Niobium Carbide MXenes with Broad-Band Nonlinear Optical Response and Ultrafast Carrier Dynamics

ACS Nano ◽  
2020 ◽  
Vol 14 (8) ◽  
pp. 10492-10502 ◽  
Author(s):  
Yiduo Wang ◽  
Yingwei Wang ◽  
Keqiang Chen ◽  
Kun Qi ◽  
Tianyu Xue ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Niobium Carbide ◽  
Broad Band ◽  
Optical Response ◽  
Carrier Dynamics ◽  
Nonlinear Optical Response ◽  
Ultrafast Carrier Dynamics ◽  
Ultrafast Carrier

scholarly journals Ultrafast Carrier Dynamics and Nonlinear Optical Response of InAsP Nanowires

2021 ◽  
Author(s):  
Junting Liu ◽  
He Yang ◽  
Vladislav Khayrudinov ◽  
Harri Lipsanen ◽  
Hongkun Nie ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Optical Response ◽  
Carrier Dynamics ◽  
Nonlinear Optical Response ◽  
Ultrafast Carrier Dynamics ◽  
Ultrafast Carrier

Nonlinear optical absorption and ultrafast carrier dynamics of copper antimony sulfide semiconductor nanocrystals

2018 ◽  
Vol 6 (33) ◽  
pp. 8977-8983 ◽  
Author(s):  
Feng Zhang ◽  
Keqiang Chen ◽  
Xiantao Jiang ◽  
Yunzheng Wang ◽  
Yanqi Ge ◽  
...  
Keyword(s):  
Solar Cell ◽  
Optical Absorption ◽  
Nonlinear Optical ◽  
Semiconductor Nanocrystals ◽  
Optical Response ◽  
Carrier Dynamics ◽  
Nonlinear Optical Response ◽  
Antimony Sulfide ◽  
Nonlinear Optical Absorption ◽  
Ultrafast Carrier

Ternary copper antimony sulfide nanocrystals (CAS NCs), a promising solar cell candidate, have been proposed and investigated from the perspective of nonlinear optical response and ultrafast photoinduced carrier dynamics.

scholarly journals Ultrafast Broadband Nonlinear Optical Response in Co-Doped Sb2Se3 Nanofilms at Near-Infrared

2021 ◽  
Vol 8 ◽  
Author(s):  
Di Sun ◽  
Yu Fang ◽  
Xiaoyan Yan ◽  
Wen Shan ◽  
Wenjun Sun ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Near Infrared ◽  
Optical Response ◽  
Free Carrier ◽  
Nonlinear Optical Response ◽  
Photon Absorption ◽  
Free Carrier Absorption ◽  
Ultrafast Carrier ◽  
Carrier Absorption ◽  
Co Doped

Transition metal-doped Sb2Se3 has become a heated topic caused by the strong nonlinear optical response and the ultrafast response time at high laser excitation. In this paper, the Co-doped Sb2Se3 with different doping amount (0.5, 1.0, and 1.5 W) nanofilms were prepared by magnetron sputtering technology, and the nonlinear behavior of Co-doped Sb2Se3 nanofilms at near infrared were systematically studied. The results of the femtosecond Z-Scan experiment indicate that the Co-doped Sb2Se3 nanofilms exhibit broadband nonlinear response properties owing to the free carrier absorption, the Kerr refraction, the two-photon absorption, and the free carrier refraction. The nonlinear absorption coefficients of Co-doped Sb2Se3 nanofilms are from 3.0 × 10−9 to 2.03 × 10−8 m/ W under excitation at 800, 980, and 1,030 nm, and the nonlinear refractive index of the Co-doped Sb2Se3 nanofilms is from 4.0 × 10−16 to -3.89 × 10−15 m2/ W at 800, 980, and 1,030 nm. More importantly, Co-doped Sb2Se3 (1.5 W) nanofilm exhibits ultrafast carrier absorption (<1 ps) and a stronger transient absorption intensity of ΔOD > 6.3. The Co-doping content can controllably tune the crystalline degree, the ultrafast carrier absorption, the intensity of the reverse saturation absorption, the broadband nonlinear optical response, and the carrier relaxation time of Co-doped Sb2Se3 nanofilms. These results are sufficient to support their applications in broadband nonlinear photonic devices.

Tunable nonlinear optical responses and carrier dynamics of two-dimensional antimonene nanosheets

2020 ◽  
Vol 5 (10) ◽  
pp. 1420-1429 ◽  
Author(s):  
Lei Zhang ◽  
Shah Fahad ◽  
Hao-Ran Wu ◽  
Tao-Tao Dong ◽  
Zi-Zhen Chen ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Strong Influence ◽  
Optical Response ◽  
Carrier Dynamics ◽  
Nonlinear Optical Response ◽  
Two Dimensional ◽  
Size Dependent ◽  
Optical Responses ◽  
Size Controlled

We developed a size-controlled intercalation method to prepare Sb nanosheets. A distinct size-dependent nonlinear optical response, unveiling the strong influence of the scale of the Sb nanosheets on the carrier dynamics was observed.

Ultrafast Carrier Dynamics in Hematite Films: The Role of Photoexcited Electrons in the Transient Optical Response

2014 ◽  
Vol 118 (41) ◽  
pp. 23621-23626 ◽  
Author(s):  
Shayne Sorenson ◽  
Eric Driscoll ◽  
Shima Haghighat ◽  
Jahan M. Dawlaty
Keyword(s):  
Optical Response ◽  
Carrier Dynamics ◽  
Ultrafast Carrier Dynamics ◽  
Ultrafast Carrier

scholarly journals The pump fluence and wavelength-dependent ultrafast carrier dynamics and optical nonlinear absorption in black phosphorus nanosheets

Nanophotonics ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 2033-2043 ◽  
Author(s):  
Wenzhi Wu ◽  
Yongjian Zhou ◽  
Jun Wang ◽  
Yabin Shao ◽  
Degui Kong ◽  
...  
Keyword(s):  
Nonlinear Absorption ◽  
Broad Band ◽  
Visible Region ◽  
Carrier Dynamics ◽  
Black Phosphorus ◽  
Transient Absorption Spectroscopy ◽  
Photon Absorption ◽  
Open Aperture ◽  
Ultrafast Carrier Dynamics ◽  
Ultrafast Carrier

AbstractPump fluence and probe wavelength-dependent ultrafast carrier dynamics and optical nonlinear absorption in black phosphorus nanosheets are investigated by transient absorption spectroscopy and open-aperture Z scan techniques. The decay time becomes longer with larger wavelengths under pump wavelengths of both 400 nm and 800 nm excitation. For 800 nm excitation, pump fluence-dependent lifetime shows complex behaviors, which might be due to the competition between the linear absorption and two photon absorption. For 400 nm excitation, an additional decaying channel is observed at a larger pump fluence, which is explained by an effective subband structure. In open-aperture Z scan measurements, strong saturation absorption is observed in the visible region over a broad band from 450 nm to 700 nm. The saturation intensity shows an increasing trend with increase in the wavelength. Also, the saturation intensities under different pulse widths and solvents are discussed in detail. Our results show that black phosphorus nanosheets have great potential in future ultrathin optoelectronic devices.

Sign in / Sign up

Export Citation Format

Share Document