Two-photon absorption spectra and optical nonlinearity in an MX-chain compound

2008 ◽  
Vol 128 (5-6) ◽  
pp. 1035-1037 ◽  
Author(s):  
Yoshiki Wada ◽  
Nobuyuki Matsushita
Keyword(s):  
Absorption Spectra ◽  
Optical Nonlinearity ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Chain Compound

OPTICAL NONLINEARITY VIA PHONONS AS AN INTERMEDIARY

2001 ◽  
Vol 10 (01) ◽  
pp. 65-77 ◽  
Author(s):  
OU FA ◽  
HE MINGGAO ◽  
WU FUGEN
Keyword(s):  
Second Harmonic ◽  
Optical Nonlinearity ◽  
Photon Absorption ◽  
Saturation Phenomenon ◽  
Sum Frequency ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Threshold Phenomenon ◽  
Anti Stokes ◽  
The Given

A new model to describe the origin of optical nonlinearity is presented. In this model, the interaction between light and medium is reduced to the coupling of photons with phonons, which occurs in the crystal lattice vibrating anharmonically. Then the optical nonlinearity originates from the nonlinear photon–phonon coupling or the interaction among phonons themselves. In this paper, more attention is drawn to the latter. By the given model, (1) degenerate and (2) nondegenerate parametric oscillations, (3) Stokes and (4) anti-Stokes Raman scattering, (5) sum-frequency and (6) second harmonic generation and (7) two-photon absorption are dealt with systematically and quantum-mechanically. The results of theoretical analysis show that the effects (1)–(4) are associated with threshold phenomenon, whereas the effects (5)–(7) with the saturation phenomenon.

Ab initiocalculations of two-photon absorption spectra in semiconductors

1995 ◽  
Vol 52 (7) ◽  
pp. 4986-4997 ◽  
Author(s):  
Misao Murayama ◽  
Takashi Nakayama
Keyword(s):  
Absorption Spectra ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon

Two-photon absorption spectra of a near-infrared 2-azaazulene polymethine dye: solvation and ground-state symmetry breaking

2013 ◽  
Vol 15 (20) ◽  
pp. 7666 ◽  
Author(s):  
Honghua Hu ◽  
Olga V. Przhonska ◽  
Francesca Terenziani ◽  
Anna Painelli ◽  
Dmitry Fishman ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Absorption Spectra ◽  
Ground State ◽  
Near Infrared ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Polymethine Dye

Simulation of two-photon absorption spectra of by direct calculation

2006 ◽  
Vol 118 (2) ◽  
pp. 205-219 ◽  
Author(s):  
G.W. Burdick ◽  
A. Burdick ◽  
V. Deev ◽  
Chang-Kui Duan ◽  
M.F. Reid
Keyword(s):  
Absorption Spectra ◽  
Direct Calculation ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon

scholarly journals Measurement of degenerate two-photon absorption spectra of a series of developed two-photon initiators using a dispersive white light continuum Z-scan

2017 ◽  
Vol 111 (7) ◽  
pp. 071901 ◽  
Author(s):  
Aliasghar Ajami ◽  
Wolfgang Husinsky ◽  
Maximilian Tromayer ◽  
Peter Gruber ◽  
Robert Liska ◽  
...  
Keyword(s):  
Absorption Spectra ◽  
White Light ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
White Light Continuum ◽  
Two Photon

scholarly journals Ultrafast sub–30-fs all-optical switching based on gallium phosphide

2019 ◽  
Vol 5 (6) ◽  
pp. eaaw3262 ◽  
Author(s):  
Gustavo Grinblat ◽  
Michael P. Nielsen ◽  
Paul Dichtl ◽  
Yi Li ◽  
Rupert F. Oulton ◽  
...  
Keyword(s):  
Gallium Phosphide ◽  
Optical Switching ◽  
Near Infrared ◽  
Optical Nonlinearity ◽  
Photon Absorption ◽  
Linear Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
All Optical ◽  
All Optical Switching

Gallium phosphide (GaP) is one of the few available materials with strong optical nonlinearity and negligible losses in the visible (λ > 450 nm) and near-infrared regime. In this work, we demonstrate that a GaP film can generate sub–30-fs (full width at half maximum) transmission modulation of up to ~70% in the 600- to 1000-nm wavelength range. Nonlinear simulations using parameters measured by theZ-scan approach indicate that the transmission modulation arises from the optical Kerr effect and two-photon absorption. Because of the absence of linear absorption, no slower free-carrier contribution is detected. These findings place GaP as a promising ultrafast material for all-optical switching at modulation speeds of up to 20 THz.

Two-photon absorption spectra and cross-section measurements in liquids

Nature ◽  
1979 ◽  
Vol 280 (5720) ◽  
pp. 304-306 ◽  
Author(s):  
A. C. TAM ◽  
C. K. N. PATEL
Keyword(s):  
Absorption Spectra ◽  
Cross Section ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon

Two-photon absorption spectra of direct and indirect materials: ZnO and AgCl

1986 ◽  
Vol 33 (10) ◽  
pp. 7270-7273 ◽  
Author(s):  
I. M. Catalano ◽  
A. Cingolani ◽  
M. Lepore
Keyword(s):  
Absorption Spectra ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon
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