Optical Materials最新文献

{"title":"Unsubstantiated synthesis of Cs2CuBiCl6 double perovskite","authors":"Lixia Xiao ,&nbsp;Junwei Guo ,&nbsp;Gang Tang ,&nbsp;Zewen Xiao","doi":"10.1016/j.optmat.2025.116892","DOIUrl":"10.1016/j.optmat.2025.116892","url":null,"abstract":"<div><div>Halide perovskites have revolutionized optoelectronics due to their tunable bandgaps, high absorption coefficients, and ease of fabrication. Double perovskites, with their general formula A₂B(I)B(III)X₆, offer additional compositional flexibility and stability, making them attractive for applications such as light-emitting diodes and photodetectors. However, the synthesis of Cu(I)-based double perovskites remains challenging due to the thermodynamic instability arising from the high energy of Cu 3 d¹⁰ orbitals, which favor tetrahedral coordination over the octahedral coordination required for double perovskites. Recently, Neelu et al. reported the synthesis of Cs₂CuBiCl₆, claiming it as the first successful synthesis of a Cu(I)-based double perovskite [Opt. Mater. 143 (2023) 114250]. However, a critical reevaluation of their data reveals inconsistencies that challenge this claim. This comment highlights the lack of evidence supporting the synthesis of Cs₂CuBiCl₆ and underscores the challenges associated with synthesizing thermodynamically unstable Cu(I)-based double perovskites.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116892"},"PeriodicalIF":3.8,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610688","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}

{"title":"Growth, spectral and 1.5–1.6 μm laser properties of Er:Yb:LuYSiO5 mixed crystal","authors":"Hao Zhan ,&nbsp;Xilei Cao ,&nbsp;Xinghong Gong ,&nbsp;Jianhua Huang ,&nbsp;Yanfu Lin ,&nbsp;Yidong Huang ,&nbsp;Yujin Chen","doi":"10.1016/j.optmat.2025.116893","DOIUrl":"10.1016/j.optmat.2025.116893","url":null,"abstract":"<div><div>An Er:Yb:LuYSiO₅ crystal was grown by the Czochralski method, and its room-temperature polarized spectral properties were investigated. The crystal has a peak absorption cross-section of 2.38 × 10⁻²⁰ cm² at 979 nm and a peak emission cross-section of 1.06 × 10⁻²⁰ cm² at 1547 nm for <em>E//Z</em> polarization. The fluorescence lifetime of the ⁴I_13/2 multiplet of Er³⁺ is 6.48 ms and Yb³⁺→Er³⁺ energy transfer efficiency is 65 %. Because of the spectral inhomogeneous broadening caused by the combination of multiple cationic sites and mixed crystal structure, the full width at half maximum of the gain spectrum of the crystal is 27 nm for <em>E//Z</em> polarization at an inversion parameter of 0.5. Pumped by a 975.4 nm diode laser, a 1579 nm continuous-wave laser with a maximum output power of 95 mW and a slope efficiency of 11.7 %, as well as a multi-band tunable laser in 1546–1555, 1566–1574 and 1617–1620 nm were achieved in the crystal, respectively. The maximum output power of the tunable laser was 26 mW at 1554 nm.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116893"},"PeriodicalIF":3.8,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593084","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}

{"title":"High-performance photodetector applications of antimony doped indium sulfide thin films: Preparation, characterization and optical studies","authors":"Prashantha Murahari ,&nbsp;Devarajan Alagarasan ,&nbsp;S.S. Hegde ,&nbsp;Hitha D. Shetty ,&nbsp;Meenakshi Verma ,&nbsp;Nasir A. Siddiqui ,&nbsp;Aslam Khan ,&nbsp;Shiva Prasad Kollur","doi":"10.1016/j.optmat.2025.116903","DOIUrl":"10.1016/j.optmat.2025.116903","url":null,"abstract":"<div><div>Herein we have described the preparation and UV photodetection properties of Antimony (Sb) doped Indium Sulfide (In₂S₃) thin films. The nebulizer spray pyrolysis method was used to deposit the undoped and Sb-doped In₂S₃ thin films onto glass substrates at 350 °C. The X-ray diffraction (XRD) analysis verified that all deposited films exhibited the cubic phase β-In₂S₃ structure, with the highest crystallinity observed in the 3 wt% Sb-doped film. The morphological analysis showed densely packed, relatively larger grains in the 3 wt% Sb-doped In₂S₃ thin film. From UV–Vis investigation, it was observed that Sb doping enhanced optical absorption. The key parameters of the photodetectors were determined by Current-Voltage and Current-Time measurements. Among the fabricated photodetectors, the 3 wt% Sb-doped In₂S₃ thin film exhibited remarkable performance, with calculated Responsivity (<em>R</em>) of 1.020 A/W, Detectivity (<em>D</em>∗) of 32.5 × 10¹⁰ Jones, and External Quantum Efficiency (EQE) of 346 %. The photo-response investigation provided rise and fall times of 0.43 s and 0.26 s respectively, for the 3 wt% Sb-doped sample. Additionally, the stability test demonstrates the durability, reliability and suitability of the photodetectors for long-term applications. The remarkable enhancement in photodetector properties achieved through Sb doping highlights the exceptional quality and potential of the 3 wt% Sb-doped In₂S₃ thin films, setting a new standard for performance in advanced UV detection applications.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116903"},"PeriodicalIF":3.8,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610684","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}

