Influence of YAB:Cr³⁺ nanocrystallite sizes on two‐photon absorption of YAB:Cr³⁺

Abstract

An influence of nanocrystalline sizes of YAB : Cr particles incorporated within olygoetheracrylate polymer matrix on the two-photon absorption was investigated. Maximal values of the two-photon absorption diagonal tensor component was observed at low temperatures (about 4.2 K) and corresponded to concentration of the YAB : Cr NC about the 3% by weight and about 22 nm in sizes. The Cr 3+ ions inside investigated NC play the crucial role in the observed nonlinear optical phenomena. The observed temperature dependence is explained within a model of anharmonic electron-phonon contribution in the nanocrystallites.

Optical second harmonic generation in Yttrium Aluminum Borate single crystals (theoretical simulation and experiment)

“…The nonlinear optical properties of this material in connection with lasing properties led to the construction of numerous systems generating red, green and blue light by self-frequency doubling effect [5]. YAB can be obtained as nano crystallite powders by simple technological approaches [6,7]. They also possess relatively large two-photon absorption [6], which makes them promising third order optical materials.…”

“…YAB can be obtained as nano crystallite powders by simple technological approaches [6,7]. They also possess relatively large two-photon absorption [6], which makes them promising third order optical materials. At the same time they are good matrices for different rare earth ions [8][9][10][11].…”

DNA-hexadecyltrimethyl ammonium chloride complex with enhanced thermostability as promising electronic and optoelectronic material

“…The obtained enhancement of the thermo stability may do these materials comparable with other organic chromohores [36,37] as well as inorganic nanocomposites [38].…”

Optical absorption and EPR spectral studies of vauquelinite

“…The charge on chromium is +6 and belongs to d 0 configuration. The Cr ions incorporated into the oxide crystals may demonstrate strong electron phonon anharmonicity [6]. Therefore it acts as diamagnetic.…”