Query：
学者姓名：关宝璐
Refining：
Year
Type
Indexed by
Source
Complex
Former Name
Co-Author
Language
Clean All
Abstract ：
Circularly polarized lasers have gained attention for their advantages in 3D laser displays and spatial laser carrier communication. However, generating chiral light are both bulky and lousy, and requires complex manufacturing technology. Therefore, there is a critical need for ultracompact chiral lasers with simple operation, to develop highly integrated and cost-effective optical systems. In this work, circularly polarized VCSEL array was fabricated using the circular dichroism of cholesteric liquid crystal film, coupled with on-chip integration. This approach has improved the uniformity of beam quality and enabled temperature-controlled polarization characteristics. We achieved a laser with a high degree of left-circular polarization (S3 approximate to -0.99, the maxima of |S3| is 1) and an extinction ratio of up to 22. Furthermore, our work extends to arrays comprising 233 photons and larger, paving the way for applications in compact, high-power circularly polarized laser sources.
Keyword ：
Circular polarization Circular polarization VCSEL array VCSEL array Cholesteric liquid crystal Cholesteric liquid crystal Polarization tuning Polarization tuning On-chip integration On-chip integration
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Sun, Wenqing , Wang, Huihui , Li, Xiaosong et al. High uniformity temperature tunable ultra-compact vertical-cavity surface emitting circularly polarized laser array [J]. | OPTICS AND LASER TECHNOLOGY , 2025 , 184 . |
| MLA | Sun, Wenqing et al. "High uniformity temperature tunable ultra-compact vertical-cavity surface emitting circularly polarized laser array" . | OPTICS AND LASER TECHNOLOGY 184 (2025) . |
| APA | Sun, Wenqing , Wang, Huihui , Li, Xiaosong , Hui, Yuanfei , Zhang, Feng , Wang, Meng et al. High uniformity temperature tunable ultra-compact vertical-cavity surface emitting circularly polarized laser array . | OPTICS AND LASER TECHNOLOGY , 2025 , 184 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
Light source with Orbital Angular Momentum lasing is critical in future optical communications and optical manipulation. However, vector vortex beam laser light sources face challenges in miniaturization, untunable, and the complexity of fabrication processes. In this study, an ultra-compact scheme of a tunable vector vortex vertical cavity surface emitting laser is proposed that is tunable in both polarizations and topological charges. Cholesteric liquid crystals and spherulites are integrated into a vertical-cavity surface-emitting laser to generate a vector vortex beam. The cholesteric liquid crystals first load the spin angular momentum, which is then converted into orbital angular momentum by the spherulite, and finally enable the vector vortex beam emission. By introducing molecular motors, the optical vortex topological charge number can be freely switched between -1 and +1 under UV illumination. Based on the fascinating optical activity of liquid crystals, the prepared laser can also be controlled to emit a Hermite-Gaussian mode beam with polarization angles from - 44 degrees to + 44 degrees. This chip-scale tunable vector vortex beam laser can be useful in the field of optical manipulation, quantum encryption, and optical communication fields.
