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学者姓名：翟天瑞
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Abstract ：
Linearly polarized organic light-emitting diodes have become appealing functional expansions of polarization optics and optoelectronic applications. However, the current linearly polarized diodes exhibit low polarization performance, cost-prohibitive process, and monochromatic modulation limit. Herein, we develop a switchable dual-color orthogonal linear polarization mode in organic light-emitting diode, based on a dielectric/metal nanograting-waveguide hybrid-microcavity using cost-efficient laser interference lithography and vacuum thermal evaporation. This acquired diode presents a transverse-electric/transverse-magnetic polarization extinction ratio of 15.8 dB with a divergence angle of +/- 30 degrees, an external quantum efficiency of 2.25%, and orthogonal polarized colors from green to sky-blue. This rasterization of dielectric/metal-cathode further satisfies momentum matching between waveguide and air mode, diffracting both the targeted sky-blue transverse-electric mode and the off-confined green transverse-magnetic mode. Therefore, a polarization-encrypted colorful optical image is proposed, representing a significant step toward the low-cost high-performance linearly polarized light-emitting diodes and electrically-inspired polarization encryption for color images. The authors present a switchable dual colour orthogonal linear polarized OLED by internally integrating a nanograting for selective diffraction of optical modes, which is appealing for applications including polarisation-encrypted colourful optical images and autostereoscopic naked-eye 3D displays.
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| GB/T 7714 | Chen, Ruixiang , Liang, Ningning , Zhai, Tianrui . Dual-color emissive OLED with orthogonal polarization modes [J]. | NATURE COMMUNICATIONS , 2024 , 15 (1) . |
| MLA | Chen, Ruixiang 等. "Dual-color emissive OLED with orthogonal polarization modes" . | NATURE COMMUNICATIONS 15 . 1 (2024) . |
| APA | Chen, Ruixiang , Liang, Ningning , Zhai, Tianrui . Dual-color emissive OLED with orthogonal polarization modes . | NATURE COMMUNICATIONS , 2024 , 15 (1) . |
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Abstract ：
Random lasers owing the functionality of generating random spectra facilitate the chaotic encrypted systems essential for cryptography in the current information epoch. Nevertheless, single wavelength bands of random lasers provide an unsuitable key for image encryption that causes outline interpretation and a fragile complex dual chaotic encryption demanding secured image encryption. This research presents an inevitable development of a reversible switchable wavelength fiber random laser composed of the mixture of highly polarized intramolecular charge transfer dye molecules and the optimum concentration of titanium dioxide acting as gain and efficient scattering mediums respectively within a polyvinyl alcohol matrix. This mixture with a certain ratio is coated on a fiber employing a dip coated method, followed by a layer of polydimethylsiloxane to facilitate with high coefficient of thermal expansion. Random laser emission is enabled with dynamically switchable wavelengths obeying the excited state intramolecular proton transfer phenomenon under the photo-isomerization. The optimum scatters concentration yields a lower threshold of 32 mu J/cm2 2 with full width at half maximum of 0.4 nm and dual emission reversible switchable wavelength bands centered around 443 nm and 464 nm attributed to inter charge transfer feature of the dye molecules. Thereby, the dual reversible switchable wavelength bands feed as input for a dual chaotic color image encryption system. Further, in this integrated system, beam divergence of random laser emissions remains less than 20 degrees during both situations of with- and without irradiation. This delicate approach paves the way in laying the foundation about the applicability of fiber random lasers in an information security system. (c) 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
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| GB/T 7714 | Aziz, Gohar , Xu, Zhiyang , Yan, Jiuhu et al. Photo-isomerization enabled reversible wavelength switching in fiber random laser for color image encryption [J]. | OPTICS EXPRESS , 2024 , 32 (17) : 30380-30392 . |
| MLA | Aziz, Gohar et al. "Photo-isomerization enabled reversible wavelength switching in fiber random laser for color image encryption" . | OPTICS EXPRESS 32 . 17 (2024) : 30380-30392 . |
| APA | Aziz, Gohar , Xu, Zhiyang , Yan, Jiuhu , Shen, Kaiyue , Khan, Muhammad Ali , Hayat, Anwer et al. Photo-isomerization enabled reversible wavelength switching in fiber random laser for color image encryption . | OPTICS EXPRESS , 2024 , 32 (17) , 30380-30392 . |
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Abstract ：
The second-order nonlinear-polarization originated from the interaction between thin-film materials with second-order nonlinear susceptibility (chi((2))) and high-power laser is essential for integrated optics and photonics. In this work, strong second-order nonlinear-polarization was found in a-axis oriented Zn1-xMgxO (ZnMgO) epitaxial thin-films with Li incorporation, which were deposited by radio-frequency magnetron sputtering. Mg incorporation (x > 0.3) causes a sharp fall in the matrix element chi(33) of chi((2)) tensor, although it widens optical bandgap (E-opt). In contrast, moderate Li incorporation significantly improves chi(33) and resistance to high-power laser pulses with a little influence on E-opt. In particular, a Zn0.67Mg0.33O:Li [Li/(Zn + Mg + Li) = 0.07] thin-film shows a |chi(33)| of 36.1 pm V-1 under a peak power density (E-p) of 81.2 GW cm(-2), a resistance to laser pulses with E-p of up to 124.9 GW cm(-2), and an E-opt of 3.95 eV. Compared to that of ZnO, these parameters increase by 37.8%, 53.4%, and 18.6%, respectively. Specially, the Zn0.67Mg0.33O:Li shows higher radiation resistance than a Mg-doped LiNbO3 crystal with a comparable E-opt. First-principle calculations reveal the Li occupation at octahedral interstitial sites of wurtzite ZnO enhances radiation resistance by improving structural stability. X-ray photoelectron spectroscopy characterizations suggest moderate Li incorporation increases chi(33) via enhancing electronic polarization. These findings uncover the close relationship between the octahedra interstitial defects in wurtzite ZnMgO and its nonlinear-polarization behavior under the optical frequency electric field of high-power laser.
