline zinc sulfide (ZnS) is investigated using the combination of Z-scan technique and time-resolved pump-probe technology with a phase object. The temporal broadening of femtosecond pulse induced by group velocity dispersion (GVD) is clearly observed in the ZnS crystal. A unified expression of pulse-propagating equations taking account of GVD is proposed, which fits the experiment results well and properly explains the observed pulse broadening. The dispersion coefficient k2, third-order nonlinear refractive index n2z and three-photon absorption coefficient α3 of ZnS are determined quantitatively, which are 5.5 × 10−24s2/m, (0.76 ± 0.8) × 10−5cm2/GW and (1.8 ± 0.3) × 10−3cm3/GW2, respectively. The obtained results imply that GVD has a significant impact on the ultrafast nonlinearities of ZnS.

UR - https://www.scopus.com/pages/publications/84938058074

U2 - 10.1007/s00340-015-6028-x

DO - 10.1007/s00340-015-6028-x

M3 - 文章

AN - SCOPUS:84938058074

SN - 0946-2171

VL - 118

SP - 527

EP - 531

JO - Applied Physics B: Lasers and Optics

JF - Applied Physics B: Lasers and Optics

IS - 4

ER -

Characterization of ultrafast optical nonlinearities of ZnS in the presence of group velocity dispersion

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