{"title":"Beam deflection based on the composition gradient and quadratic electro-optic effect of unpoled tetragonal SBN crystal","authors":"Songtao Fan,&nbsp;Bing Liu,&nbsp;Yuanyuan Zhang,&nbsp;Huajian Yu,&nbsp;Rui Zhang,&nbsp;Yuguo Yang,&nbsp;Fulin Zhang,&nbsp;Wendie Chen,&nbsp;Xuping Wang","doi":"10.1016/j.optmat.2025.116902","DOIUrl":"10.1016/j.optmat.2025.116902","url":null,"abstract":"<div><div>SBN crystals are excellent electro-optic materials, generally known for exhibiting a prominent linear electro-optic effect in the tetragonal phase. In this work, an SBN crystal with a composition gradient along the growth direction was prepared with the Czochralski method from an incongruently melting composition. Using the Mach-Zehnder interferometry technique, the unpoled tetragonal phase SBN crystal was confirmed to exhibit a quadratic electro-optic effect, with the coefficient measured to be approximately 10⁻¹⁵ m²/V². The quadratic EO effect was mainly attributed to the high symmetry introduced by the randomly distributed domain structures. However, the poling effect of a high applied voltage can align the dipoles in each microdomain in the same direction, leading to the transition of the crystal from a quadratic EO effect to a linear one. A beam deflection system utilizing the composition gradient and quadratic electro-optic (EO) effect was established. At lower voltages, the deflection angle exhibited a parabolic increase with the applied voltage, while at higher voltages, it decreases due to the poling effect. A maximum deflection angle of 10 mrad was obtained by applying 880 V/mm on an SBN crystal with the dimension of 5.8 mm × 2 mm × 1 mm. A theoretical model that accounts for both the gradient of the intrinsic refractive index and the EO effect was constructed. The derived expression for the deflection angle's dependence on the applied voltage demonstrated that the deflection angle resulting from the quadratic EO effect is considerably greater than that produced by the linear EO effect.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116902"},"PeriodicalIF":3.8,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577275","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}

{"title":"Promoting the photocatalytic capacity of Type I heterojunction (Bi12O17Cl2/Sb2O3) by incorporating MWCNTs for boosted carbamazepine degradation mechanism","authors":"Zaid H. Jabbar ,&nbsp;Bassim H. Graimed ,&nbsp;Ayah A. Okab ,&nbsp;Saad H. Ammar ,&nbsp;Ali Majdi","doi":"10.1016/j.optmat.2025.116883","DOIUrl":"10.1016/j.optmat.2025.116883","url":null,"abstract":"<div><div>The photocatalytic heterojunctions is considered a suitable methodology to enhance photoactivity by boosting visible light harvesting and hampering charge recombination. Herein, bismuth oxychloride Bi₁₂O₁₇Cl₂ nanosheets and pyramidal Sb₂O₃ heterogeneous junctions were built via the solvothermal method and assembled with multi-wall carbon nanotubes (MWCNTs). Compared with single photocatalysts, the absorption ability of Bi₁₂O₁₇Cl₂/Sb₂O₃/MWCNT was meaningfully enhanced due to the MWCNT's ability to modify the electronic structure of Bi₁₂O₁₇Cl₂/Sb₂O₃, decreasing the bandgap value and increasing the visible light response. The morphological tests presented a ternary hybrid with pyramidal Sb₂O₃ particles anchored on Bi₁₂O₁₇Cl₂ nanosheets interconnected with MWCNT nanotubes, forming the Bi₁₂O₁₇Cl₂/Sb₂O₃/MWCNT network with abundant active sites. Under simulated solar energy, the Bi₁₂O₁₇Cl₂/Sb₂O₃/MWCNT hybrid photocatalyst exhibited the highest carbamazepine (CBZ) drug photodegradation activity (90.2 % within 75 min). These results confirm a suitable Type I heterojunction between Bi₁₂O₁₇Cl₂ and Sb₂O₃ assisted by MWCNT, allowing a speedy transfer of photo-charges at the interface between Bi₁₂O₁₇Cl₂ and Sb₂O₃. A reaction mechanism is projected and deliberated via trapping tests, photoluminescence, and electrochemical tests. This work may introduce important concepts to enhance the weak heterojunction systems (Type I and Type II) by integrating with effective charge mediators (like MWCNT), achieving competing catalytic characteristics with Z-type or S-scheme mechanisms.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116883"},"PeriodicalIF":3.8,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577200","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}

