Pump polarization dependent ultrafast carrier dynamics and two-photon absorption in an a-plane ZnO epitaxial film

2015 ◽  
Vol 107 (14) ◽  
pp. 142107 ◽  
Author(s):  
Ja-Hon Lin ◽  
Hsing-Jung Su ◽  
Chia-Hui Lu ◽  
Chun-peng Chang ◽  
Wei-Rein Liu ◽  
...  
Keyword(s):  
Epitaxial Film ◽  
Carrier Dynamics ◽  
Photon Absorption ◽  
Ultrafast Carrier Dynamics ◽  
Two Photon Absorption ◽  
Two Photon ◽  
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.

Investigation of free charge carrier dynamics in single-crystalline CVD diamond by two-photon absorption

2014 ◽  
Vol 44 (11) ◽  
pp. 1055-1060 ◽  
Author(s):  
E V Ivakin ◽  
I G Kisialiou ◽  
V G Ralchenko ◽  
A P Bolshakov ◽  
E E Ashkinazi ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Free Charge Carrier ◽  
Cvd Diamond ◽  
Carrier Dynamics ◽  
Photon Absorption ◽  
Free Charge ◽  
Single Crystalline ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Charge Carrier Dynamics

Effects of two-photon absorption on carrier dynamics in quantum-dot optical amplifiers

2006 ◽  
Vol 82 (4) ◽  
pp. 615-620 ◽  
Author(s):  
H. Ju ◽  
A.V. Uskov ◽  
R. Nötzel ◽  
Z. Li ◽  
J. Molina Vázquez ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Optical Amplifiers ◽  
Carrier Dynamics ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon

Ultrafast bulk carrier dynamics in various GaN crystals at near-infrared wavelengths under one- and two-photon absorption

2019 ◽  
Vol 114 (11) ◽  
pp. 112108 ◽  
Author(s):  
Yu Fang ◽  
Junyi Yang ◽  
Zhengguo Xiao ◽  
Xingzhi Wu ◽  
Jidong Jia ◽  
...  
Keyword(s):  
Near Infrared ◽  
Carrier Dynamics ◽  
Photon Absorption ◽  
Bulk Carrier ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Infrared Wavelengths
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