Keyword ：
high-power laser high-power laser Li incorporation Li incorporation second-order nonlinear susceptibility second-order nonlinear susceptibility ZnMgO thin-films ZnMgO thin-films interstitial defects interstitial defects resistance resistance
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| GB/T 7714 | Meng, Lei , Chai, Hongyu , Gao, Junjie et al. Strong nonlinear-polarization in ZnMgO epitaxial thin-films with Li incorporation [J]. | JOURNAL OF PHYSICS D-APPLIED PHYSICS , 2024 , 57 (27) . |
| MLA | Meng, Lei et al. "Strong nonlinear-polarization in ZnMgO epitaxial thin-films with Li incorporation" . | JOURNAL OF PHYSICS D-APPLIED PHYSICS 57 . 27 (2024) . |
| APA | Meng, Lei , Chai, Hongyu , Gao, Junjie , Lv, Zunren , Yang, Xiaoguang , Liu, Wenkai et al. Strong nonlinear-polarization in ZnMgO epitaxial thin-films with Li incorporation . | JOURNAL OF PHYSICS D-APPLIED PHYSICS , 2024 , 57 (27) . |
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Abstract ：
本发明属于激光器技术领域，公开了一种回音壁‑随机混合激光器用复合纤维的制备方法及回音壁‑随机混合激光器，所述复合纤维的制备方法包括如下步骤：(1)将激光增益介质溶解于二氯甲烷中形成溶液；(2)向所述溶液中加入聚合物材料和金属纳米颗粒，形成混合溶液；(3)采用所述混合溶液进行静电纺丝，得到回音壁‑随机混合激光器用复合纤维。本发明中，所得复合纤维构成回音壁激光谐振腔，并在侧壁界面附近形成回音壁激光场，而复合纤维内部区域分散有金属纳米颗粒可形成随机激光谐振腔，用于激光器中，可通过不同功率的泵浦光激发输出不同种类的激光，且回音壁激光的能量可向随机激光转移，具有降低随机激光激发阈值的效果。
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| GB/T 7714 | 翟天瑞 , 严久虎 , 梁宁宁 . 一种回音壁-随机混合激光器用复合纤维的制备方法及回音壁-随机混合激光器 : CN202310127241.1[P]. | 2023-02-17 . |
| MLA | 翟天瑞 et al. "一种回音壁-随机混合激光器用复合纤维的制备方法及回音壁-随机混合激光器" : CN202310127241.1. | 2023-02-17 . |
| APA | 翟天瑞 , 严久虎 , 梁宁宁 . 一种回音壁-随机混合激光器用复合纤维的制备方法及回音壁-随机混合激光器 : CN202310127241.1. | 2023-02-17 . |
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Abstract ：
In situ self-assembly of semiconducting emitters into multilayer cracks is a significant solution-processing method to fabricate organic high -Q lasers. However, it is still difficult to realize from conventional conjugated polymers. Herein, we create the molecular super-hindrance-etching technology, based on the pi-functional nanopolymer PG-Cz, to modulate multilayer cracks applied in organic single-component random lasers. Massive interface cracks are formed by promoting interchain disentanglement with the super-steric hindrance effect of pi-interrupted main chains, and multilayer morphologies with photonic-crystal-like ordering are also generated simultaneously during the drop-casting method. Meanwhile, the enhancement of quantum yields on micrometer-thick films (Phi = 40% to 50%) ensures high-efficient and ultrastable deep-blue emission. Furthermore, a deep-blue random lasing is achieved with narrow linewidths similar to 0.08 nm and high-quality factors Q approximate to 5,500 to 6,200. These findings will offer promising pathways of organic pi-nanopolymers for the simplification of solution processes applied in lasing devices and wearable photonics.
