Optical Materials Express最新文献_第6页

Ultraviolet active novel chalcogenides BAlTe2 (B = Rb, Cs): the structural, optoelectronic, mechanical, and vibrational properties for energy harvesting applications through first principles approach 紫外活性新型铬化物 BAlTe2（B = Rb、Cs）：通过第一性原理研究能量收集应用的结构、光电、机械和振动特性

IF 2.8 3区材料科学

Optical Materials Express Pub Date : 2024-02-07 DOI: 10.1364/ome.506814

Rabail Fatima, R. M. Arif Khalil, Muhammad Iqbal Hussain, and Fayyaz Hussain

{"title":"Ultraviolet active novel chalcogenides BAlTe2 (B = Rb, Cs): the structural, optoelectronic, mechanical, and vibrational properties for energy harvesting applications through first principles approach","authors":"Rabail Fatima, R. M. Arif Khalil, Muhammad Iqbal Hussain, and Fayyaz Hussain","doi":"10.1364/ome.506814","DOIUrl":"https://doi.org/10.1364/ome.506814","url":null,"abstract":"In this study, ternary aluminum-based chalcogenide materials are discussed since these are found to be very appealing for multifunction devices. Here, the structural, optoelectronic, mechanical, and vibrational properties of RbAlTe2 and CsAlTe2 are observed via density functional theory (DFT). An indirect energy band gap is noted to be increased from 1.33 eV to 1.96 eV for RbAlTe2 and 1.28 eV to 1.83 eV for CsAlTe2 by employing improved functional as modified by Trans and Blaha. The calculated formation energy appears to be decreasing, such as -4.39 and -3.83 eV for RbAlTe2 and CsAlTe2, respectively. The investigation of PDOS revealed that Rb-d, Cs-p, Al-p/s, and Te-p orbitals are located prominently and contribute mainly to boosting the conduction mechanism. The optical results declare CsAlTe2 as the strongest absorptive substance, which may be used to devise optoelectronic and photovoltaic devices. Moreover, six independent elastic constants show that these are mechanically stable materials, their brittle nature is confirmed by obeying Born’s stability requirements. According to the density functional perturbation theory (DFPT) approach used for analyzing phonon dispersion, there is no imaginary phonon frequency in both cases (RbAlTe2 and CsAlTe2). The overall results show that the studied materials are potential candidates for applications in photovoltaic and optoelectronic devices.","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":"77 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139768814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Broadband switchable infrared absorbers using phase-change materials 使用相变材料的宽带可切换红外线吸收器

IF 2.8 3区材料科学

Optical Materials Express Pub Date : 2024-02-02 DOI: 10.1364/ome.509650

Md Tanvir Emrose, Emily L. Payne, Chenglong You, and Georgios Veronis

引用次数: 0

Parametric metasurfaces for electromagnetic wave amplification 用于电磁波放大的参数元曲面

IF 2.8 3区材料科学

Optical Materials Express Pub Date : 2024-01-29 DOI: 10.1364/ome.515132

Fedor V. Kovalev and Ilya V. Shadrivov

引用次数: 0

Terahertz-capillary electrophoresis (THz-CE) for direct detection of separated substances in solutions 太赫兹毛细管电泳（THz-CE）用于直接检测溶液中的分离物质

IF 2.8 3区材料科学

Optical Materials Express Pub Date : 2024-01-29 DOI: 10.1364/ome.500594

Keiko Kitagishi, Takayuki Kawai, Masayoshi Tonouchi, and Kazunori Serita

引用次数: 0

Optical parameter extraction for metamaterials via robust effective and equivalent medium models 通过稳健的有效和等效介质模型提取超材料的光学参数

