ADVANCED MATERIALS
·
2025
·Vol. 37
·期 10
·2419643
·
IF 26.8
Xiaofei Dong,Feifei Guo,Lijuan Chen,Wenxiang Mu,Lishan Liu,Shanpeng Wang,Xutang Tao,Zeliang Gao
Waveplates are important optical components to control the polarization of light. Currently, they are often fabricated from uniaxial crystals, and there is no report about waveplates based on the biaxial crystals. In this work, a novel biaxial crystal MgTe 2 O 5 with a structure constructed by 0D Te 2 O 5 groups is designed and grown as waveplate materials for the first time. The exciting result is that the birefringence in the (001)-plane is smaller than 0.0028 in the range from 0.4 to 5 µm, which is significantly smaller than that of the current waveplate materials. The polarization modulations of the MgTe 2 O 5 devices working at 532 nm indicate that excellent zero-order half and quarter waveplates have been successfully prepared. In addition, achromatic waveplates used in the visible, near-infrared, and mid-infrared ranges have also been calculated. The MgTe 2 O 5 crystal not only exhibits a high laser damage threshold of up to 2.7 GW cm −2 but also shows a wide transmission range from 0.37 to 6.3 µm. These results provide an excellent waveplate crystal and explore the applications of biaxial crystals.
研究领域:
光学材料
·
晶体工程
·
光子学
·
偏振光学
·
无机合成
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Science China-Materials
·
2024
·Vol. 67
·期 3
·914-920
·
IF 6.8
Zhang Zhiyuan,Xu Die,Tudi Abudukadi,Yang Zhihua,Han Shujuan,Pan Shilie
Using the well-known LiB 3 O 5 as the template, by improving the angle between B 2 O 5 units in its structure to reduce birefringence, two novel birefringent crystals Li 2 MLaB 18 O 30 (M = Rb, Cs) for preparing zero-order wave-plates are obtained by a high-temperature solution method in a closed system. Interestingly, the neighboring B 2 O 5 units are aligned almost perpendicularly, making them exhibit tiny birefringence, which is much smaller (0.0032@532 nm and 0.0027@532 nm, respectively) than that of the commercial quartz crystal (Δ n ~0.0092@visible region). Moreover, the ultraviolet cutoff edges of Li 2 MLaB 18 O 30 (M = Rb, Cs) crystals are below 200 nm, demonstrating that they can be applied as zero-order waveplate materials in the deep-ultraviolet region.
研究领域:
材料科学
·
光学
·
晶体工程
·
光子学
✓ 已验证
DOI
高影响因子
Nature Photonics
·
2021
·Vol. 15
·期 11
·813-816
·
IF 38.771
Chen Xiaomei,Lu Wen-gao,Tang Jialun,Zhang Yongyou,Wang Yongtian,Scholes Gregory D.,Zhong Haizheng
Waveplates are widely used in photonics to control the polarization of light 1 , 2 . Often, they are fabricated from birefringent crystals that have different refractive indices along and normal to the crystal axis. Similar optical components are found in the natural world, including the eyes of mantis shrimp 3 , 4 and the iridescence of giant clams 5 , fish 6 and plants 7 . Optical retardation in biology relies on sophisticated self-assembly, whereas man-made systems comprise multiple-layered materials 8 , 9 , 10 , 11 . Here we report a discovery that bridges these two design principles. We observe wideband achromatic retardation in the visible and near-infrared (532–800 nm) regions for Cs 4 PbBr 6 perovskite crystals embedded with CsPbBr 3 nanocrystals. We explain our observations as matched dispersions of the refractive indices of the ordinary and extraordinary rays caused by the ordered embedding of the nanocrystals in the host. The wideband performance and ease of fabrication of these perovskite materials are attractive for future applications.