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| GB/T 7714 | Lin, Dongqing , Li, Yang , Zhang, He et al. In Situ Super-Hindrance-Triggered Multilayer Cracks for Random Lasing in pi-Functional Nanopolymer Films [J]. | RESEARCH , 2023 , 6 . |
| MLA | Lin, Dongqing et al. "In Situ Super-Hindrance-Triggered Multilayer Cracks for Random Lasing in pi-Functional Nanopolymer Films" . | RESEARCH 6 (2023) . |
| APA | Lin, Dongqing , Li, Yang , Zhang, He , Zhang, Shuai , Gao, Yuezheng , Zhai, Tianrui et al. In Situ Super-Hindrance-Triggered Multilayer Cracks for Random Lasing in pi-Functional Nanopolymer Films . | RESEARCH , 2023 , 6 . |
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Abstract ：
Combining phase-transition materials with optical micro -cavities may advance the applications of whispering-gallery mode (WGM) lasing in performance customization, sens-ing, and optical switching. In this study, switchable WGM lasing based on phase transition is reported. The device is designed by introducing the phase-transition hydrogel into the capillary microcavity. After approaching the phase -transition point in hydrogel, the number of WGM lasing modes decreases sharply with a significant blueshift in the wavelength. The phenomenon is caused by the increase in light scattering and decrease in effective refractive index of the device. Furthermore, single-mode lasing is obtained by manipulating the phase transition, which exhibits superior reversibility. This study may pave the way for designing and multifunctioning of novel WGM lasing in photonic devices.(c) 2023 Optica Publishing Group
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| GB/T 7714 | Tong, Junhua , Ge, Kun , Xu, Zhiyang et al. Switchable whispering gallery mode lasing via phase transition [J]. | OPTICS LETTERS , 2023 , 48 (19) : 5161-5164 . |
| MLA | Tong, Junhua et al. "Switchable whispering gallery mode lasing via phase transition" . | OPTICS LETTERS 48 . 19 (2023) : 5161-5164 . |
| APA | Tong, Junhua , Ge, Kun , Xu, Zhiyang , Zhai, Tianrui . Switchable whispering gallery mode lasing via phase transition . | OPTICS LETTERS , 2023 , 48 (19) , 5161-5164 . |
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Abstract ：
Introducing phase transition materials to random systems provides a promising route to create new optoelectronic functionalities of random lasers. Here, a phase transition random laser with switchable lasing modes is reported, which is designed with a thermoresponsive hydrogel as scattering medium. By manipulating the phase transition in hydrogel, random lasing modes can be switched reversibility between incoherent and coherent random lasing. The phenomenon derives from the changing of light scattering properties in different phase states, thus affecting the optical feedback path of random lasing. Besides, based on its controllable and easily detectable time-domain characteristics, the phase transition random laser is applied in information encoding and transmission. It is the first time that the transition from coherent to incoherent random lasing is observed by varying the sample phase states. This work will inspire the design and application of novel random lasers in photoelectric device. (c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
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| GB/T 7714 | Tong, Junhua , Ruan, Jun , Iqbal, Naeem et al. Tunable random lasers via phase transition for information encryption [J]. | OPTICS EXPRESS , 2023 , 31 (19) : 31661-31669 . |
| MLA | Tong, Junhua et al. "Tunable random lasers via phase transition for information encryption" . | OPTICS EXPRESS 31 . 19 (2023) : 31661-31669 . |
| APA | Tong, Junhua , Ruan, Jun , Iqbal, Naeem , Ma, He , Ge, Kun , Lin, Chengyou et al. Tunable random lasers via phase transition for information encryption . | OPTICS EXPRESS , 2023 , 31 (19) , 31661-31669 . |
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Abstract ：
本发明公开了一种非对称金属‑介质‑金属透、反射结构滤色器的制备方法及其应用，该滤色器包括不对称金属反射镜和中间介质层：所述的不对称金属反射镜由两层厚度不同的金属层构成；所述的不同厚度的中间介质层采用真空热蒸镀的办法制备在两个金属反射镜中间。当白光入射该滤色器时，具有不同厚度中间介质层的滤色器将产生丰富的透射和反射颜色。本发明制备方法简单，易于集成，透射、反射色彩可调谐并且具有优异的紫外线防护和隔热性。
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| GB/T 7714 | 梁宁宁 , 田瑞琪 , 翟天瑞 . 一种非对称金属-介质-金属透、反射结构滤色器的制备方法及其应用 : CN202310415866.8[P]. | 2023-04-19 . |
| MLA | 梁宁宁 et al. "一种非对称金属-介质-金属透、反射结构滤色器的制备方法及其应用" : CN202310415866.8. | 2023-04-19 . |
| APA | 梁宁宁 , 田瑞琪 , 翟天瑞 . 一种非对称金属-介质-金属透、反射结构滤色器的制备方法及其应用 : CN202310415866.8. | 2023-04-19 . |
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Abstract ：
