Asish P. Venkitesh, Abinash Barthakur, Przemyslaw Kula and Surajit Dhara*,
{"title":"Two-Way Tuning of Whispering Gallery Mode Resonance of Dual-Frequency Nematic Liquid Crystal Microdroplets","authors":"Asish P. Venkitesh, Abinash Barthakur, Przemyslaw Kula and Surajit Dhara*, ","doi":"10.1021/acsaom.4c0042410.1021/acsaom.4c00424","DOIUrl":"https://doi.org/10.1021/acsaom.4c00424https://doi.org/10.1021/acsaom.4c00424","url":null,"abstract":"<p >Nematic liquid crystals whose dielectric anisotropy changes sign above the crossover frequency are known as dual-frequency nematic liquid crystals (DFNLCs). Here, we report experimental studies on the whispering gallery mode (WGM) optical resonance in fluorescent dye-doped DFNLC microdroplets. The microdroplets are dispersed in a phospholipid-doped glycerol, forming a radial director structure. We investigate the effect of the amplitude and frequency of the applied electric field on the morphology and WGM resonance. We show that the WGM resonance can be tuned by changing the amplitude of the applied field at a fixed frequency and by varying the frequency at a fixed amplitude. Our experiments demonstrate that dual-frequency nematic liquid crystals provide new opportunities for tuning WGM resonance with frequency where the ability to tune by the amplitude of the electric field is limited.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"2 12","pages":"2605–2611 2605–2611"},"PeriodicalIF":0.0,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143125529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alexis T. Phillips, Judy C. Chen, Joselle M. McCracken and Timothy J. White*,
{"title":"Dynamic Infrared Reflective Filters Prepared from Cholesteric Liquid Crystalline Elastomers","authors":"Alexis T. Phillips, Judy C. Chen, Joselle M. McCracken and Timothy J. White*, ","doi":"10.1021/acsaom.4c0040410.1021/acsaom.4c00404","DOIUrl":"https://doi.org/10.1021/acsaom.4c00404https://doi.org/10.1021/acsaom.4c00404","url":null,"abstract":"<p >Cholesteric liquid crystalline elastomers (CLCEs) exhibit selective reflection due to a periodic variation of the refractive index throughout the thickness of the material. CLCEs can be formulated and prepared to reflect light in the UV, visible, and infrared regions of the electromagnetic spectrum by simply adjusting the concentration of the chiral species. This report details the synthesis and preparation of appropriately thick CLCEs that maximize reflection in both the short-wave and mid-wave infrared (SWIR, MWIR) regions of the electromagnetic spectrum. As elastomers, fully solid CLCEs can be mechanically deformed to tune the selective reflection. This report details approaches to tune selective reflection, including mechanical deformation, incidence angle, thermochromism, and dielectric actuation. Generally, the optomechanical response of the CLCE at longer pitch lengths (e.g., infrared reflecting) is comparatively less than that of prior examinations of analogous compositions with a shorter pitch. Furthermore, the contribution of modulus and dielectric breakdown to electromechanical response is examined.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"2 12","pages":"2559–2567 2559–2567"},"PeriodicalIF":0.0,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143125497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Haitang Hu, Miaomiao Wang, Shoujun Ding*, Chuancheng Zhang, Hao Ren, Yong Zou and Wenpeng Liu,
{"title":"Trivalent Dy3+ and Eu3+ Ions Codoped High-Entropy Gadolinium Yttrium Scandium Aluminum Garnet Crystals for Promising Visible Solid-State Laser and Anticounterfeiting Applications","authors":"Haitang Hu, Miaomiao Wang, Shoujun Ding*, Chuancheng Zhang, Hao Ren, Yong Zou and Wenpeng Liu, ","doi":"10.1021/acsaom.4c0042310.1021/acsaom.4c00423","DOIUrl":"https://doi.org/10.1021/acsaom.4c00423https://doi.org/10.1021/acsaom.4c00423","url":null,"abstract":"<p >Rare earth ion-doped luminescent materials exhibit significant potential for application in visible solid-state laser and anticounterfeiting applications. The Czochralski method was employed to successfully synthesize high-quality