IF 2.8 3区材料科学

Optical Materials Express Pub Date : 2024-01-26 DOI: 10.1364/ome.514897

Ekin Gunes Ozaktas, Sreyas Chintapalli, and Susanna M. Thon

{"title":"Optical parameter extraction for metamaterials via robust effective and equivalent medium models","authors":"Ekin Gunes Ozaktas, Sreyas Chintapalli, and Susanna M. Thon","doi":"10.1364/ome.514897","DOIUrl":"https://doi.org/10.1364/ome.514897","url":null,"abstract":"Metamaterials are complex structured mixed-material systems with tailored physical properties that have found applications in a variety of optical and electronic technologies. New methods for homogenizing the optical properties of metamaterials are of increasing importance, both to study their exotic properties and because the simulation of these complex structures is computationally expensive. We propose a method to extract a homogeneous refractive index and wave impedance for inhomogeneous materials. We examine effective medium models, where inhomogeneities are subwavelength, and equivalent models where features are larger. Homogenization is only physically justified in the former; however, it is still useful in the latter if only the reflection, transmission, and absorption are of interest. We introduce a resolution of the branching problem in the Nicolson-Ross-Weir method that involves starting from the branch of the complex logarithm beginning with the minimum absolute mean derivative and then enforcing continuity, and also determine an effective thickness. We demonstrate the proposed method on patterned PbS colloidal quantum dot films in the form of disks and birefringent gratings. We conclude that effective models are Kramers-Kronig compliant, whereas equivalent models may not be. This work illuminates the difference between the two types of models, allowing for better analysis and interpretation of the optical properties of complex metamaterials.","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":"6 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139585353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermo-optic characterization of SU-8 at cryogenic temperature 低温下 SU-8 的热光学特性分析

IF 2.8 3区材料科学

Optical Materials Express Pub Date : 2024-01-24 DOI: 10.1364/ome.509626

Trisha Chakraborty, Oscar A. Jimenez Gordillo, Michael Barrow, Alan R. Kramer, Michal Lipson, Thomas E. Murphy, and Karen E. Grutter

引用次数: 0

Investigation on gallium doping Ge-As-S chalcogenide glass and glass ceramics 关于掺镓的 Ge-As-S 卤化物玻璃和玻璃陶瓷的研究

IF 2.8 3区材料科学

Optical Materials Express Pub Date : 2024-01-23 DOI: 10.1364/ome.516637

Ziqiang Liu, Jierong Gu, Guang Jia, Wenfeng Zheng, Shuangquan Xie, Xiang Shen, and Zijun Liu

{"title":"Investigation on gallium doping Ge-As-S chalcogenide glass and glass ceramics","authors":"Ziqiang Liu, Jierong Gu, Guang Jia, Wenfeng Zheng, Shuangquan Xie, Xiang Shen, and Zijun Liu","doi":"10.1364/ome.516637","DOIUrl":"https://doi.org/10.1364/ome.516637","url":null,"abstract":"In this work, bulk chalcogenide glasses (Ge35As10S55)100-xGax (x = 0,1,3,5,7,9) were prepared using the traditional melt quenching method, and glass ceramics were prepared to improve the mechanical properties through heat treatment. Optical, thermal and mechanical properties of the glass and glass ceramic samples were measured by FTIR, DSC and Vickers hardness analysis. Results indicate that glass samples exhibited about 70% IR-transmission around 3–12 µm. The hardness of these pure glasses increased from 231 to 282 kgf/mm2 through gallium doping and improvement of melt-quenching conditions. The type of nanocrystals precipitated in the glass ceramics were characterized by XRD. Existence of a γ-Ga2S3 crystal phase enhanced the hardness of the glass. Also, the size and distribution of nanocrystals in the microstructure of the glass ceramics were investigated by SEM. The hardness of (Ge35As10S55)93Ga7 glass reached to 302.6 kgf/mm2 by precipitation of nanocrystals with diameter smaller than 500 nm.","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":"34 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139559752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intense O + E + S-band emission from Pr3+-doped ZnF2-based glasses 掺杂 Pr3+ 的 ZnF2 基玻璃的强烈 O + E + S 波段发射

IF 2.8 3区材料科学

Optical Materials Express Pub Date : 2024-01-22 DOI: 10.1364/ome.514278

Jinming Yan, Zhixu Jia, Junjie Wang, Chuanze Zhang, Fangning Wang, Yuting Mei, Fanchao Meng, Yasutake Ohishi, Daming Zhang, Weiping Qin, Fei Wang, and Guanshi Qin

