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

Two-photon absorption has been widely studied, but 2PE has not been observed in semiconductors so far. First, we observed the basic effect of 2PE in a bulk GaAs semiconductor that was optically ...

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 ...

Due to the high Kerr nonlinearity of gallium phosphide, its high refractive index, and its negligible two-photon absorption, extremely efficient optical parametric amplification and frequency ...

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 ...