Journal of Luminescence最新文献_第8页

Single band ratiometric thermometry of K2BaCa(PO4)2:Mn5+ phosphor with near infrared excitation and emission 近红外激发和发射K2BaCa(PO4)2:Mn5+荧光粉的单波段比例测温

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-20 DOI: 10.1016/j.jlumin.2025.121261

Guanghui Li , Shuchen Liu , Xiang Liu, Linwei Zhang, Yi Zhang, Hua Zou, Hongyu Lu, Jianhua Zhang

{"title":"Single band ratiometric thermometry of K2BaCa(PO4)2:Mn5+ phosphor with near infrared excitation and emission","authors":"Guanghui Li , Shuchen Liu , Xiang Liu, Linwei Zhang, Yi Zhang, Hua Zou, Hongyu Lu, Jianhua Zhang","doi":"10.1016/j.jlumin.2025.121261","DOIUrl":"10.1016/j.jlumin.2025.121261","url":null,"abstract":"<div><div>Transition metal as an activator is susceptible to influences of external environment, which make it sensitive to temperature and enable it to be used as a thermometer. However, its excitation spectra could hardly extend to near-infrared (NIR) region, which restricts its application in the field of biology. Additionally, ratiometric thermometry based on dual luminescent bands suffers from a low reliability due to the impacts of optical dispersion. To overcome the above challenges, single band ratiometric thermometry is adopted, which can render the thermometer immune to optical dispersion, resulting in a high reliability. Meanwhile, Mn<sup>5+</sup> activated K<sub>2</sub>BaCa(PO<sub>4</sub>)<sub>2</sub> (KBCP) phosphor is successfully synthesized, whose excitation and emission are in the NIR region. The influence of the excitation light fluctuations can be excluded by monitoring and screening the excitation intensity. Under 970 and 806 nm excitation, its temperature sensing behaviors are investigated in the range of 300–480 K. The maximum relative sensitivity is 1.69 % K<sup>−1</sup> at 413 K under 806 nm excitation. These results indicate that KBCP:Mn<sup>5+</sup> phosphor is an excellent NIR thermometer and can achieve highly reliable measurement.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"283 ","pages":"Article 121261"},"PeriodicalIF":3.3,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143854672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Luminophore self-quenching and microenvironment heterogeneity in polymer–ceramic pressure-sensitive paints 聚合物陶瓷压敏涂料中的发光团自猝灭和微环境非均质性

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-19 DOI: 10.1016/j.jlumin.2025.121260

Feng Gu, Zhaomin Cao, Yingzheng Liu, Di Peng

{"title":"Luminophore self-quenching and microenvironment heterogeneity in polymer–ceramic pressure-sensitive paints","authors":"Feng Gu, Zhaomin Cao, Yingzheng Liu, Di Peng","doi":"10.1016/j.jlumin.2025.121260","DOIUrl":"10.1016/j.jlumin.2025.121260","url":null,"abstract":"<div><div>Polymer–ceramic pressure-sensitive paints (PC-PSPs) enable time-resolved pressure-field measurements with high spatial resolution. Their porous binder, formed by a large proportion of ceramic particles and a small amount of polymer, facilitates oxygen diffusion, ensuring a rapid response. However, the low polymer concentration in PC-PSPs leads to severe dynamic self-quenching of luminescence, which is further complicated by the microenvironment heterogeneity induced by the high concentration of ceramic particles. While these factors significantly deteriorate the static sensing performance of PC-PSPs, the underlying mechanisms remain poorly understood. To address this gap, this paper introduces a photophysical model for the quenching mechanism in PC-PSPs, considering the dynamic self-quenching effect and microenvironment heterogeneity. The proposed model is verified based on experimental results of PC-PSPs with varying polymer-to-ceramic particle ratios. The effects of dynamic self-quenching and microenvironment heterogeneity on pressure sensitivity, response time, and photodegradation are analyzed based on theoretical analysis and experimental results. The findings can provide valuable reference for the design and optimization of PC-PSPs.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"283 ","pages":"Article 121260"},"PeriodicalIF":3.3,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143851958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photoluminescence and structural characterization of MgAl2O4 irradiated with swift Bi ions 快速铋离子辐照MgAl2O4的光致发光及结构表征