Keyword ：
vertical cavity surface emitting lasers vertical cavity surface emitting lasers vector vortex beams vector vortex beams liquid crystals liquid crystals light modulation light modulation
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Hui, Yuan-Fei , Zhou, Le , Liu, Yuan-Feng et al. Tunable Vector Vortex Beam Vertical Cavity Surface Emitting Laser [J]. | ADVANCED FUNCTIONAL MATERIALS , 2025 . |
| MLA | Hui, Yuan-Fei et al. "Tunable Vector Vortex Beam Vertical Cavity Surface Emitting Laser" . | ADVANCED FUNCTIONAL MATERIALS (2025) . |
| APA | Hui, Yuan-Fei , Zhou, Le , Liu, Yuan-Feng , Luan, Zhao-Yv , Sun, Qian-Hui , Wang, Hui-Hui et al. Tunable Vector Vortex Beam Vertical Cavity Surface Emitting Laser . | ADVANCED FUNCTIONAL MATERIALS , 2025 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
The electron transport layer (ETL)-free perovskite solar cells (PSCs) have gained significant interest by simplifying the manufacture process and reducing the time/energy required for the fabrication of ETLs. Unfortunately, the performance of these ETL-free PSCs still lags behind those of the conventional counterparts due to the slow electron extraction and undesired interfacial charge recombination loss at the buried interface. In this work, a facile and multifunctional biocolina thin layer is incorporated on the bottom electrodes to regulate the interface energy level alignment by forming an interface dipole layer, resulting in a suppressed nonradiative recombination and an improved charge extraction. Furthermore, the biocolina thin layer possess the capability to passivate the surface defects within the perovskite films while simultaneously facilitate the formation of perovskite crystals. Consequently, a remarkable enhancement in photovoltaic performance is observed in the biocolina-based ETL-free PSCs with an increase from 15.96 % to an outstanding 20.01 %. Additionally, the biocolina extends the stability and relieves the hysteresis effect through the interface defect passivation and inhibition of interface charge accumulation. This research contributes to the development of cost-effective, simplified designs for highly efficient ETL-free PSCs by modifying the bottom electrodes. A multifunctional and efficient biocolina thin layer is incorporated on the bottom electrodes to regulate the interface energy level alignment and passivate the surface defects within the perovskite films in the electron transport layer-free perovskite solar cells, achieving a decent efficiency of 20.01 % with an ameliorated J-V hysteresis and environmental stability. image
Keyword ：
band bending band bending work function work function carrier recombination carrier recombination biocolina biocolina Perovskite Perovskite
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Huang, Shuai , Guan, Baolu , Li, Jing . Fabrication of Efficient and Simple-Structured Perovskite Solar Cells Using a Multifunctional Biocolina Surface Treatment [J]. | CHEMSUSCHEM , 2024 , 17 (19) . |
| MLA | Huang, Shuai et al. "Fabrication of Efficient and Simple-Structured Perovskite Solar Cells Using a Multifunctional Biocolina Surface Treatment" . | CHEMSUSCHEM 17 . 19 (2024) . |
| APA | Huang, Shuai , Guan, Baolu , Li, Jing . Fabrication of Efficient and Simple-Structured Perovskite Solar Cells Using a Multifunctional Biocolina Surface Treatment . | CHEMSUSCHEM , 2024 , 17 (19) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
Halide perovskite materials are considered a promising optical gain medium for stimulated emission and have aroused tremendous interest in the field of laser research. The development of low-threshold optically pumped amplified spontaneous emission (ASE) is critical for the advancement of continuous wave (CW) and electrically pumped micro-nano lasers. In this work, an efficient ZnS additive is incorporated into the FA0.85MA0.15PbI2.55Br0.45 perovskite films to diminish the ASE threshold and extend the photostability by the dual-site synergistic passivation. The experimental measurements and first-principles calculations based on the density functional theory (DFT) are employed to elucidate the doping mechanism. The designed ZnS-based perovskite films yield a mitigated ASE threshold of 8.5 mu J cm-2 with an elevated optical gain coefficient of 109.06 cm-1, which outperform those of the control films (12.7 mu J cm-2 and 74.10 cm-1). The in-depth experimental characterizations and theoretical calculations have corroborated that the improvement