Precise light manipulation is of paramount importance in improving the performance of semi-transparent organic photovoltaics (STOPVs) for their orientation toward building-integrated photovoltaic window. Nevertheless, one critically important issue for the integration of optical modulation with STOPV devices, lies in the damage from the harsh direct deposition steps to the intrinsic properties and long-term durability of STOPVs. Here a transferprinting (TP) approach, in which photonic crystals (PC) films are deposited onto a self-adhesive and flexible matrix for their integration with STOPV devices, was first reported, enabling the resultant TPPC-STOPV devices with superior optical-related multifunction. In contrast to these devices based on direct-evaporated PC film, the non-encapsulated TPPC-STOPVs present an ultraviolet blocking (UVB) as high as 96%, an infrared rejection (IRR) of 92%, an enhanced power conversion efficiency (PCE) by 5% as well as superior long-term durability as 96% of its initial PCE. Their gifted superior UVB and IRR properties are individually on a par with those of the stat-of-the-art commercial optical films for smart solar window. This transfer-printing approach makes it possible to separate the high-energy fabrication of high-quality contacts from target optoelectronic devices, providing a wide range of possibilities for the integration of high-quality contacts with optoelectronic devices, including organic, silicon and perovskite optoelectronic devices, as well as their large-area flexible integration.
Keyword ：
Photonic crystal Photonic crystal Transfer-printing method Transfer-printing method Building-integrated photovoltaic window Building-integrated photovoltaic window Semi -transparent organic photovoltaic Semi -transparent organic photovoltaic
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| GB/T 7714 | Yang, Hua , Liang, Ningning , Wang, Jianqiu et al. Transfer-printing a surface-truncated photonic crystal for multifunction-integrated photovoltaic window [J]. | NANO ENERGY , 2023 , 112 . |
| MLA | Yang, Hua et al. "Transfer-printing a surface-truncated photonic crystal for multifunction-integrated photovoltaic window" . | NANO ENERGY 112 (2023) . |
| APA | Yang, Hua , Liang, Ningning , Wang, Jianqiu , Chen, Ruixiang , Tian, Ruiqi , Xin, Xia et al. Transfer-printing a surface-truncated photonic crystal for multifunction-integrated photovoltaic window . | NANO ENERGY , 2023 , 112 . |
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Abstract ：
Miniaturized lasers with on-demand color emission have immense potential in the development of integrated imaging sources. Random lasers (RLs) with cavity-free structures and low spatial coherence are promising candidates for multicolor imaging sources. However, the wide tuning range and high tuning accuracy of continuous and reversible random lasing color with a defined emissive direction remain challenging. Here, random lasing with on-demand color emission and defined emissive direction is realized in fiber-integrated microbelts through programmable pumping. Individual RL microbelts as RL units doped with blue (B)-, green (G)-, and red (R)-emissive dyes and titanium dioxide nanoparticles are assembled on an optical fiber, resulting in high-performance B/G/R lasing. The optical fiber functions as a waveguide that guides the multicolor RL to ensure a defined directional emission. By manipulating the combination of the B/G/R RL units on the waveguide, distinctive lasing colors covering the entire visible spectrum are obtained, including white-colored random lasing. To realize dynamically controllable lasing for on-demand color emission, a pumping strategy with programmable excitation is proposed by shaping the pump beams into different beam arrays for precisely pumping the RL unit combination. We envision that fiber-integrated RL sources can be implemented in various imaging applications, such as biomedical diagnosis, multiplexed communication, and optical sensing.
Keyword ：
pump control pump control multi-color multi-color directional emission directional emission random laser random laser fiber-integrated fiber-integrated
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| GB/T 7714 | Shi, Xiaoyu , Shen, Kaiyue , Bian, Yaoxing et al. Programmable complex pumping field induced color-on-demand random lasing in fiber-integrated microbelts for speckle free imaging [J]. | SCIENCE CHINA-INFORMATION SCIENCES , 2023 , 66 (12) . |
| MLA | Shi, Xiaoyu et al. "Programmable complex pumping field induced color-on-demand random lasing in fiber-integrated microbelts for speckle free imaging" . | SCIENCE CHINA-INFORMATION SCIENCES 66 . 12 (2023) . |
| APA | Shi, Xiaoyu , Shen, Kaiyue , Bian, Yaoxing , Song, Wanting , Ruan, Jun , Wang, Zhaona et al. Programmable complex pumping field induced color-on-demand random lasing in fiber-integrated microbelts for speckle free imaging . | SCIENCE CHINA-INFORMATION SCIENCES , 2023 , 66 (12) . |
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