Dy<sup>3+</sup>, Eu<sup>3+</sup> codoped Gd<sub>3</sub>Sc<sub>2</sub>Al<sub>3</sub>O<sub>12</sub> (GSAG), and Gd<sub>2.79</sub>Y<sub>0.21</sub>Sc<sub>2</sub>Al<sub>3</sub>O<sub>12</sub> (GYSAG) single crystals. Comprehensive studies were conducted on their structural and physicochemical properties, luminescence properties, and fluorescence lifetime. The Dy,Eu:GSAG and Dy,Eu:GYSAG crystals both display favorable thermal conductivity values of 5.56 and 5.43 W m<sup>–1</sup> K<sup>–1</sup>, respectively, along with commendable hardness properties of 7.241 and 7.247 kg/mm<sup>2</sup>. The emission color of the Dy,Eu:G(Y)SAG crystals can be adjusted from white light under a 355 nm excitation to orange-red light under a 405 nm excitation and bright yellow light under a 450 nm excitation. Additionally, the maximum stimulated emission cross-section for both crystals was calculated under various wavelength laser excitations. The fluorescence lifetime of the crystals at the <sup>4</sup>F<sub>9/2</sub> level (Dy<sup>3+</sup>) and the <sup>5</sup>D<sub>0</sub> level (Eu<sup>3+</sup>) was also examined. Notably, the fluorescence quantum efficiencies at the <sup>4</sup>F<sub>9/2</sub> level in Dy,Eu:GSAG and Dy,Eu:GYSAG were measured to be impressive at 91.3 and 92.7%, respectively. The mechanism of resonance energy transfer between Dy<sup>3+</sup> and Eu<sup>3+</sup> was analyzed, indicating promising applications of Dy,Eu:G(Y)SAG in visible solid-state lasers and multimode anticounterfeiting.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"2 12","pages":"2595–2604 2595–2604"},"PeriodicalIF":0.0,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143125580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sourav Sarkar, Subhajit Dutta, Sahil Azam, Debal Kanti Singha, Sudip Kumar Mondal* and Partha Mahata*,
{"title":"Design and Synthesis of a Series of Rare-Earth Coordination Polymer-Based Phosphors: Exploration of the White Light Emission Property","authors":"Sourav Sarkar, Subhajit Dutta, Sahil Azam, Debal Kanti Singha, Sudip Kumar Mondal* and Partha Mahata*, ","doi":"10.1021/acsaom.4c0034410.1021/acsaom.4c00344","DOIUrl":"https://doi.org/10.1021/acsaom.4c00344https://doi.org/10.1021/acsaom.4c00344","url":null,"abstract":"<p >Three sister rare-earth (RE) coordination-based phosphors [RE(3,5-pydc)<sub>1.5</sub>(CO<sub>2</sub>)<sub>0.5</sub>(H<sub>2</sub>O)<sub>4</sub>]·2H<sub>2</sub>O·CH<sub>3</sub>OH (RE = Y, Eu, and Tb and pydc = 3,5-pyridine dicarboxylate) (compounds <b>1</b>, <b>2,</b> and <b>3</b>) have been prepared at room temperature using the slow diffusion method. Also, we have synthesized a series of tri-RE metal-based phosphor materials (compounds <b>4</b> to <b>14</b>) by varying the relative concentrations of Y, Tb, and Eu metal salts. X-ray diffraction studies on single crystals of <b>1</b>, <b>2,</b> and <b>3</b> confirmed that these coordination polymers are isostructural with a one-dimensional skeleton. The RE metal ions adopted distorted tricapped trigonal prismatic geometries in this series of compounds. The presence of zwitterionic carbamates in one of the pyridine nitrogen sites was observed through the combination of atmospheric CO<sub>2</sub>. All three compounds have been characterized by thermogravimetric analysis, and infrared spectra and phase purity of the compounds have been validated through PXRD studies. The trimetal-based material (compound <b>14</b>) Y<sub>0.5</sub>Eu<sub>0.25</sub>Tb<sub>0.25</sub> was found to be appropriate for showing white light emission in the solid state at 325 nm excitation and through CIE coordinates (0.329, 0.333) and a low correlated color temperature of 5658 K. A multicolor emission mechanism at different excitation wavelengths has been discussed in detail. The key factor for the white light emission was found to be the presence of three color emission centers with an optimum intensity ratio at a particular excitation wavelength.