of ASE performance can be ascribed to the dual-site synergistic passivation effects of Zn2+ and S2-, which reduces the surface defects of perovskite films, suppresses the nonradiative charge recombination and improves the optical stability. This work provides a resultful strategy to construct the solution-processed perovskite lasers with low thresholds and superior stability. Through dual-site synergistic passivation effects, Zn2+ enters the lattice as interstitials, and S2- fills the I/Br vacancies, which synergistically improves the perovskite ASE properties. The doped films show a longer fluorescence lifetime and better stability than the pristine perovskite films. image
Keyword ：
reduced threshold reduced threshold optical gain optical gain ZnS ZnS perovskites perovskites amplified spontaneous emission amplified spontaneous emission
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zhu, Liangliang , Huang, Shuai , Liu, Yue et al. Improved Amplified Spontaneous Emission in Polycrystalline Perovskite Films by the Dual-Site Synergistic Passivation Effects of ZnS [J]. | LASER & PHOTONICS REVIEWS , 2024 , 18 (8) . |
| MLA | Zhu, Liangliang et al. "Improved Amplified Spontaneous Emission in Polycrystalline Perovskite Films by the Dual-Site Synergistic Passivation Effects of ZnS" . | LASER & PHOTONICS REVIEWS 18 . 8 (2024) . |
| APA | Zhu, Liangliang , Huang, Shuai , Liu, Yue , Li, Ruixuan , Zhang, Guangyin , Chen, Yanzhong et al. Improved Amplified Spontaneous Emission in Polycrystalline Perovskite Films by the Dual-Site Synergistic Passivation Effects of ZnS . | LASER & PHOTONICS REVIEWS , 2024 , 18 (8) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
Due to their high level of integration, vertical-cavity surface-emitting lasers (VCSELs) are promising candidates for applications in quantum communication and sub-Doppler atomic microsystems. However, there is an urgent need to develop narrow line width, high-quality VCSELs that provide stable and reliable emission to meet commercial demands. Here, we demonstrate a novel coupled-cavity VCSEL integrated with a cholesteric liquid crystal (CLC) film to develop high-performance ultranarrow line width VCSELs. The CLC film can be flexibly integrated onto the surface of the VCSEL and applies weak light feedback which enhances the coherent superposition and compresses the line width of the VCSEL. It has been shown that when the length of the coupled cavity is less than 150 mu m, it can suppress the higher-order modes and significantly reduce the threshold current of VCSEL. Furthermore, the CLC-VCSEL exhibits circular polarization output and an impressive line width of 2.46 MHz, which is the narrowest micron-scale integration VCSEL as reported, comparable to the line width of distributed Bragg reflection and distributed feedback semiconductor lasers. Compared with recently reported high-performance VCSELs and semiconductor lasers, the CLC-VCSELs achieve a lower threshold current and an enhanced beam quality. This micrometer-scale coupled cavity VCSEL will provide more possibilities for the development of next-generation VCSELs and integrated packages for CLC modulation. Moreover, the CLC optical feedback technique is not exclusive to VCSEL and can also be applied to other optoelectronic devices, such as low-power edge-emitting lasers, quantum dot lasers, and so forth.
Keyword ：
coupled cavity coupled cavity cholestericliquid crystals cholestericliquid crystals narrow line width laser narrow line width laser optical feedback optical feedback VCSEL VCSEL
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Cui, Ning , Zhang, Chen , Wang, Huihui et al. 2.46 MHz Ultranarrow Line Width Vertical-Cavity Surface-Emitting Lasers with Cholesteric Liquid Crystals Coupled Cavity [J]. | ACS PHOTONICS , 2024 . |
| MLA | Cui, Ning et al. "2.46 MHz Ultranarrow Line Width Vertical-Cavity Surface-Emitting Lasers with Cholesteric Liquid Crystals Coupled Cavity" . | ACS PHOTONICS (2024) . |
| APA | Cui, Ning , Zhang, Chen , Wang, Huihui , Fu, Lishan , Zhang, Feng , Liu, Yudong et al. 2.46 MHz Ultranarrow Line Width Vertical-Cavity Surface-Emitting Lasers with Cholesteric Liquid Crystals Coupled Cavity . | ACS PHOTONICS , 2024 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