{"title":"Intense O + E + S-band emission from Pr3+-doped ZnF2-based glasses","authors":"Jinming Yan, Zhixu Jia, Junjie Wang, Chuanze Zhang, Fangning Wang, Yuting Mei, Fanchao Meng, Yasutake Ohishi, Daming Zhang, Weiping Qin, Fei Wang, and Guanshi Qin","doi":"10.1364/ome.514278","DOIUrl":"https://doi.org/10.1364/ome.514278","url":null,"abstract":"Pr3+-doped ZnF2-based glasses were prepared by using a melt-quenching method in dry N2 atmosphere. Under the excitation of a 588 nm light emitting diode (LED), ultrabroadband emissions ranging from 1245 to 1640 nm were obtained from the Pr3+-doped ZnF2-based glasses, which originate from the transitions 1D2→1G4 (producing E + S-band emission) and 1G4→3H5 (producing O-band emission) of Pr3+. The shape of the emission spectra could be tailored by varying the concentration of Pr3+. Emission spectra with the maximum full width at half maximum (FWHM) of 215 nm (1289 nm-1504 nm, covering the O + E + S-band) was obtained in the ZnF2-based glass at a doping concentration of 5000 ppm. The effects of the phonon energy of the matrix on O + E + S-band emission were also investigated. Our results showed that Pr3+-doped ZnF2-based glasses with low phonon energy might be used for constructing O + E + S-band lasers and optical amplifiers.","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":"31 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139559788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Growth, characterization, and efficient laser operation of Czochralski- and micro-pulling-down-grown Yb3+:YScO3 mixed sesquioxides 偶氮拉尔斯基和微拉下生长的 Yb3+:YScO3 混合倍半氧化物的生长、表征和高效激光操作

IF 2.8 3区材料科学

Optical Materials Express Pub Date : 2024-01-09 DOI: 10.1364/ome.513925

Sascha Kalusniak, Anastasia Uvarova, Ines Arlt, Lena Hülshoff, Patty Eckhof, Philipp Wegener, Mario Brützam, Steffen Ganschow, Christo Guguschev, Hiroki Tanaka, and Christian Kränkel

{"title":"Growth, characterization, and efficient laser operation of Czochralski- and micro-pulling-down-grown Yb3+:YScO3 mixed sesquioxides","authors":"Sascha Kalusniak, Anastasia Uvarova, Ines Arlt, Lena Hülshoff, Patty Eckhof, Philipp Wegener, Mario Brützam, Steffen Ganschow, Christo Guguschev, Hiroki Tanaka, and Christian Kränkel","doi":"10.1364/ome.513925","DOIUrl":"https://doi.org/10.1364/ome.513925","url":null,"abstract":"We report on the growth, spectroscopy and laser operation of Yb3+-doped mixed sesquioxide crystals. Various Yb3+-doped crystals with compositions close to (Y0.5Sc0.5)2O3 have been successfully grown by the Czochralski method and by the micro-pulling down (µ-PD) method. Our spectroscopic investigations reveal broadened stimulated emission and absorption cross-section spectra originating from the structural disorder of the mixed crystals. We find the peak wavelengths to shift by ∼1.6 nm between Y:Sc-ratios of 54:46 and 46:54 and confirm a linear relation of the peak position with the lattice constant of the host composition. In the laser experiments, we obtain highly efficient continuous-wave laser operation under pumping with an optically-pumped semiconductor laser (OPSL) at ∼975 nm, reaching slope efficiencies of up to 89% at optical-to-optical efficiencies exceeding 80% at laser wavelengths between 1037 nm and 1086 nm.","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":"1 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139408696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evolution of point defects in mechanical cracks of fused silica after CO₂ laser melting CO₂ 激光熔融后熔融石英机械裂缝中点缺陷的演变

IF 2.8 3区材料科学

Optical Materials Express Pub Date : 2024-01-05 DOI: 10.1364/ome.500395

Zhichao Liu, Ting Tan, Geng Feng, Shengfei Wang, Jian Zhang, Hongjun Liu, Qinghua Zhang, Fei Fan, Jian Wang, Qiao Xu

引用次数: 0