Portable multiphoton microscopy system uses femtosecond laser pulses to create pathology-quality diagnostic images ...

The technology is based on two-photon absorption; when the beam of an ultrafast (for example, femtosecond) laser is tightly focused on a volume of photosensitive material, the polymerization ...

In recent years, development of the two-photon absorption process for optical data storage has made significant progress. Call/Recall researchers have succeeded in storing the equivalent of 200 ...

The average laser power used ranges from 3mW for small knots to 13 mW for larger ones, as measured just before the objective (note that the power in the sample is further reduced by about a factor of ...

Photon upconversion involves a series of non-linear optical processes where the sequential absorption of two or more photons leads to the emission of a single photon with energy greater than the sum ...