In electromagnetic spectrum, terahertz (THz) wave is between light and microwave. Its photon energy is much lower than normal infrared light and its frequency is higher than microwave. Therefore, it is hard to implement techniques of these two spectral ranges into THz spectrum, especially techniques in generation, modulation and detection. This has hindered the exploitation of THz spectrum although recent studies have showed its promising potentials in industries such as semiconductors, biotechnology, communications, imaging and so on. In THz detection, it is critical to have detectors with high response speed, high sensitivity and capability of operating at room temperature. In this study, we have designed a bow-tie antenna and integrated it into a graphene photodetector. By simulating with finite element analysis, we optimize the total length of the bow-tie antenna as about 50 mu m and a gap of about 800 nm in the middle in order to target at 2.7 THz wave. By design, the antenna localizes the THz radiation to the narrow gap and enhances the local electric field by more than 20 times. Inside the same narrow gap, we build a graphene pn junction by applying different voltages on the two halves of the antenna, which also function as two independent gate electrodes in the device. In this device geometry, the absorption enhancement region overlaps with photocarrier separation regions in graphene, which therefore greatly increases photocurrent generation as firstly reported in Ref. 25. In addition to the antenna, we also design the channel. Firstly, we use BN-encapsulated graphene which has shown low residual doping (residual doping concentration of 1.3 x 10(11) cm(-2)) and high mobility (mu up to 20000 cm(2)center dot V-1 center dot s(-1) at room temperature) in the device. The high-quality graphene as channel guarantees a large seeback-coefficient difference at the pn junction and fast photoresponse. Secondly, the channel width at the antenna gap is reduced for further increasing the electron temperature and photocarrier-separating efficiency. Whereas the channel width at the contact is maintained for decreasing the contact resistance. With the antenna and channel design in an as-fabricated device, the photocurrent is enhanced by up to 2 orders of magnitude when the polarization of incident wave coincides with the optimized polarization of the antenna. The corresponding noise equivalent power (NEP) is calculated as about 1 nW center dot Hz(-1/2) if Johnson-Nyquist noise is assumed as the dominating noise. Moreover, the operating frequency is measured as larger than 5 kHz, which, together with the enhanced photoresponse, indicates that our design is a promising candidate for THz detection.
Keyword ：
pn junction pn junction Graphene Graphene Terahertz detector Terahertz detector Bow-tie antenna Bow-tie antenna
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Yang, Jiawei , Zheng, Chunyang , Pang, Yahui et al. Graphene Based Room-Temperature Terahertz Detector with Integrated Bow-Tie Antenna [J]. | ACTA PHYSICO-CHIMICA SINICA , 2023 , 39 (10) . |
| MLA | Yang, Jiawei et al. "Graphene Based Room-Temperature Terahertz Detector with Integrated Bow-Tie Antenna" . | ACTA PHYSICO-CHIMICA SINICA 39 . 10 (2023) . |
| APA | Yang, Jiawei , Zheng, Chunyang , Pang, Yahui , Ji, Zhongyang , Li, Yurui , Hu, Jiayi et al. Graphene Based Room-Temperature Terahertz Detector with Integrated Bow-Tie Antenna . | ACTA PHYSICO-CHIMICA SINICA , 2023 , 39 (10) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
Thermal rollover is one of the fundamental limitations that affect the output power and modulation bandwidth of high-speed laser in monolithic laser integrated circuits (ICs). Herein, an 850 nm vertical cavity surface emitting laser (VCSEL) with p-doping and sub quantum well (sub QW) centers active layer is proposed and investigated. The p-doping and sub QW insert in the offset position of each barrier, which are designed for reducing the thermal rollover and increasing the maximum intrinsic modulation bandwidth of the laser. Numerical simulations show that adding the p-doping and sub QW in active region could reduce the threshold currents (Ith), improve the slope efficiency (SE) and delay the thermal rollover in VCSEL. Comparing with previous VCSEL, our proposed VCSEL has excellent high temperature output performance, and the maximum simulation 3-dB bandwidth is 43.9 GHz at 25 degrees C and 33.1 GHz at 85 degrees C, respectively. Furthermore, temperature-dependent time-resolved photoluminescence (PL) and PL excitation reveal this novel QW has strong radiative recombination rate, which is suitable for designing active region of high-speed and high power lasers.