研究领域:
光子学
·
材料科学
·
光学
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2025
·
IF 3.3
Shaohua Liu,Li-Li Zhang,Ke Li,Xiaotian Ma,Xifa Long,Yun Yang
The capability of zero-order waveplates to manipulate the polarization of fundamental-frequency light has garnered significant attention in light of the rapid advancements in laser technology. In particular, zero-order waveplate materials in the deep-ultraviolet range (DUV; λ < 200 nm) are in urgent and short supply. In this study, three aluminum fluorides, AlF3 (P6/mmm), BaAlF5 (I4/m), and Li2KAl2F9 (C2/m), have been successfully designed and synthesized through a strategy that combines perfluorinated [AlF6] group with alkali and alkaline-earth metals. The results of experimental and theoretical calculations indicate that all three new aluminum fluorides have a short cutoff edge (λ < 200 nm) and small birefringence (0.0006 ~ 0.0056 @1064 nm). Theoretical calculations indicate that AlF3 (P6/mmm) has the shortest wavelength of 125 nm, which is comparable to the shortest wavelength of the commercially available MgF2. However, its birefringence of 0.0006 @1064 nm is about 20 times lower than that of the MgF2 (0.012 @546 nm), making it highly advantageous for fabricating deep-ultraviolet zero-order waveplate materials. Further microscopic analysis reveals that the [AlF6] group exhibits a substantial band gap of 9.17 eV and small polarizability anisotropy, indicating that the aluminum fluorides are potential candidates for designing suitable compounds for DUV zero-order waveplate materials.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DALTON TRANSACTIONS
·
2025
·
IF 3.3
Xiaoming Wang,Zhiyuan Zhang,Juanjuan Lu,Feng Zhang,Shilie Pan
Zero-order waveplates, which are used to modulate the polarization of light, play a crucial role in scientific instrumentation, optical communications, and the laser industry. However, owing to the limitations imposed by birefringence and absorption edges, only few materials can produce desirable birefringence with suitable transparency in the ultraviolet (UV) and deep ultraviolet (DUV) regions. Borates represent promising materials with widely adjustable birefringence. In this study, we successfully synthesized two new borates, Li2CeRbB18O30 and Li2Cs2SrB18O30, using solid-state reactions in vacuum-sealed tubes; the fundamental building blocks (FBBs) of the two compounds are B3O7 and B9O19 units, respectively. Notably, Li2CeRbB18O30 and Li2Cs2SrB18O30 possess very low birefringence values of 0.0058 at 546 nm and 0.0068 at 546 nm, respectively, considerably lower than that of a commercial quartz waveplate (0.0092 at 532 nm). UV-Vis-NIR diffuse reflectance measurements show that the UV cutoff edges of Li2CeRbB18O30 and Li2Cs2SrB18O30 are lower than 320 and 200 nm, corresponding to the bandgaps of 3.20 and 6.20 eV, respectively. These two compounds can serve as potential zero-order waveplate materials in the UV and DUV regions.
研究领域:
材料科学
·
光学工程
·
无机化学
·
凝聚态物理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER
·
2025
·
IF 4.5
Zhengqi Tan,Xueqing Han,Wenhao Guo,Xingyue Fang,Zhouhang Lei,Jungen Chen,Liangbin Li
The quarter-wave plate (QWP), utilized in the visible range, often exhibits significant extraordinary wavelength dispersion and is essential for enhancing the imaging quality of new display devices. However, current design strategies frequently encounter limitations in physical or optical properties, restricting their application potential. We proposed a design strategy based on polyvinyl alcohol (PVA) to obtain an adjustable extraordinary wavelength dispersion materials through a simple reaction. The biphenyl side group offers orientation perpendicular to the main chain, providing suitable negative birefringence, which facilitates our design based on birefringence dispersion control (BDC) methods. We synthesized materials varying degrees of acetalization and regulated their retardation values and wavelength dispersion through uniaxial stretching the prepared films. The film with a particularly wide wavelength dispersion range in the wavelength range of 400–800 nm is obtained, which provides an excellent basis for the fabrication of wideband quarter-wave plates. We proposed a molecular design that enables wide-range wavelength dispersion regulation and investigated the contribution of stretching conditions. This provides a theoretical support and design basis for the subsequent work to prepare films close to the ideal quarter-wave plate.
研究领域:
材料科学
·
光学工程
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）