Up-conversion Luminescence in Dye-Doped Crystals of Potassium Hydrogen Phthalate

✍ Scribed by J.B. Benedict; P.M. Wallace; P.J. Reid; S.-H. Jang; B. Kahr

• Publisher: John Wiley and Sons
• Year: 2003
• Tongue: English
• Weight: 180 KB
• Volume: 15
• Category: Article
• ISSN: 0935-9648
• DOI: 10.1002/adma.200303715

✦ Synopsis

Optically nonlinear single crystals of potassium hydrogen phthalate were grown in the presence of a variety of laser dyes. Up‐conversion fluorescence (as shown in the Figure) in the visible part of the spectrum was observed as a result of two excitation mechanisms involving trapped, oriented luminophores: two‐photon absorption in general orientations, and absorption of the second harmonic of the fundamental beam at 800 nm, when aligned with the phase‐matching direction.