“…(17), (20), and (21) except for the terms Q i and S i . The first additional term, Q i , comes from the self-consistent linear field correction to the guest molecules from the surrounding host material.…”
Section: Approximating Cascading In Poled Guest-host Systemsmentioning
confidence: 99%
“…The shape of the primitive cell is also known to change the local field in strained crystal lattices. [19][20][21][22][23] There are many models that assume a potential from permanent dipoles on an infinite Bravais lattice for approximating macroscopic systems, [24][25][26] but we wish to approach the boundary problem via field-matter interactions, beginning with the perfect dipole approximation at each point on the lattice. This method requires knowledge about the entire system and all boundary locations, and, thus is more computationally expensive when calculating large systems.…”
Section: Applications To Single-component Systemsmentioning
A model for off-resonant microscopic cascading of (hyper)polarizabilities is developed using a selfconsistent field approach to study mesoscopic systems of nonlinear polarizable atoms and molecules. We find enhancements in the higher-order susceptibilities resulting from geometrical and boundary orientation effects. We include an example of the dependence on excitation beam cross sectional structure and a simplified derivation of the microscopic cascading of the nonlinear optical response in guest-host systems.
“…(17), (20), and (21) except for the terms Q i and S i . The first additional term, Q i , comes from the self-consistent linear field correction to the guest molecules from the surrounding host material.…”
Section: Approximating Cascading In Poled Guest-host Systemsmentioning
confidence: 99%
“…The shape of the primitive cell is also known to change the local field in strained crystal lattices. [19][20][21][22][23] There are many models that assume a potential from permanent dipoles on an infinite Bravais lattice for approximating macroscopic systems, [24][25][26] but we wish to approach the boundary problem via field-matter interactions, beginning with the perfect dipole approximation at each point on the lattice. This method requires knowledge about the entire system and all boundary locations, and, thus is more computationally expensive when calculating large systems.…”
Section: Applications To Single-component Systemsmentioning
A model for off-resonant microscopic cascading of (hyper)polarizabilities is developed using a selfconsistent field approach to study mesoscopic systems of nonlinear polarizable atoms and molecules. We find enhancements in the higher-order susceptibilities resulting from geometrical and boundary orientation effects. We include an example of the dependence on excitation beam cross sectional structure and a simplified derivation of the microscopic cascading of the nonlinear optical response in guest-host systems.
“…Mueller [22,13] has developed a ph ysical theory to expl ain the c hanges in th e refr ac ti ve index elli psoid th a t take place when a solid is stressed. In thi s theory, calc ula ti ons are made of the c h an ges in th e de ns it y, co ulomb fi eld , the lore ntz-lorenz fi eld , a nd the intrins ic pola ri zability of th e scatte rin g ce nters.…”
Section: Chan Ge It S Hould Be Note D That the Relative Valu Esmentioning
The e ight piezo-optic a~d e ig ht ela st o-o pti c co ns tants of synth e ti c , sin gle crys tal ruby have bee n de te rmin ed uSin g th e ca dmIu m red ra dI atIOn of 643.8 na no me te rs (nm ). All the co ns tant s are found to be n e~at lv e In value, or t? have very s ma ll pos itive valu es. Th e da ta indi cate that c hanges in th e po la nzablilt y of th e oxygen Ion a nd c ha nges in th e loca l field a re prim a ril y res pon s ibl e for th e obse rved c hanges In refra? l!v e Ind~x. H ydros tati c press ure has been used for th e first tim e as part of a co mpl e te photoe la s tl c lnve s tl gallOn , a nd a ne w, sc re w-clamp device for e as il y alla inin g hi gh, uni ax ia l stress IS d esc nb ed.
“…Effect of wavelength on the sign of (Pu-Plz) Following Pockels, Mueller (1935) has divided all cubic crystals into four groups according to the sign of (Pn-P12) and Paa. He predicted the classes to which some of the crystals would belong if their photo-elastic nature was explored.…”
Section: Effect Of Elastic Deformation On Oscillator Strengths and DImentioning
The theory outlined in Part I is shown %o yield the correct values of the strain-optical coefficients Pn and P~e, the sign reversal of (Pn-Pn), and ionic polarizabilities. In the light of the theory, the following effects have also been examined. (i) The effect of elastic deformation on oscillator strengths and the frequencies of optical electrons, (ii) effect of temperature on ionic polarizability, and (iii) the temperature and wavelength dependence of the strain-polarizability constant under hydrostatic pressure.
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