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"2 12","pages":"2509–2518 2509–2518"},"PeriodicalIF":0.0,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143127004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Equatorial–Axial Conformational Dynamics Enabling Thermoresponsive SHG Switch in a Homochiral Hybrid Compound","authors":"Ming-Yu Guo, Mao-Fan Li, Xiao-Xian Chen, Wei-Jian Xu* and Wei-Xiong Zhang*, ","doi":"10.1021/acsaom.4c0043110.1021/acsaom.4c00431","DOIUrl":"https://doi.org/10.1021/acsaom.4c00431https://doi.org/10.1021/acsaom.4c00431","url":null,"abstract":"<p >Switchable second-harmonic-generation (SHG) materials are promising for sensing, imaging, and signal modulation applications. In this work, we designed and synthesized a hybrid salt, (<i>R</i>-3-hydroxypiperidium)<sub>2</sub>[Fe(CN)<sub>5</sub>(NO)] (<b>1</b>), by strategically introducing homochirality to drive a unique equatorial–axial conformation-switch mechanism. At room temperature, <b>1</b> displays a measured direct band gap of 3.07 eV and SHG signals approximately 0.67 times that of the referential KH<sub>2</sub>PO<sub>4</sub> (KDP), with density functional theory (DFT) calculation yielding a <i>d</i><sub>35</sub> coefficient of 0.424 pm/V with a band gap of 2.17 eV. Even more striking is its remarkable SHG switching behavior, exhibiting an on/off contrast of nearly 100 triggered by an iso-space-group phase transition at temperatures up to 372 K. This transition, despite involving a change in the molecular conformation, preserves the overall space-group symmetry due to the chiral nature of the material, thus bypassing the typical symmetry-breaking observed in conventional phase transitions. Such anomalous switching was further elucidated through the supercell model with DFT calculations, allowing in-depth investigations of the underlying order–disorder transitions. The key mechanism of the structural transition is attributed to the reversible switching of hydroxyl groups between equatorial and axial positions, accompanied by distinctive thermal expansions. Additionally, analysis of the first hyperpolarizability of the conformational isomers reveals the molecular-level origins behind the dramatic changes in the SHG behavior. Our findings provide a foundational understanding of the relationship between molecular dynamics and SHG modulation, offering valuable guidelines for designing advanced nonlinear optical materials.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"2 12","pages":"2612–2620 2612–2620"},"PeriodicalIF":0.0,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143126932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Anisotropic Gold Nanorod Arrays for Plasmon-Enhanced Electrochemical Sensing","authors":"Ahmet Uçar, Engin Er and Gokhan Demirel*, ","doi":"10.1021/acsaom.4c0039910.1021/acsaom.4c00399","DOIUrl":"https://doi.org/10.1021/acsaom.4c00399https://doi.org/10.1021/acsaom.4c00399","url":null,"abstract":"<p >Electrochemical (bio)sensors are widely employed as point-of-care devices for the detection of diverse analytes for health and environmental purposes as they can offer high sensitivity, rapid response, and applicability to miniaturization. However, the recorded electrochemical signals usually have a low signal-to-noise ratio, especially when nanoscaled tags are used for labeling in sensor architectures. This increases the effects of interference, which would eventually lead to poorer reproducibility and limited sensor performance. Plasmon-enhanced electrochemistry (PEEC) is a recently growing field, which is based on the relationship between plasmonic nanostructures and their electrocatalytic function under the localized surface plasmon resonance (LSPR) region for analytical-based applications. The integration of plasmonic nanostructured materials with electrochemical sensor platforms can exhibit enhanced catalytic activity and sensitivity when surface plasmons are created under light irradiation. Herein, we demonstrate the first-time use of anisotropic gold nanorod arrays (AuNRs) as the source of plasmonic enhancement in the electrochemical detection of doxorubicin (DOX), a chemotherapeutic agent. To achieve this, AuNRs were deposited onto carbon screen-printed electrodes (cSPEs) at a deposition angle of 10° by the oblique angle deposition (OAD) technique. Based