Scaling
The
nonlinear-optical response scales with size of the system and the
number of electrons. The intrinsic hyperpolarizability removes the
effects of scaling so that molecules can be better compared with each
other. Read more or see a short tutorial.
Breaching the gap
Until
the mid-2000s, the best molecules were found to fall about a factor of
30 short of the fundamental limit. More recently, several groups have
reported on molecules that come closer to the limit. Read
more
Reversing Time's Arrow
Researchers use polymers to reverse the
arrow of time. More
Tutorials
Learn about various topics in light-matter
interactions from the basics of the polarizability to quantum
calculations of nonlinear susceptibilities. Read
more
|
Inhomogeneous broadening
Nonlinear
susceptibility calculations often do not account for inhomogeneous
broadening. A general theory of broadening that includes a stretched
gaussian model has been reported. More
How good is your molecule?
Keep track of the molecules with the
largest nonlinear-optical response and submit your data in the form
described on the Tabulations Page.
Resources
Download useful source code; Origin,
MatCad, and Matlab worksheets; and share code. Read
more
|
Photodynamic therapy
Two-photon absorption may offer a better
method for differentiating between good and bad cells. Studies in mice
shows this approach to me a promising one for zapping tumors. Read
more
High resolution micro-fabrication
Resins that photo-polymerize under two
photon absorption can lead to higher resolution features due to the
fact that the absorption probability scales as the square of the
intensity profile. Read more
News
Get the latest news on new materials
development, new technological advances, and updates on new physics of
nonlinear optics. More
|