scholarly journals Width Dependent Two-Photon Absorption in Monolayer Black Phosphorus Nanoribbons

2019 ◽  
Vol 9 (10) ◽  
pp. 2014 ◽  
Author(s):  
Yu Liu ◽  
Xiaobo Feng ◽  
Yonggang Qin ◽  
Qianjin Wang
Keyword(s):  
Visible Region ◽  
Infrared Region ◽  
Black Phosphorus ◽  
Photon Absorption ◽  
Band Model ◽  
Relaxation Energy ◽  
Two Photon Absorption ◽  
Two Photon ◽  
The Matrix ◽  
Band Transition

Black phosphorus nanoribbons (BPNs) might offer alternatives to narrow-gap compound semiconductors for tunable optoelectronics in infrared region. In this work we present a quantum perturbation theory on two-photon absorption (TPA) in monolayer armchair-edged black phosphorus nanoribbons (acBPNs) employing the reduced two-band model within the long-wavelength BP Hamiltonian. The matrix elements for one-photon transition have been derived and the TPA spectrum associate with intra conduction band transition and inter band transition have been drawn. The calculations predict that the TPA coefficient in acBPNs is in the magnitude of 10−6 m/W in visible region, which is 4 orders higher than the conventional semiconductor quantum dots. And in infrared region, there is a giant TPA coefficient, which is mainly contributed from intra band transitions and can reach up to10−1 m/W. The TPA peaks can be tuned both by the width of BPNs and the electron relaxation energy.

Optical Kerr effect and two-photon absorption in monolayer black phosphorus

2018 ◽  
Vol 20 (5) ◽  
pp. 055503 ◽  
Author(s):  
Vl A Margulis ◽  
E E Muryumin ◽  
E A Gaiduk
Keyword(s):  
Kerr Effect ◽  
Black Phosphorus ◽  
Photon Absorption ◽  
Optical Kerr Effect ◽  
Two Photon Absorption ◽  
Two Photon

Two-Photon Absorption of Biexcitons for a Truncated Potential

1995 ◽  
Vol 413 ◽  
Author(s):  
F. B. Gallagher ◽  
F. C. Spano
Keyword(s):  
Nearest Neighbor ◽  
Tight Binding ◽  
Photon Absorption ◽  
Basis Sets ◽  
Band Model ◽  
Two Photon Absorption ◽  
Coulombic Interactions ◽  
Two Photon ◽  
A Charge ◽  
Two Parameters

ABSTRACTA tight binding, one dimensional, two-band model is used to investigate the formation and nonlinear optical properties of biexcitons in conjugated polymers. The full single and double electron-hole pair basis sets are explicitly considered for a Hamiltonian which includes an electron and hole transfer parameter (t) along with a truncated potential with only on-site (V0 ) and nearest neighbor (V1) Coulombic interactions. The biexciton phase space is determined to be a function of only two parameters α and βwhere α ≅V1/V0 and β ≅t/V0. Due to the truncated potential only a single biexciton eigenstate is formed in the region limited by 0.64 < α≤ 1 and 0 ≤ β< 0.33. The two-photon absorption spectra in the range 0 < hω < δ, where δ is the one photon gap, are found to contain at most two types of peaks: one arising from a biexciton and another due to a charge-transfer, single-exciton. The polymer limit is obtained and used to investigate polymers with large alternation such as polysilane.

Thiophene-based terpyridine and its zinc halide complexes: third-order nonlinear optical properties in the near-infrared region

2015 ◽  
Vol 44 (3) ◽  
pp. 1473-1482 ◽  
Author(s):  
Jingyun Tan ◽  
Rui Li ◽  
Dandan Li ◽  
Qiong Zhang ◽  
Shengli Li ◽  
...  
Keyword(s):  
Near Infrared ◽  
Free Ligand ◽  
Infrared Region ◽  
Photon Absorption ◽  
Absorption Property ◽  
Third Order ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Halide Complexes ◽  
Near Infrared Region

The crystal structures of a thiophene-based terpyridine ligand and its four zinc halide complexes had been discussed. The open-aperture Z-scan results showed that LZnBr2 exhibits the best two-photon absorption property, which is greatly superior to that of the free ligand L.

TWO-PHOTON ABSORPTION AND FLUORESCENCE OF NEW DERIVATIVES OF CYCLOHEXANONE AND PIPERIDONE

2005 ◽  
Vol 14 (01) ◽  
pp. 21-40 ◽  
Author(s):  
SERGEY S. SARKISOV ◽  
BURL H. PETERSON ◽  
MICHAEL J. CURLEY ◽  
VLADIMIR N. NESTEROV ◽  
TATIANA TIMOFEEVA ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Region ◽  
Fluorescent Imaging ◽  
Photon Absorption ◽  
Efficient Treatment ◽  
Nonlinear Materials ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Single Compound ◽  
Derivatives Of

We report on two-photon absorption and two-photon excited fluorescence of a selected group of new derivatives of cyclohexanone and piperidone with regard to their molecular structure. The molecular cross-section of the two-photon absorption of these compounds, as high as 3000 × 10-50 cm4 s/photon at nanosecond pumping, makes then promising nonlinear materials for optical limiting in the near-infrared region. They also exhibit an intense two-photon exciting fluorescence. Similar compounds have previously demonstrated strong anticancer effect. Both features combined in a single compound thus open the way for more efficient treatment of cancer, when biochemical destruction of malignant cells is accompanied by their two-photon fluorescent imaging.

Efficient two-photon absorption of bulk GaN in the near-infrared region

2003 ◽  
Vol 0 (7) ◽  
pp. 2627-2630
Author(s):  
Y. Toda ◽  
T. Matsubara ◽  
R. Morita ◽  
K. Hoshino ◽  
T. Someya ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Region ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Bulk Gan ◽  
Near Infrared Region

scholarly journals Possible two-photon absorption in the near-infrared region observed by cavity ring-down spectroscopy

2020 ◽  
Vol 28 (26) ◽  
pp. 39128
Author(s):  
Lei Yang ◽  
Hong Lin ◽  
Mark Plimmer ◽  
Xiao-Juan Feng ◽  
Hong-Wei Chu ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Region ◽  
Photon Absorption ◽  
Cavity Ring Down Spectroscopy ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Near Infrared Region ◽  
Cavity Ring Down
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