{"title":"Effect of the V/III ratio on the quality of strain-balanced GaInAs/AlInAs superlattices in quantum cascade lasers","authors":"Shiya Zhang ,&nbsp;Lianqing Zhu ,&nbsp;Lidan Lu ,&nbsp;Jintao Cui ,&nbsp;Han Jia ,&nbsp;Shuhao Du ,&nbsp;Tuo Chen ,&nbsp;Mingyu Li","doi":"10.1016/j.optmat.2025.116882","DOIUrl":"10.1016/j.optmat.2025.116882","url":null,"abstract":"<div><div>The epitaxial growth of strain-balanced III-V ternary alloys remains a critical challenge for advancing the industrialization of quantum cascade lasers (QCLs). In this study, we propose a calibration approach for strain-balanced superlattice composition and investigate the impact of V/III ratios on the growth of strain-balance Ga_0.31In_0.69As/Al_0.64In_0.36As/InP superlattices. Using a combination of atomic force microscopy (AFM), X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive spectroscopy (SEM/EDS), photoluminescence (PL), and numerical analysis, a low threshold point for the growth conditions of V/III in the system of this component is found. Notably, a V/III ratio of 10 is found to optimize surface morphology and ensure high-quality internal structures. These findings offer a valuable reference for the epitaxial growth of complex structures in QCLs, facilitating further advancements in this field.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116882"},"PeriodicalIF":3.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685189","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}

{"title":"A review of 2 μm all-solid-state picosecond laser sources doped with Tm3,+/Ho3,+ ions","authors":"Hong-Wei Yin ,&nbsp;Yun-Fei Li ,&nbsp;Yun-Fei Yang ,&nbsp;Chen-Yu Zhu ,&nbsp;Da Li ,&nbsp;Gong Wang ,&nbsp;Shu-Ping Hou ,&nbsp;Yu Yu ,&nbsp;Yulei Wang ,&nbsp;Zhiwei Lu","doi":"10.1016/j.optmat.2025.116888","DOIUrl":"10.1016/j.optmat.2025.116888","url":null,"abstract":"<div><div>All-solid-state 2 μm ultrafast laser sources exhibit significant potential in diverse application fields. Their wavelength falls within the atmospheric window, effectively covering the absorption spectral lines of numerous molecules. The picosecond all-solid-state laser sources with a centre wavelength of 2 μm serves as a prime example, gaining prominence in the mid-infrared ultrafast laser domain recently. This paper first outlines several representative 2 μm solid-state ultrafast lasers. It then elaborates on crucial technologies for generating 2 μm ps lasers, focusing on mode-locking techniques. Additionally, it reviews recent progress in picosecond Tm³⁺/Ho³⁺ ions-doped all-solid-state laser sources operating in the 2 μm wavelength range. What's more, the discussion highlights key applications of all-solid-state picosecond laser sources that utilize Tm³⁺ and Ho³⁺. In conclusion, the paper traces the evolution of picosecond all-solid-state laser sources with a central wavelength of 2 μm and offers perspectives on future advancements.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116888"},"PeriodicalIF":3.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610687","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}

