A microcrystal method for the measurement of birefringence

Cao, Liling; Peng, Guang; Liao, Wenbin; Yan, Tao; Long, Xifa; Ye, Ning

doi:10.1039/c9ce01934k

Cited by 89 publications

(73 citation statements)

References 6 publications

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“…The birefringences of SBOB, PBOB, and PBOC were characterized by using the polarizing microscope equipped (ZEISS Axio Scope A1) with Berek compensator. [ 29 ] The wavelength of the light source was 546 nm. Before the scanning, the small SBOB, PBOB, and PBOC crystals were cleaned and polished to be transparent lamellar crystals in order to improve the accuracy of the birefringence.…”

Section: Methodsmentioning

confidence: 99%

Sn₂B₅O₉Br as an Outstanding Bifunctional Material with Strong Second‐Harmonic Generation Effect and Large Birefringence

Guo

Cheng

Han

et al. 2020

Advanced Optical Materials

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The first tin (II) borate bromide, Sn2B5O9Br (SBOB), as an outstanding bifunctional material with excellent linear and nonlinear optical (NLO) performance is synthesized successfully. As far as it is known, it exhibits the largest birefringence among the reported borates (0.439 at 546 nm), even over famous birefringent materials YVO4 and TiO2. Meanwhile, it also owns a strong second harmonic generation (SHG) response of 2.4 times that of KH2PO4. Theoretical calculations display that its incredible optical properties mainly originate from the extremely intensive stereochemical activity lone pair (SCALP) of [SnO7Br2] polyhedra, which results in the enhancement of birefringence and SHG response, increasing to 2.6‐ and 4.8‐fold, respectively, from Sn2B5O9Cl (SBOC) to SBOB. These perceptions will guide and accelerate the exploration of excellent birefringence and NLO materials in tin (II)‐based compound.

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Section: Methodsmentioning

confidence: 99%

Sn₂B₅O₉Br as an Outstanding Bifunctional Material with Strong Second‐Harmonic Generation Effect and Large Birefringence

Guo

Cheng

Han

et al. 2020

Advanced Optical Materials

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“…The birefringences were measured under the polarizing microscope method, [44] using (001) crystal planes. The crystal thicknesses of Sn 2 PO 4 Br and Sn 2 PO 4 I are 27 and 13 μm, re‐spectively.…”

Section: Figurementioning

confidence: 99%

Sn₂PO₄I: An Excellent Birefringent Material with Giant Optical Anisotropy in Non π‐Conjugated Phosphate

et al. 2021

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Exploring non π‐conjugated phosphate birefringent crystal with a large birefringence has been a great challenge. Herein, based on the unique two‐dimensional layered structure in KBe2BO3F2 (KBBF), two new compounds, Sn2PO4I and Sn2BO3I, were designed and synthesized successfully, maintaining the layer structural feature and enhancing the optical anisotropy of crystals. In particular, the birefringence of Sn2PO4I is larger than or equal to 0.664 @546 nm, which is largest among the reported borates and phosphates, even surpassing commercial birefringent crystals YVO4 and TiO2. This work indicates that a breakthrough in birefringence of inorganic compound was achieved. Also, it provides a guiding idea for exploring large birefringence materials in the future.

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“…The birefringences were measured under the polarizing microscope method, [44] using (001) crystal planes. The crystal thicknesses of Sn 2 PO 4 Br and Sn 2 PO 4 I are 27 and 13 mm, respectively.…”

mentioning

confidence: 99%

Sn₂PO₄I: An Excellent Birefringent Material with Giant Optical Anisotropy in Non π‐Conjugated Phosphate

et al. 2021

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Exploring non p-conjugated phosphate birefringent crystal with a large birefringence has been a great challenge. Herein, based on the unique two-dimensional layered structure in KBe 2 BO 3 F 2 (KBBF), two new compounds, Sn 2 PO 4 I and Sn 2 BO 3 I, were designed and synthesized successfully, maintaining the layer structural feature and enhancing the optical anisotropy of crystals. In particular, the birefringence of Sn 2 PO 4 I is larger than or equal to 0.664 @546 nm, which is largest among the reported borates and phosphates, even surpassing commercial birefringent crystals YVO 4 and TiO 2 . This work indicates that a breakthrough in birefringence of inorganic compound was achieved. Also, it provides a guiding idea for exploring large birefringence materials in the future.

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A microcrystal method for the measurement of birefringence

Abstract: A scientifically valid test process to measure polycrystalline birefringence was proposed and confirmed as an effective method for screening anisotropic microcrystals.

Cited by 89 publications

References 6 publications

Sn₂B₅O₉Br as an Outstanding Bifunctional Material with Strong Second‐Harmonic Generation Effect and Large Birefringence

Sn₂B₅O₉Br as an Outstanding Bifunctional Material with Strong Second‐Harmonic Generation Effect and Large Birefringence

Sn₂PO₄I: An Excellent Birefringent Material with Giant Optical Anisotropy in Non π‐Conjugated Phosphate

Sn₂PO₄I: An Excellent Birefringent Material with Giant Optical Anisotropy in Non π‐Conjugated Phosphate

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A microcrystal method for the measurement of birefringence

Abstract: A scientifically valid test process to measure polycrystalline birefringence was proposed and confirmed as an effective method for screening anisotropic microcrystals.

Cited by 89 publications

References 6 publications

Sn2B5O9Br as an Outstanding Bifunctional Material with Strong Second‐Harmonic Generation Effect and Large Birefringence

Sn2B5O9Br as an Outstanding Bifunctional Material with Strong Second‐Harmonic Generation Effect and Large Birefringence

Sn2PO4I: An Excellent Birefringent Material with Giant Optical Anisotropy in Non π‐Conjugated Phosphate

Sn2PO4I: An Excellent Birefringent Material with Giant Optical Anisotropy in Non π‐Conjugated Phosphate

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Sn₂B₅O₉Br as an Outstanding Bifunctional Material with Strong Second‐Harmonic Generation Effect and Large Birefringence

Sn₂B₅O₉Br as an Outstanding Bifunctional Material with Strong Second‐Harmonic Generation Effect and Large Birefringence

Sn₂PO₄I: An Excellent Birefringent Material with Giant Optical Anisotropy in Non π‐Conjugated Phosphate

Sn₂PO₄I: An Excellent Birefringent Material with Giant Optical Anisotropy in Non π‐Conjugated Phosphate