Tailored Ordered Structures with Functional Units of Distorted [NbO<sub>6</sub>] and Antiparallel [GeO<sub>4</sub>] for Enhanced Birefringence in Germanate Crystal

Zhao, Wenli; Jiao, Jinmiao; She, Yuheng; Liang, Fei; Ye, Ning; Hu, Zhanggui; Wu, Yicheng; Li, Conggang

doi:10.1002/adom.202201704

Cited by 8 publications

(11 citation statements)

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“…For LaBrMoO 4 , the experimentally estimated birefringence is 0.045, which is measured by a cross-polarizing microscope. The optical path difference was measured to be ∼23.6 μm at 1203 nm, according to the function of the Michal–Levy charts . As shown in Figure d, the initial interference color of LaBrMoO 4 was identified as third-order blue under orthogonally polarized light.…”

Section: Resultsmentioning

confidence: 98%

“…The optical path difference was measured to be ∼23.6 μm at 1203 nm, according to the function of the Michal−Levy charts. 104 As shown in Figure 2d, the initial interference color of LaBrMoO 4 was identified as third-order blue under orthogonally polarized light. The photo of the LaBrMoO 4 crystal after extinction is shown in Figure 2e.…”

Section: ■ Introductionmentioning

confidence: 86%

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Heteroanionic LaBrVIO₄ (VI = Mo, W): Excellence in Both Nonlinear Optical Properties and Photoluminescent Properties

Jiao,

Mireles,

Ensz

et al. 2023

Chem. Mater.

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Five heteroanionic oxybromides, LaBrMoO4, LaBrWO4, (La0.9Sm0.1)BrMoO4, (La0.9Sm0.1)BrWO4, and (La0.9Dy0.1)BrWO4, were grown by a high-temperature salt flux method. Millimeter-sized crystals were collected after salt flux was removed by DI water. The crystal structures were accurately determined by single-crystal X-ray diffraction. LaBrMoO4 is isostructural to LaBrWO4. The substitution of lanthanum for rare earth elements does not change the crystal structure. LaBrWO4 is the first acentric tungsten-containing compound of the REBrVIO4 (RE = Y, La–Lu; VI = Mo, W) system. The bonding picture of LaBrWO4 was understood by crystal orbital Hamilton population calculations (COHP) and electron localization function (ELF) analysis, which confirmed the uncommon 4 + 1 coordination of tungsten surrounded by oxygen atoms. Linear optical properties such as bandgaps, infrared spectrum (IR), and birefringence of the title compounds were recorded in this work. LaBrMoO4 exhibits a moderate second harmonic generation (SHG) response of 0.47× KH2PO4 (KDP) for incident 1064 nm radiation. LaBrWO4 and (La0.9Dy0.1)BrWO4 exhibit superior SHG responses of 1.66× KDP and 3.71× KDP for samples for incident 1064 nm radiation, respectively. All measured samples exhibited type-I phase matching behavior. Density function calculations (DFT) verified that the optical properties of LaBrMoO4 and LaBrWO4 are predominantly controlled by [VIO5]VI = Mo,W units. Via the rare earth elements Sm and Dy doping, LaBrMoO4 and LaBrWO4 emit visible lights of various wavelengths upon UV light excitation. The distortion of lambda-shaped one-dimensional (1D) [VIO5]VI = Mo,W strands plays an important role in enhancing nonlinear optical properties and photoluminescent properties within LaBrWO4 and (La0.9Dy0.1)BrWO4 compared with LaBrMoO4.

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Section: Resultsmentioning

confidence: 98%

Section: ■ Introductionmentioning

confidence: 86%

Heteroanionic LaBrVIO₄ (VI = Mo, W): Excellence in Both Nonlinear Optical Properties and Photoluminescent Properties

Jiao,

Mireles,

Ensz

et al. 2023

Chem. Mater.

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“…Similarly, the highly symmetric [PO 4 ] tetrahedra have almost the same identical optical response at the four P–O bonds, and the reverse arrangement can break this symmetry to the maximum extent, thus favoring a large optical anisotropy. , This commonality has been found in many recently reported tetrahedral oxide crystals with large birefringence, such as LnPO 4 (Ln = Sc, Y, Tb, etc. ), Te 3 O 3 (PO 4 ) 2 , Te 2 P 2 O 9 , β-Ba(PO 3 ) 2 , LiNaV 2 O 6 , YVO 4 , , and Cs 3 Nb 5 GeO 16 …”

Section: Resultsmentioning

confidence: 99%

“…Te 3 O 3 (PO 4 ) 2 , 17 Te 2 P 2 O 9 , 35 β-Ba(PO 3 ) 2 , 20 LiNa-V 2 O 6 , 36 YVO 4 ,31,37 and Cs 3 Nb 5 GeO 16 37. …”

mentioning

confidence: 99%

K₂Sr₄(PO₃)₁₀: A Polyphosphate with Deep-UV Cutoff Edge and Enlarged Birefringence

Dong,

Sun,

Feng

et al. 2023

Inorg. Chem.