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-18 DOI: 10.1016/j.jlumin.2025.121259

V. Skuratov , O. Korolik , M. Mamatova , J. O’Connell , N. Kirilkin , A. Dauletbekova , A. Akilbekov

{"title":"Photoluminescence and structural characterization of MgAl2O4 irradiated with swift Bi ions","authors":"V. Skuratov , O. Korolik , M. Mamatova , J. O’Connell , N. Kirilkin , A. Dauletbekova , A. Akilbekov","doi":"10.1016/j.jlumin.2025.121259","DOIUrl":"10.1016/j.jlumin.2025.121259","url":null,"abstract":"<div><div>The optically stimulated luminescence in MgAl<sub>2</sub>O<sub>4</sub> single crystals associated with defects produced by high energy (670 MeV) Bi ions with electronic stopping power S<sub>e</sub> = 36.6 keV/nm has been studied. Such energy loss is almost five times higher than the threshold for latent track formation in spinel, about 7.5 keV/nm. High resolution transmission electron microscopy (HRTEM) examination has revealed that ion tracks in the sub-surface layer of irradiated specimens retain a crystalline structure. Photoluminescence (PL) spectra from the near surface region were recorded during excitation at 355 nm, 473 nm and 532 nm using a laser confocal microscopy technique. It was found that PL spectra were always composed of broad overlapping bands positioned over the entire spectral range from the excitation wavelengths till 850 nm. It is suggested that such spectral composition might be due to a high concentration of antisite defects with large variation of the Mg/Al ratio in the disordered regions surrounding ion track cores. PL measurements on 23 MeV Ne (S<sub>e</sub> = 3.5 keV/nm) ion irradiated spinel, when no latent tracks are formed, have produced similar spectra as those for Bi ions. This indicates the same nature of defect-related luminescent centers formed at significantly different levels of electronic stopping power – below and above the threshold for latent track formation. The conclusion and findings may provide new insights for interpreting the optical spectra in this material.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"283 ","pages":"Article 121259"},"PeriodicalIF":3.3,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143854670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultra-stable Er3+/Yb3+ Co-doped scheelite single crystals for wide-range fiber-free optical thermometry 超稳定Er3+/Yb3+共掺杂白钨矿单晶用于宽范围无光纤光学测温

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-18 DOI: 10.1016/j.jlumin.2025.121251

Weiqing Wu , Yurong Xu , Xinyi Lin , Fazheng Huang , Ya-Nan Feng , Lizhen Zhang , Yan Yu , Lingyun Li