{"title":"Enhanced optical and magnetic properties of NiZrO3-modified Bi1/2Na1/2TiO3 solid solutions synthesized via chemical method","authors":"Nguyen Thi Lan Anh ,&nbsp;Nguyen Huu Lam ,&nbsp;Dang Duc Dung","doi":"10.1016/j.optmat.2025.116891","DOIUrl":"10.1016/j.optmat.2025.116891","url":null,"abstract":"<div><div>Solid solutions of (1-<em>x</em>)Bi_1/2Na_1/2TiO₃ + <em>x</em>NiZrO₃ were successfully synthesized via a chemical method. Structural analysis using X-ray diffraction and Raman scattering confirmed the effective incorporation of NiZrO₃ into the Bi_1/2Na_1/2TiO₃ lattice. The random substitution of Ni and Zr cations at both <em>A</em>- and <em>B</em>-sites of the Bi_1/2Na_1/2TiO₃ induced significant lattice distortions and led to a reduction in the optical band gap. Furthermore, the magnetic properties exhibited notable enhancements, varying with NiZrO₃ concentration. The influence of co-modification at <em>A</em>- and <em>B</em>-sites on the magnetic behavior was systematically analyzed. These findings provide critical insights into tailoring optical and magnetic properties in lead-free ferroelectric materials, emphasizing their potential for advanced applications in electronics, spintronics, and energy devices.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116891"},"PeriodicalIF":3.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577274","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}

{"title":"Small-angle X-ray scattering analysis of polymer optical fibers","authors":"M. Ferraro ,&nbsp;R. Filosa ,&nbsp;Q.A. Alamu ,&nbsp;K. Kiedrowski ,&nbsp;M. Jupé ,&nbsp;M. Leonetti ,&nbsp;S. Wabnitz ,&nbsp;B. Marmiroli ,&nbsp;R.C. Barberi ,&nbsp;V. Formoso ,&nbsp;R.G. Agostino","doi":"10.1016/j.optmat.2025.116856","DOIUrl":"10.1016/j.optmat.2025.116856","url":null,"abstract":"<div><div>Optical fiber communication networks, lasers, and sensing technologies have advanced significantly worldwide. Beyond traditional glass fibers, polymer optical fibers (POFs) are gaining attention for short-distance communication and healthcare applications. These fibers offer advantages such as lightweight construction and high durability but face challenges including crystallization and contamination during the drawing process. Advanced techniques are necessary to characterize POFs at the nanoscale. This study employs small-angle X-ray scattering (SAXS) to analyze fiber structure, anisotropy, and crystallinity, providing valuable insights into their material properties. Our findings introduce a novel approach to POF characterization, with potential integration into drawing towers for real-time quality control and applications in studying laser-induced damage.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116856"},"PeriodicalIF":3.8,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Saturable absorption, optical limiting and ultrafast laser-induced two-photon fluorescence in Caesalpinia sappan (sappanwood) natural dye","authors":"Preetha Kurungod Prabhakaran,&nbsp;Muthaiyan Xavier Suresh,&nbsp;Rajdeep Singh Payal","doi":"10.1016/j.optmat.2025.116886","DOIUrl":"10.1016/j.optmat.2025.116886","url":null,"abstract":"<div><div>In this work, we extract the natural dye present in the bark of the medicinal tree <em>Caesalpinia Sappan</em> (sappanwood) and investigate its linear and nonlinear optical (NLO) properties. Nonlinear refraction and absorption are measured by Z-scan at 532 nm using continuous wave and pulsed (5 ns) Nd:YAG lasers, and two-photon fluorescence is measured using 800 nm ultrafast (100 fs) pulses obtained from a Ti:Sapphire laser. The dye exhibits a marked transition from saturable to reverse saturable absorption depending on its concentration and laser intensity. Nonlinear refraction and saturable absorption (SA) are observed under CW excitation at relatively lower laser intensities (≈10⁴ W/m²) whereas reverse saturable absorption (RSA) is observed at higher intensities (≈10⁶ W/m²). Nonlinear refractive indices (n₂) are in the order of 10⁻⁹ m²/W, saturation intensities (I_s) are in the order of 10⁵ W/m², and effective nonlinear absorption coefficients (<em>β</em>) are in the order of 10⁻⁵ to 10⁻³ m/W. For pulsed excitation, SA is observed for intensities in the range of 10¹⁰–10¹² W/m² while RSA is seen at 10¹³ W/m² <em>β</em> values obtained for pulsed excitation are in the range of 10⁻¹¹ to 10⁻¹⁰ m/W. Measured two-photon fluorescence spectra resemble the normal fluorescence spectrum of the dye. These NLO results are comparable to those reported for efficient NLO materials in literature, indicating the potential application of <em>Caesalpinia Sappan</em> dye in the generation of short laser pulses, optical switching, optical limiting for eye and sensor protection, and imaging of tissues and other biological matter.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116886"},"PeriodicalIF":3.8,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563837","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}