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A new polyphosphate K 2 Sr 4 (PO 3 ) 10 is synthesized by a hightemperature solution method. This compound crystallizes in the triclinic space group of P1̅ , consisting of the 1D infinite [PO 3 ] ∞ chains and K and Sr ions between the chains. Compared with AM 2 (PO 3 ) 5 (A = K, Rb, Cs; M = Ba, Pb), K 2 Sr 4 (PO 3 ) 10 exhibits a more complex [PO 3 ] ∞ chain structure and more diverse metal cationic coordination environment. More importantly, K 2 Sr 4 (PO 3 ) 10 has both a deep-UV cutoff edge (<200 nm) and a significantly enlarged birefringence. First-principles calculations indicate that the birefringence of K 2 Sr 4 (PO 3 ) 10 is 0.017 at 1064 nm, about 2 times that of RbBa 2 (PO 3 ) 5 (0.008 at 1064 nm), which reaches a new height among the reported mixed alkali metal and alkaline earth metal phosphate. Theoretical calculations and structural analyses show that the enlarged birefringence of K 2 Sr 4 (PO 3 ) 10 mainly originates from the [PO 3 ] ∞ chains arranged in an inverted zigzag. This discovery introduces a new strategy for devising novel phosphate deep-UV optical crystals with a large birefringence.

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“…The optical birefringence of the target compound was experimentally examined through a polarizing microscope (Nikon Eclipse E200MV POL) with a visible light source. 30 A pristine crystal was chosen and its thickness was ascertained employing a Bruker SMART APEX III CCD diffractometer.…”

Section: Birefringence Characterizationmentioning

confidence: 99%

LiVTeO₅: a mid-infrared nonlinear optical vanadium tellurate crystal exhibiting enhanced second harmonic generation activities and notable birefringence

She,

Jiao,

Wang

et al. 2023

Inorg. Chem. Front.

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Tailored Ordered Structures with Functional Units of Distorted [NbO₆] and Antiparallel [GeO₄] for Enhanced Birefringence in Germanate Crystal

Abstract: Research data are not shared.

Cited by 8 publications

References 58 publications

Heteroanionic LaBrVIO₄ (VI = Mo, W): Excellence in Both Nonlinear Optical Properties and Photoluminescent Properties

Heteroanionic LaBrVIO₄ (VI = Mo, W): Excellence in Both Nonlinear Optical Properties and Photoluminescent Properties

K₂Sr₄(PO₃)₁₀: A Polyphosphate with Deep-UV Cutoff Edge and Enlarged Birefringence

LiVTeO₅: a mid-infrared nonlinear optical vanadium tellurate crystal exhibiting enhanced second harmonic generation activities and notable birefringence

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Tailored Ordered Structures with Functional Units of Distorted [NbO6] and Antiparallel [GeO4] for Enhanced Birefringence in Germanate Crystal

Abstract: Research data are not shared.

Cited by 8 publications

References 58 publications

Heteroanionic LaBrVIO4 (VI = Mo, W): Excellence in Both Nonlinear Optical Properties and Photoluminescent Properties

Heteroanionic LaBrVIO4 (VI = Mo, W): Excellence in Both Nonlinear Optical Properties and Photoluminescent Properties

K2Sr4(PO3)10: A Polyphosphate with Deep-UV Cutoff Edge and Enlarged Birefringence

LiVTeO5: a mid-infrared nonlinear optical vanadium tellurate crystal exhibiting enhanced second harmonic generation activities and notable birefringence

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Resources

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Tailored Ordered Structures with Functional Units of Distorted [NbO₆] and Antiparallel [GeO₄] for Enhanced Birefringence in Germanate Crystal

Heteroanionic LaBrVIO₄ (VI = Mo, W): Excellence in Both Nonlinear Optical Properties and Photoluminescent Properties

Heteroanionic LaBrVIO₄ (VI = Mo, W): Excellence in Both Nonlinear Optical Properties and Photoluminescent Properties

K₂Sr₄(PO₃)₁₀: A Polyphosphate with Deep-UV Cutoff Edge and Enlarged Birefringence

LiVTeO₅: a mid-infrared nonlinear optical vanadium tellurate crystal exhibiting enhanced second harmonic generation activities and notable birefringence