Third-Order and Fifth-Order Optical Nonlinearities by Two-Dimensional Excitonics

2019 ◽  
Author(s):  
Wei Ji
Keyword(s):  
Optical Nonlinearities ◽  
Two Dimensional ◽  
Third Order ◽  
Fifth Order

Fifth-order two-dimensional Raman spectra of CS2 are dominated by third-order cascades

1999 ◽  
Vol 111 (7) ◽  
pp. 3105-3114 ◽  
Author(s):  
David A. Blank ◽  
Laura J. Kaufman ◽  
Graham R. Fleming
Keyword(s):  
Raman Spectra ◽  
Two Dimensional ◽  
Third Order ◽  
Fifth Order

Suppression of shock-induced separation in fluids having large bulk viscosities

2014 ◽  
Vol 756 ◽  
Author(s):  
F. Bahmani ◽  
M. S. Cramer
Keyword(s):  
Boundary Layer ◽  
Bulk Viscosity ◽  
Shear Viscosity ◽  
Classical Problem ◽  
Two Dimensional ◽  
Perfect Gas ◽  
Third Order ◽  
Large Bulk ◽  
Boundary Layer Interaction ◽  
Fifth Order

AbstractWe examine the effect of large bulk viscosity on the classical problem of two-dimensional shock–boundary-layer interaction. The flow is taken to be steady and supersonic over a flat adiabatic plate. The boundary layer is taken to be laminar and the fluid is modelled as a perfect gas with a bulk viscosity that is large compared with its shear viscosity. The flow details are computed using a fifth-order weighted essentially non-oscillatory finite difference scheme and a third-order Runge–Kutta scheme for the spatial and temporal discretizations. The primary result of interest is the suppression of separation when the ratio of bulk to shear viscosity is sufficiently large.

Third-order optical nonlinearities of new two-dimensional pi -conjugated metal-coordinated complexes

1994 ◽  
Vol 27 (5) ◽  
pp. 911-913 ◽  
Author(s):  
Qihuang Gong ◽  
Yuan Wang ◽  
Shao-Chen Yang ◽  
Zongju Xia ◽  
Y H Zou ◽  
...  
Keyword(s):  
Optical Nonlinearities ◽  
Two Dimensional ◽  
Third Order ◽  
Pi Conjugated

Two-Dimensional Bismuthene Showing Radiation-Tolerant Third-Order Optical Nonlinearities

2021 ◽  
Author(s):  
Zheng-Tao Zhang ◽  
Qi-Qi Yang ◽  
Xiao-Juan Zhen ◽  
Zhan-Zu Feng ◽  
Xin-Ping Zhai ◽  
...  
Keyword(s):  
Optical Nonlinearities ◽  
Two Dimensional ◽  
Third Order ◽  
Radiation Tolerant

scholarly journals Two-Dimensional Materials with Giant Optical Nonlinearities near the Theoretical Upper Limit

ACS Nano ◽  
2021 ◽  
Vol 15 (4) ◽  
pp. 7155-7167
Author(s):  
Alireza Taghizadeh ◽  
Kristian S. Thygesen ◽  
Thomas G. Pedersen
Keyword(s):  
Optical Nonlinearities ◽  
Two Dimensional ◽  
Upper Limit ◽  
Two Dimensional Materials

scholarly journals Highly efficient THz four-wave mixing in doped silicon

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Nils Dessmann ◽  
Nguyen H. Le ◽  
Viktoria Eless ◽  
Steven Chick ◽  
Kamyar Saeedi ◽  
...  
Keyword(s):  
Four Wave Mixing ◽  
Wave Mixing ◽  
Optical Nonlinearities ◽  
Third Order ◽  
Picosecond Pulses ◽  
Light Pulses ◽  
A Value ◽  
Doped Silicon ◽  
Perturbative Regime ◽  
Silicon Doped

AbstractThird-order non-linearities are important because they allow control over light pulses in ubiquitous high-quality centro-symmetric materials like silicon and silica. Degenerate four-wave mixing provides a direct measure of the third-order non-linear sheet susceptibility χ(3)L (where L represents the material thickness) as well as technological possibilities such as optically gated detection and emission of photons. Using picosecond pulses from a free electron laser, we show that silicon doped with P or Bi has a value of χ(3)L in the THz domain that is higher than that reported for any other material in any wavelength band. The immediate implication of our results is the efficient generation of intense coherent THz light via upconversion (also a χ(3) process), and they open the door to exploitation of non-degenerate mixing and optical nonlinearities beyond the perturbative regime.

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