Keyword ：
High-speed VCSEL High-speed VCSEL Small-signal modulation Small-signal modulation p-type 8-doping p-type 8-doping High temperature operation High temperature operation Sub quantum well Sub quantum well
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Cui, Ning , Guan, Baolu , Li, Jianjun et al. 850 nm VCSEL with sub quantum well and p-type 8-doping in the active layers for improved high-speed and high-temperature performance [J]. | OPTICS COMMUNICATIONS , 2023 , 530 . |
| MLA | Cui, Ning et al. "850 nm VCSEL with sub quantum well and p-type 8-doping in the active layers for improved high-speed and high-temperature performance" . | OPTICS COMMUNICATIONS 530 (2023) . |
| APA | Cui, Ning , Guan, Baolu , Li, Jianjun , Cui, Lijie , Liu, Xingfang , Zeng, Yiping . 850 nm VCSEL with sub quantum well and p-type 8-doping in the active layers for improved high-speed and high-temperature performance . | OPTICS COMMUNICATIONS , 2023 , 530 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
The advancement of electron transport layer (ETL)-free perovskite solar cells (PSCs) is crucial for the commercialization of PSCs. At present, the slow electron extraction and significant carrier recombination, related to the energy-level alignment at the FTO/perovskite interface, restrict the performance of ETL-free PSCs. The facile modification of bottom electrodes is pivotal for tackling these issues and stimulating the photovoltaic potential of perovskite. Herein, a cost-competitive and neoteric 1-hydroxyethyl-3-methylimidazolium chloride, [HOEtMIM]Cl, ionic liquid is employed to modify the surface of rigid and flexible electrodes, and thus enable an energetically well-aligned interface with perovskite layer via the electric dipole effects. The resulting barrier-free FTO/perovskite contact can tremendously ameliorate the electron extraction and collection, with mitigated nonradiative interfacial carrier recombination loss. Additionally, the lone pair on the nitrogen of the imidazole group passivates the surface defects of perovskite layers, and the chloride anion plays a role in the crystallinity improvement of perovskite. Leveraged by the [HOEtMIM]Cl modification, the resulting ETL-free rigid and flexible devices deliver an outstanding power conversion efficiency of 19.60 % and 15.57 %, along with the ameliorated hysteresis and long-term tenability. This finding highlights the drastic potential of the engineered [HOEtMIM]Cl in manufacturing stable and high-performance ETL-free PSCs for their scaled-up production. Ionic liquids can do more! A facile and efficient self-assembled [HOEtMIM]Cl layer is introduced for the first time in the rigid and flexible electron transport layer-free perovskite solar cells, giving rise an improved power conversion efficiency of 19.60 % and 15.57 %, along with an improved hysteresis and stability.image
Keyword ：
perovskite photovoltaic. [HOEtMIM]Cl. energy level alignment. non-radiative recombination. charge extraction perovskite photovoltaic. [HOEtMIM]Cl. energy level alignment. non-radiative recombination. charge extraction
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Huang, Shuai , Dong, Guifang , Zhu, Liangliang et al. Multifunctional Self-Assembled Ionic Liquid Modified Rigid and Flexible Substrates for Efficient Simple-Structured Perovskite Solar Cells [J]. | CHEMSUSCHEM , 2023 , 16 (24) . |
| MLA | Huang, Shuai et al. "Multifunctional Self-Assembled Ionic Liquid Modified Rigid and Flexible Substrates for Efficient Simple-Structured Perovskite Solar Cells" . | CHEMSUSCHEM 16 . 24 (2023) . |
| APA | Huang, Shuai , Dong, Guifang , Zhu, Liangliang , Guan, Baolu . Multifunctional Self-Assembled Ionic Liquid Modified Rigid and Flexible Substrates for Efficient Simple-Structured Perovskite Solar Cells . | CHEMSUSCHEM , 2023 , 16 (24) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
In this paper, the 795-nm vertical cavity surface emitting laser (VCSEL) with sub-wavelength grating coupled cavity is proposed and designed based on the theory of resonant coupled cavity, and the mechanism of multi-cavity coupling linewidth narrowing and influencing factors are analyzed in detail by using the COMSOL software finite element method. The analysis results show that when photonic resonance takes place in a multi-coupled cavity, the grating-coupled cavity with reasonable design parameters and the multi-coupled cavity formed by precisely controlled lasers are phase-matched, which greatly strengthens the narrowing effect of the spectral linewidth resonance, and a 795-nm VCSEL laser with high beam quality and ultra-narrow linewidth output is obtained, finally. Theoretical results display that the reflection spectrum cold cavity linewidth Delta lambda c of the coupling cavity with a thickness of 180nm of the spacer layer can reach 7 pm, which lays a theoretical foundation for achieving a kHz-level spectral linewidth output of VCSEL lasers.
