Preferred Label : upconversion;
IUPAC definition : The process by which two photons with frequencies ν 2 and ν 3 combine in a non-linear
medium to produce a higher energy photon with frequency ν 1 such that ν 1 ν 2
ν 3.;
Scope note : the efficiency of the conversion process depends on the parametric gain in the non-linear
material. this in turn depends on the power of the incident radiation, the photon
frequencies, their indices of refraction in the material, and the non-linear hyper-susceptibility
of the material.; also known as a parametric upconversion or sum frequency generation. upconversion
is the reverse process of downconversion.;
Origin ID : U06574;
See also
The process by which two photons with frequencies ν 2 and ν 3 combine in a non-linear
medium to produce a higher energy photon with frequency ν 1 such that ν 1 ν 2
ν 3.