{"title":"Ultra-stable Er3+/Yb3+ Co-doped scheelite single crystals for wide-range fiber-free optical thermometry","authors":"Weiqing Wu , Yurong Xu , Xinyi Lin , Fazheng Huang , Ya-Nan Feng , Lizhen Zhang , Yan Yu , Lingyun Li","doi":"10.1016/j.jlumin.2025.121251","DOIUrl":"10.1016/j.jlumin.2025.121251","url":null,"abstract":"<div><div>Fluorescence intensity ratio (FIR)-based optical thermometry, recognized for high reliability and rapid response, has emerged as a promising non-contact temperature sensing technology. This study focuses on enhancing the performance of Er<sup>3+</sup>/Yb<sup>3+</sup> co-doped scheelite-type single crystals (NaY(WO<sub>4</sub>)<sub>2</sub> and NaGd(WO<sub>4</sub>)<sub>2</sub>) for wide-range optical temperature sensing. By employing a spontaneous nucleation method, we synthesized single crystals with optimized doping concentrations (1 % Er<sup>3+</sup>/60 % Yb<sup>3+</sup> for NYW and 3 % Er<sup>3+</sup>/70 % Yb<sup>3+</sup> for NGW), achieving intense green upconversion (UC) emissions at 530 nm (<sup>2</sup>H<sub>11/2</sub> → <sup>4</sup>I<sub>15/2</sub>) and 552 nm (<sup>4</sup>S<sub>3/2</sub> → <sup>4</sup>I<sub>15/2</sub>). The single crystals exhibited high Yb<sup>3+</sup>→Er<sup>3+</sup> energy transfer efficiencies of 11.02 % (NYW: 1 % Er<sup>3+</sup>, 60 % Yb<sup>3+</sup>) and 20.65 % (NGW: 3 % Er<sup>3+</sup>, 70 % Yb<sup>3+</sup>), enabling robust UC luminescence even under harsh conditions (pH = 1/13, 72 h) and thermal shocks (800 °C, 8 cycles). Temperature-dependent FIR analysis of thermally coupled energy levels (<sup>2</sup>H<sub>11/2</sub> and <sup>4</sup>S<sub>3/2</sub>) revealed linear ln(FIR) vs. 1/T relationships, with maximum relative sensitivities of 1.18 % K<sup>−1</sup> (NYW) and 1.12 % K<sup>−1</sup> (NGW) in 298–578 K. A prototype sensor utilizing NGW: 3 %Er<sup>3+</sup>, 70 %Yb<sup>3+</sup> single crystal demonstrated practical feasibility across 80–780 K, eliminating fiber-optic requirements due to high UC efficiency. These results highlight scheelite-type single crystals as superior candidates for precision optical thermometry in extreme environments.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"283 ","pages":"Article 121251"},"PeriodicalIF":3.3,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143854671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Amplifying emission strength via incorporating pyrenes in tetraphenylethene-based AIE-luminogens 通过在四苯乙烯基ae -发光剂中加入芘来放大发射强度

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-18 DOI: 10.1016/j.jlumin.2025.121257

Jun-Wei Xu, Yi-Ting Ou, Men-Hsin Hsieh, Tzu-Yun Tseng, Chih-Hsien Chen

{"title":"Amplifying emission strength via incorporating pyrenes in tetraphenylethene-based AIE-luminogens","authors":"Jun-Wei Xu, Yi-Ting Ou, Men-Hsin Hsieh, Tzu-Yun Tseng, Chih-Hsien Chen","doi":"10.1016/j.jlumin.2025.121257","DOIUrl":"10.1016/j.jlumin.2025.121257","url":null,"abstract":"<div><div>A series of chromophores, <strong>PyOMe</strong>, <strong>dPyOMe</strong>, and <strong>dPyAN</strong>, was designed to explore the enhancement of emission properties by incorporating pyrene into tetraphenylethene (TPE)-based aggregation-induced emission (AIE) luminogens. Emission quantum yield (Φ) measurements revealed that in 90 % water fraction H<sub>2</sub>O/THF solutions, <strong>PyOMe</strong> exhibited a Φ of 0.27, whereas <strong>dPyOMe</strong> and <strong>dPyAN</strong> displayed higher values of 0.36 and 0.44, respectively. The introduction of pyrene contributed to enhanced emission intensities by suppressing intramolecular rotations and increasing the radiative transition. Low-temperature studies at 77 K showed significant hypsochromic shifts in emission wavelengths, indicating the difference in molecular interactions between frozen single chromophores and aggregated states. Solid-state fluorescence quantum yields were also evaluated, with <strong>dPyAN</strong> thin film achieving a Φ of 0.48. The findings suggest that pyrene-functionalized TPE-based luminogens have strong potential for use in optoelectronic devices.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"283 ","pages":"Article 121257"},"PeriodicalIF":3.3,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A ratiometric fluorescent probe based on oxabenzofluorene structure for the detection of peroxynitrite in mitochondria 基于氧苯并芴结构的比例荧光探针检测线粒体中过氧亚硝酸盐

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-17 DOI: 10.1016/j.jlumin.2025.121258

Xiao-Lei Xue , Yang Wang , Ying Fang , Kun-Peng Wang , Shaojin Chen , Zhi-Qiang Hu