Keyword ：
resonant coupled cavity resonant coupled cavity ultra-narrow linewidth ultra-narrow linewidth subwavelength grating subwavelength grating vertical cavity surface emitting laser vertical cavity surface emitting laser
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zhang Fu-Ling , Fu Li-Shan , Hu Pi-Li et al. Ultra-narrow linewidth characteristics of 795-nm subwavelength grating-coupled cavity vertical cavity surface emitting laser [J]. | ACTA PHYSICA SINICA , 2021 , 70 (22) . |
| MLA | Zhang Fu-Ling et al. "Ultra-narrow linewidth characteristics of 795-nm subwavelength grating-coupled cavity vertical cavity surface emitting laser" . | ACTA PHYSICA SINICA 70 . 22 (2021) . |
| APA | Zhang Fu-Ling , Fu Li-Shan , Hu Pi-Li , Han Wen-Jie , Wang Hong-Zhuo , Zhang Feng et al. Ultra-narrow linewidth characteristics of 795-nm subwavelength grating-coupled cavity vertical cavity surface emitting laser . | ACTA PHYSICA SINICA , 2021 , 70 (22) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
With the rapid development of information technology, a wavelength-tunable vertical cavity surface emitting laser (VCSEL) is urgently needed as an optical signal source in dense wavelength division multiplexing (DWDM). Liquid crystal tunable VCSEL realized by utilizing the birefringence characteristics of liquid crystal has the advantages of stable polarization, high reliability, continuous wavelength tuning. In this paper, a liquid crystal tunable VCSEL structure based on intracavity sub wavelength grating is designed, and the influence of liquid crystal layer and sub wavelength grating on the wavelength tuning characteristics of VCSEL are analyzed and studied in depth. The results show that the thickness of the liquid crystal layer in the tunable VCSEL structure not only affects the wavelength tuning range, but also determines the mode hopping in the tuning process. In addition, an effective refractive index antireflection layer is formed by designing the subwavelength grating structure, and the refractive index difference between the liquid crystal layer and the semiconductor layer is optimized to further improve the wavelength tuning range and tuning efficiency. When the center wavelength is 980 nm, the tuning range is increased by 42%, reaching 41 nm, and the wavelength tuning efficiency is increased by 41%. It provides a new method of designing the VCSEL laser with high beam quality and continuous wavelength tuning.
Keyword ：
tunable tunable liquid crystal liquid crystal vertical cavity surface emitting laser vertical cavity surface emitting laser
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wang Zhi-Peng , Guan Bao-Lu , Zhang Feng et al. Liquid crystal tunable vertical cavity surface emission laser with inner cavity sub-wavelength grating [J]. | ACTA PHYSICA SINICA , 2021 , 70 (22) . |
| MLA | Wang Zhi-Peng et al. "Liquid crystal tunable vertical cavity surface emission laser with inner cavity sub-wavelength grating" . | ACTA PHYSICA SINICA 70 . 22 (2021) . |
| APA | Wang Zhi-Peng , Guan Bao-Lu , Zhang Feng , Yang Jia-Wei . Liquid crystal tunable vertical cavity surface emission laser with inner cavity sub-wavelength grating . | ACTA PHYSICA SINICA , 2021 , 70 (22) . |
| Export to | NoteExpress RIS BibTex |
Export
| Results： |
Selected to |
| Format： |
