Ceramic laser materials

Investigation of up-conversion luminescence properties of RE/Yb co-doped Y2O3 transparent ceramic (RE=Er, Ho, Pr, and Tm)

“…Host materials with low phonon energy can reduce nonradiative loss due to the multiphonon relaxation and thus realize efficient up-conversion luminescence [3,4]. Although various materials, including crystal, glass and nanocrystalse have been investigated [5][6][7], relatively little research has been done on up-conversion luminescence properties of RE doped transparent ceramic, which not only has numerous advantages over single crystal and glass [8], but can also be used in devices (such as lasers and converters) more conveniently. Y 2 O 3 transparent ceramic has received great attention for its potential application in IR windows, domes and lasers [9,10].…”

Room-temperature sintered metal-organic framework nanocrystals: A new type of optical ceramics

“…If the inner light scatter is eliminated, ceramics can become transparent or optical ceramics [1,2]. With great potentials in optical windows, sensors and lasers, optical ceramics have received great attentions since 1950s [1].…”

“…If the inner light scatter is eliminated, ceramics can become transparent or optical ceramics [1,2]. With great potentials in optical windows, sensors and lasers, optical ceramics have received great attentions since 1950s [1]. As the gain medium of solid-state lasers, optical ceramics can combine the advantages of large size, high transparency, high mechanical and thermal stabilities, and ease for dispersing the luminous atoms and groups [3].…”

“…The cubic crystal symmetries (absence of the birefringence which causes extremely high scattering losses) are generally required for the crystallites of optical ceramics, meaning that only a few inorganic materials can be used. Besides, ceramics sintering usually operates above 1000 o C, which excludes organic and organic-inorganic hybrid materials [1].Porous coordination polymers (PCPs) or metal-organic frameworks (MOFs) are crystalline materials consisting of metal ions and organic ligands, which have captured widespread attentions for adsorption, catalysis, sensing, optics [6] and also laser gain mediums [7][8][9][10][11]. As can be seen in membranes and photonic crystals [12,13], MOF nanocrystals may merge to form seamless microscopic blocks under mild conditions [14][15][16].…”

“…The cubic crystal symmetries (absence of the birefringence which causes extremely high scattering losses) are generally required for the crystallites of optical ceramics, meaning that only a few inorganic materials can be used. Besides, ceramics sintering usually operates above 1000 o C, which excludes organic and organic-inorganic hybrid materials [1].…”