{"title":"A ratiometric fluorescent probe based on oxabenzofluorene structure for the detection of peroxynitrite in mitochondria","authors":"Xiao-Lei Xue , Yang Wang , Ying Fang , Kun-Peng Wang , Shaojin Chen , Zhi-Qiang Hu","doi":"10.1016/j.jlumin.2025.121258","DOIUrl":"10.1016/j.jlumin.2025.121258","url":null,"abstract":"<div><div>As a potent reactive oxygen species (ROS), peroxynitrite (ONOO<sup>−</sup>) is produced when superoxide anions (O<sub>2</sub><sup>•−</sup>) react with nitric oxide (NO). This molecule has been demonstrated to be closely linked to the progression of numerous diseases. Peroxynitrite is highly reactive and quite unstable with a very short half-life, which is primarily found within mitochondria. Therefore, creating a mitochondria-targeted fluorescent probe that can selectively detect peroxynitrite is of great importance. In this work, a ratiometric fluorescent probe <strong>RHON</strong> is designed to detect ONOO<sup>−</sup> both sensitively and selectively. The probe, featuring an oxabenzofluorene-based structure, was efficiently synthesized in a few short steps. After the addition of ONOO<sup>−</sup>, the pinkish-purple colour of the probe solution gradually disappeared and finally became colourless. Simultaneously, a substantial blue shift was observed in the fluorescence emission, covering a range of 115 nm. After thorough evaluations, the probe was found to have outstanding selectivity and sensitivity toward ONOO<sup>−</sup>. Impressively, it can reach an extremely low detection limit of 0.11 nM, and its response time is quite rapid, approximately 1 min. Furthermore, <strong>RHON</strong> exhibits outstanding biocompatibility. Moreover, the exogenous ONOO<sup>−</sup> present in mitochondria of living cells could be successfully detected by this probe. This successful application vividly demonstrates the great potential of <strong>RHON</strong> in the field of biological applications.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"283 ","pages":"Article 121258"},"PeriodicalIF":3.3,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical path coupling regulation of excitation light and LuAG: Ce phosphor ceramics for high-luminous-efficiency laser lighting 高光效激光照明中激发光与LuAG: Ce荧光陶瓷的光路耦合调节

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-15 DOI: 10.1016/j.jlumin.2025.121256

Yiwei Zhu , Yang Li , Tingting Wang , Zhihao Li , Jian Kang , Le Zhang , Jun Zou

{"title":"Optical path coupling regulation of excitation light and LuAG: Ce phosphor ceramics for high-luminous-efficiency laser lighting","authors":"Yiwei Zhu , Yang Li , Tingting Wang , Zhihao Li , Jian Kang , Le Zhang , Jun Zou","doi":"10.1016/j.jlumin.2025.121256","DOIUrl":"10.1016/j.jlumin.2025.121256","url":null,"abstract":"<div><div>In the preparation processes of laser lighting sources, although optimizing phosphor materials remains the primary strategy to enhance phosphor conversion efficiency, the excitation modes applied to these materials have emerged as an equally effective means. In this study, the luminescence performance of a remote LD-based light source was effectively regulated by controlling the exciting distance and exciting angle between phosphor ceramics and blue LD. Under optimized conditions with an exciting distance of 200 mm and an angle of 60°, a maximum LF of 27,124 lm was achieved, corresponding to a calculated LER of 219.6 lm W<sup>−1</sup>. Oblique incidence excitation of phosphor ceramics was found to exhibit significantly enhanced luminescence performance relative to conventional vertical incidence. The operating temperature of the ceramics decreased gradually with increasing exciting angles, primarily due to decreased power density caused by spot size expansion. These findings reveal that tailoring excitation geometry can effectively balance thermal management and optical efficiency in phosphor ceramics-based remote LD systems, offering critical insights for the design of high-power transmission-type packaging devices.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"283 ","pages":"Article 121256"},"PeriodicalIF":3.3,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143864254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tailoring photophysical properties of low-dimensional CsPbBr3 nanocrystals via solvothermal morphology control 通过溶剂热形态控制调整低维CsPbBr3纳米晶体的光物理性质

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-15 DOI: 10.1016/j.jlumin.2025.121254

Yu Li , Shaoru Shuang , Xiaomeng Jiao , Chao Yu , Chengchun Tang , Jing Lin , Yang Huang

