"PHOTONICS: Material converts IR waves into visible light"
A team from the University of Buffalo has developed an organic material which is capable of absorbing three photons at infrared (IR) wavelengths and re-emitting the light in the visible spectrum. The group, led by Professor Paras Prasad of the university's Institute for Lasers, Photonics and Biophotonics, designed the material specifically with the aim of developing three-photon absorption at 1.3 micrometers, a frequency used for fibre optic communications.

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Story in EE Times: http://www.eet.com/at/news/OEG20020220S0014