Metal borates are well-known candidates for frequency-doubling (FD) nonlinear optical (NLO) materials due to their tremendous structure flexibility and outstanding intrinsic properties, such as high chemical and thermal stability as well as wide transparent ranges. Yet, finding an optimal FD borate material that exhibits a large NLO response while also possessing a broad transparency window and phase matching is still a serious materials discovery challenge. In recent years, it was found that the incorporation of fluorine usually blue-shifts the absorption edge of a borate crystal due to the large electronegativity of fluorine, such as KBe2BO3F2; therefore, considerable attention has been attracted to finding an optimal composition in fluoride-containing borates. In general, fluorine-containing borates can be divided into two categories: borate fluorides and fluorooxoborates. The definition, synthesis, and structural chemistry of the two types of oxide fluorides are summarized. Our discussions will be mainly focused on the FD materials: structure features, crystal growth, FD properties, and the structure-property relationship.
|Title of host publication||Photonic and Electronic Properties of Fluoride Materials: Progress in Fluorine Science Series|
|Number of pages||44|
|ISBN (Print)||9780128017951, 9780128016398|
|Publication status||Published - Mar 15 2016|
- Borate fluorides
- Frequency-doubling materials
ASJC Scopus subject areas