on the excitation of the surface using an 808 nm near-infrared (NIR) laser, the plasmon-based catalytic enhancement on the electrochemical response of AuNRs-deposited cSPEs was investigated using a redox mediator in comparison to bare cSPEs. The effect of laser excitation time (0–120 s) and power (0.2–1.8 W) on PEEC was optimized to clarify the plasmonic effect. Utilizing the oriented surface alignment of nanorods, the effect of isotropy was also investigated by directional laser excitation and found to be an effective parameter due to possible plasmon trapping effects. This plasmon-induced electrocatalytic enhancement enabled increased sensitivity for DOX detection, which shows its applicability as a proof-of-concept design in practical real-world sensor applications.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"2 12","pages":"2551–2558 2551–2558"},"PeriodicalIF":0.0,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143127524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Temperature-Dependent Broadband Terahertz Behavior of Metal-Free Multiwalled Carbon Nanotubes","authors":"Mangababu Akkanaboina, Nityananda Acharyya, Shreeya Rane, Gopal Kulkarni, Shyamal Mondal, Saloni Sharma, Shubhda Srivastava, Bipin Kumar Gupta and Dibakar Roy Chowdhury*, ","doi":"10.1021/acsaom.4c0037210.1021/acsaom.4c00372","DOIUrl":"https://doi.org/10.1021/acsaom.4c00372https://doi.org/10.1021/acsaom.4c00372","url":null,"abstract":"<p >This study focuses on the temperature-dependent terahertz (THz) response of a metal-catalyst-free multiwalled carbon nanotubes (MWCNTs) film. The presence of metal catalyst particles challenges the understanding of pure response of the MWCNTs; hence, a distinct method is adopted for the development of pure MWCNTs excluding metal catalyst particles. Utilizing the MWCNTs obtained by this method, a film of ∼40 μm thickness is drop-casted on a high-resistance Si substrate. With the help of terahertz time domain spectroscopy (THz-TDS), the MWCNTs films are characterized for the broadband frequency range (0.2–1 THz) with temperature variation from 24 to 123 °C. Our experiments reveal that an increase in the sample temperature leads to a decrease in THz transmissions due to enhanced THz conductivity. Further, decreasing temperature brings back its response in the reverse manner; however, the two paths are slightly deviated from each other, inducing a temperature-induced hysteresis effect. We attribute this to the temperature-dependent THz response of MWCNTs to π-electron transitions and the existence of defect states. Moreover, the establishment of scattering junctions at high temperature is dedicated to the observed hysteresis effect. Our study also reveals the applicability of these MWCNTs films as THz broadband absorbers, low pass filters, and modulators. Hence, this study can be very useful in incorporating low-dimensional materials in order to realize THz quantum devices.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"2 12","pages":"2519–2527 2519–2527"},"PeriodicalIF":0.0,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143127523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Enhanced Circularly Polarized Luminescence Induced by Efficient Stacking of Axial Chiral Molecules in Liquid Crystal Polymer Films","authors":"Lianjie Chen, Xiaojie He, Jianan Yuan*, Xuemin Lu* and Qinghua Lu*, ","doi":"10.1021/acsaom.4c0041610.1021/acsaom.4c00416","DOIUrl":"https://doi.org/10.1021/acsaom.4c00416https://doi.org/10.1021/acsaom.4c00416","url":null,"abstract":"<p >Endowing liquid crystal polymers with chirality and luminescence is a powerful strategy to address the low luminescence asymmetry factor (<i>g</i><sub>lum</sub>) of organic circularly polarized luminescence (CPL) films. However, the mechanism of chiral transfer and amplification in the multicomponent stacking mode of polymers, exogenous chiral molecules, and fluorescent dyes remains a challenge. Here, CPL films with high <i>g</i><sub>lum</sub> values were obtained by controlling the stacking modes of the three components. Employing axial chiral 1,1′-bi-2-naphthol as a dopant allowed for more efficient chiral induction due to its favorable H-aggregation self-assembly and additional π–π interactions with achiral components, resulting in CPL films with a considerable <i>g</i><sub>lum</sub> value of 0.57. This work provides insights into understanding chiral transfer and amplification in multicomponent stacking modes and offers a flexible approach to the design of advanced CPL materials.