Linear and nonlinear optical properties of the KBe2BO3F2 (KBBF) crystal

Growth of a new nonlinear optical crystal—BaAlBO3F2

“…BABF structure is similar to that of KBBF which can be grown only with thickness of 0.5 mm [10]. It is easier to understand from KBBF structure.…”

δ-BIBO:Nd crystals as promising laser operated piezoelectric materials

“…Among many excellent nonlinear optical materials very promising seem to be borates possessing the fundamental absorption edge up to 160-210 nm: CsLiB 6 O 10 [1], b-BaB 2 O 4 [2], LiB 3 O 5 [3], KBe 2 BO 3 F 2 [4] and many other. This is essential advantageous with respect to such crystals as tantalates, niobates, iodates etc.…”

Comparative Interrelationship of the Structural, Nonlinear-Optical and Other Acentric Properties for Oxide, Borate and Carbonate Crystals

“…So, the new crystals of the fluoride-carbonates have their high level χ (2) =10-20 pm/V [20][21][22]129], while the crystals of fluoride-borate BaAlBO3F2 have the value of χ (2) only 1.1-1.5 pm/V [122]. This circumstance is stipulated by the increase of the "аcentricity" degree in the coordination polyhedrons due to the existence of hetero-valence ligands, including О 2− and F − anions [128].…”

“…These crystals expanded the possible boundary of transparence in the UV spectral region in comparison with borate crystals, and the essential part of these contributions was carried out by the Chen's group and other scientists [14,15,101,[120][121][122][123][124][125][126][127][128][129][130]. The fluoride borate crystals KBe2BO3F2 (KBBF), RbBe2BO3F2 (RBBF), CsBe2BO3F2 (CBBF) and TlBe2BO3F2 (TBBF) have the trigonal D3-point symmetry (R32) [120][121][122]. The fluoride borate crystal, Sr3[(BexB1-x)3O10][Be(O1-xFx)3], x = 0.33, has its polar trigonal C3v point symmetry, while some other crystals (BaAlBO3F2, C3h, Ba7(BO3)4−xF2+3x, C6, Sr2Be2B2O7, D3h, NaBeBO3, D3h)-the hexagonal structure [124][125][126][127][128].…”

“…Chen and others [14,15], and the crystal growth technology was developed in many studies [117][118][119]. Earlier, and for the last years, some deep UV borate and fluoride-borate crystals have been grown [120][121][122][123][124][125][126]. These crystals expanded the possible boundary of transparence in the UV spectral region in comparison with borate crystals, and the essential part of these contributions was carried out by the Chen's group and other scientists [14,15,101,[120][121][122][123][124][125][126][127][128][129][130] 3 ], x = 0.33, has its polar trigonal C 3v point symmetry, while some other crystals (BaAlBO 3 F 2 , C 3h , Ba 7 (BO 3 ) 4−x F 2+3x , C 6 , Sr 2 Be 2 B 2 O 7 , D 3h, NaBeBO 3 , D 3h )-the hexagonal structure [124][125][126][127][128].…”