{"title":"Tailoring photophysical properties of low-dimensional CsPbBr3 nanocrystals via solvothermal morphology control","authors":"Yu Li , Shaoru Shuang , Xiaomeng Jiao , Chao Yu , Chengchun Tang , Jing Lin , Yang Huang","doi":"10.1016/j.jlumin.2025.121254","DOIUrl":"10.1016/j.jlumin.2025.121254","url":null,"abstract":"<div><div>All-inorganic CsPbX<sub>3</sub> (X = Cl, Br, I) perovskite nanocrystals with low-dimensional morphologies exhibit unique photophysical properties due to quantum confinement effects. However, systematic studies correlating their structure with photophysical performance have been hindered by the lack of effective synthesis strategy for controllably tailoring their morphologies. Herein, we address this challenge using a simple solvothermal method to synthesize CsPbBr<sub>3</sub> nanowires and nanoplates with controlled size and morphology by solely varying reaction time (30 min–24 h). Prolonged reaction time induces a size-dependent morphological transition from nanowires (∼2 nm diameter) to nanoplates (∼2–3 nm thickness), accompanied by a quantum confinement-mediated redshift in photoluminescence (PL) spectra. Fluorescence lifetime measurements and Urbach energy analysis reveal a reduction in defects within nanoplates compared to nanowires, effectively suppressing non-radiative recombination pathways. Temperature-dependent PL studies further demonstrate that CsPbBr<sub>3</sub> nanoplates exhibit a higher exciton binding energy (320.78 meV), indicating enhanced electron-hole interactions. These findings not only achieve precise morphology modulation but also establish a fundamental structure-property relationship, highlighting the critical role of defect engineering and quantum confinement in tailoring the photophysical performance of low-dimensional perovskite nanocrystals. This work provides a strategic framework for designing high-performance perovskite nanomaterials for advanced optoelectronic applications.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"282 ","pages":"Article 121254"},"PeriodicalIF":3.3,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143833458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Instantaneous luminescence of NV− center in diamond pumped by a femtosecond laser pulse 飞秒激光脉冲泵浦金刚石中NV -中心的瞬时发光

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-14 DOI: 10.1016/j.jlumin.2025.121248

Alexander Savvin , Evgeny Andrianov , Evgenii Tereshchenkov , Vladislav Shishkov , Elizaveta Zaloznaya , Vladimir Mitrokhin , Andrei Fedotov , Viktor Vins , Alexander Dormidonov

{"title":"Instantaneous luminescence of NV− center in diamond pumped by a femtosecond laser pulse","authors":"Alexander Savvin , Evgeny Andrianov , Evgenii Tereshchenkov , Vladislav Shishkov , Elizaveta Zaloznaya , Vladimir Mitrokhin , Andrei Fedotov , Viktor Vins , Alexander Dormidonov","doi":"10.1016/j.jlumin.2025.121248","DOIUrl":"10.1016/j.jlumin.2025.121248","url":null,"abstract":"<div><div>The process of luminescence excitation of negatively charged NV centers in diamond is investigated by the up-conversion method with a femtosecond resolution. Our experimental technique allowed us to register that NV<sup>−</sup> center luminescence starts in the whole 600–800 nm spectral range in a time not exceeding 30 fs after excitation by the second harmonic of the femtosecond ytterbium laser. We have established that there is no time-dependent Stokes shift in the luminescence spectrum of the NV<sup>−</sup> center, which could be caused by relaxation of coherent phonon excitation. A theoretical model of NV<sup>−</sup> center describes the dynamics of the luminescence spectrum due to non-resonant Rabi oscillations of color center polarization and provides a quantitative agreement with experimental data. Thus, NV<sup>−</sup> center is a promising source of quantum light with ultrafast formation of luminescence.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"282 ","pages":"Article 121248"},"PeriodicalIF":3.3,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143833459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of Pr-doped Ca3TaGa3Si2O14 crystal scintillator emitting near infrared light 发射近红外光的掺pr Ca3TaGa3Si2O14晶体闪烁体研究

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-14 DOI: 10.1016/j.jlumin.2025.121255

Ryosei Takahashi, Kai Okazaki, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida

引用次数: 0