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"2 12","pages":"2575–2584 2575–2584"},"PeriodicalIF":0.0,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143127633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Liansheng Wang, Zhengping Zhang, Haoyang Shi, Xueyong Ding, Yuan Wang, Xiong Wang and Weiren Zhu*,
{"title":"Optically Transparent Flexible Metamaterial for Ultrabroadband Millimeter-Wave Absorption","authors":"Liansheng Wang, Zhengping Zhang, Haoyang Shi, Xueyong Ding, Yuan Wang, Xiong Wang and Weiren Zhu*, ","doi":"10.1021/acsaom.4c0041010.1021/acsaom.4c00410","DOIUrl":"https://doi.org/10.1021/acsaom.4c00410https://doi.org/10.1021/acsaom.4c00410","url":null,"abstract":"<p >In this paper, we introduce an innovative metamaterial constructed from indium tin oxide sheets, designed for the purpose of ultrabroadband absorption of millimeter waves with the property of being optically transparent and flexible. Moreover, the absorber also demonstrates exceptional conformal RCS reduction within the frequency range of 34–52.5 GHz, which can potentially enhance the stealth performance of structures to some degree. The proposed absorber stands out due to its unparalleled ultrawideband absorption capabilities, coupled with optical transparency and a flexible structure. These attributes render it an exceptionally promising solution for applications in the realms of millimeter-wave stealth technology and electromagnetic compatibility in the fields of mobile communication, vehicular networks, and the Internet of Things.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"2 12","pages":"2568–2574 2568–2574"},"PeriodicalIF":0.0,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143127696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Blue Upconversion Emission of Nd3+/Tm3+/Yb3+ Triply Doped Aluminophosphate Optical Fibers","authors":"Renato Grigolon Capelo*, Clément Strutynski, Gregory Gadret, Frédéric Désévédavy, Frédéric Smektala and Danilo Manzani*, ","doi":"10.1021/acsaom.4c0034810.1021/acsaom.4c00348","DOIUrl":"https://doi.org/10.1021/acsaom.4c00348https://doi.org/10.1021/acsaom.4c00348","url":null,"abstract":"<p >Glasses containing rare-earth ions (RE<sup>3+</sup>) for upconversion (UC) luminescence have been widely explored in several photonic applications. Materials containing Tm<sup>3+</sup> present an intense blue emission when excited in the near-infrared range, allowing them to be used as solid-state lasers and other emitter devices. Tm<sup>3+</sup> are generally combined with other RE<sup>3+</sup> to improve the UC efficiency; however, increasing the number of dopants can be an issue for their solubility in the glass matrix and for fiber drawing. In this work, alkali–aluminum–phosphate glasses, a host matrix with high RE<sup>3+</sup> solubility and fiber-drawing ability, were produced containing different amounts of Tm<sup>3+</sup>, Nd<sup>3+</sup>, and Yb<sup>3+</sup>, as well as the respective tridoped optical fibers. Glass samples containing RE<sup>3+</sup> were excited at 808 and 980 nm to evaluate the mechanism involved in the luminescence process. In addition, triply doped optical fibers were excited at 788 and 980 nm, and a bright blue luminescence was observed at both wavelengths. Thus, due to the intense UC emission measured on RE<sup>3+</sup> triply doped optical fibers with low optical loss, the developed material presents great potential for fiber-based photonic applications.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"2 12","pages":"2501–2508 2501–2508"},"PeriodicalIF":0.0,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsaom.4c00348","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143127695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}