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学者姓名：翟天瑞
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Abstract ：
Wavelength switchable microcavity is indispensable component for various integrated photonic devices. However, achieving two wavelength band emission of the whispering gallery mode (WGM) laser is challenging. Here, we propose a strategy to realize two wavelength band emission WGM lasers activated by photo-isomerization based on excited-state intramolecular proton transfer (ESIPT) process in isolated/coupled polymer microfiber cavities. The WGM microcavity is built by highly polarized organic intramolecular charge-transfer (ICT) dye molecules. The two cooperative gain states of ICT dye molecules can be controlled by optimizing energy levels. Thereby, the lasing wavelength can be reversibly switched under photo-isomerization activated in the ESIPT energy-level progress. The photonic bar code can be generated by following the strategy of proposed design. This work provides a promising route to achieve switchable WGM laser in on-chip photonic integration.
Keyword ：
ESIPT ESIPT WGM laser WGM laser two wavelength band emission two wavelength band emission photo-isomerization photo-isomerization
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| GB/T 7714 | Ge, Kun , Ruan, Jun , Liang, Ningning et al. Two wavelength band emission WGM lasers via photo-isomerization [J]. | NANOPHOTONICS , 2023 , 12 (21) : 4087-4094 . |
| MLA | Ge, Kun et al. "Two wavelength band emission WGM lasers via photo-isomerization" . | NANOPHOTONICS 12 . 21 (2023) : 4087-4094 . |
| APA | Ge, Kun , Ruan, Jun , Liang, Ningning , Guo, Dan , Cui, Libin , Iqbal, Naeem et al. Two wavelength band emission WGM lasers via photo-isomerization . | NANOPHOTONICS , 2023 , 12 (21) , 4087-4094 . |
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Abstract ：
Patterning of luminescent nanomaterials is critical in the fields of display and information encryption, and inkjet printing technology have shown remarkable significance with the advantage of fast, large-scalable and integrative. However, inkjet printing nanoparticle deposits with high-resolution and well controlled morphology from nonpolar solvent droplets is still challenging. Herein, a facile approach of nonpolar solvent modulated inkjet printing of nanoparticles self-assembly patterns driven by the shrinkage of the droplet and inner solutal convection is proposed. Through regulating the solvent composition and nanoparticle concentration, multicolor light-emissive upconversion nanoparticle self-assembly microarrays with tunable morphologies are achieved, showing the integration of designable microscale morphologies and photoluminescences for multimodal anti-counterfeit. Furthermore, inkjet printing of nanoparticles self-assembled continuous lines with adjustable morphologies by controlling the coalescence and drying of the ink droplets is achieved. The high resolution of inkjet printing microarrays and continuous lines' width < 5 and 10 mu m is realized, respectively. This nonpolar solvent-modulated inkjet printing of nanoparticle deposits approach facilitates the patterning and integration of different nanomaterials, and is expected to provide a versatile platform for fabricating advanced devices applied in photonics integration, micro-LED, and near-field display.
Keyword ：
inkjet print inkjet print morphology morphology self-assembly self-assembly upconversion nanoparticles upconversion nanoparticles nonpolar solvents nonpolar solvents
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| GB/T 7714 | Guo, Dan , Xu, Yanan , Ruan, Jun et al. Nonpolar Solvent Modulated Inkjet Printing of Nanoparticle Self-Assembly Morphologies [J]. | SMALL , 2023 , 19 (28) . |
| MLA | Guo, Dan et al. "Nonpolar Solvent Modulated Inkjet Printing of Nanoparticle Self-Assembly Morphologies" . | SMALL 19 . 28 (2023) . |
| APA | Guo, Dan , Xu, Yanan , Ruan, Jun , Tong, Junhua , Li, Yixuan , Zhai, Tianrui et al. Nonpolar Solvent Modulated Inkjet Printing of Nanoparticle Self-Assembly Morphologies . | SMALL , 2023 , 19 (28) . |
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Abstract ：
As a new type of optical devices, random lasers are unique in concept and principle. Due to the unique characteristics of optical field, simple structure, easy preparation and low cost, random lasers have wide application prospects in fields of imaging, sensing, and photonic chips. The optical feedback in the random laser is provided by the multiple scattering in the disordered gain medium. The inner disorder determines many emission characteristics of random lasers, such as low spatial coherence, random emission wavelength and direction. The output directivity of random lasing is an important factor in many applications, which can be optimized by transferring the random laser on fiber facet. Meanwhile, the random laser on fiber facet is of benefit to miniaturization and integration of random lasers. In this review, a brief introduction is given about the basic concept, typical characteristics and control methods of random lasers. Importantly, focusing on optical fiber facet-based random lasers, we emphatically summarized the design ideas, preparation methods, emission characteristics, and application in imaging/sensing. Besides, the development trend of optical fiber facet-based random lasers is prospected.
Keyword ：
optical fiber optical fiber random lasers random lasers speckle-free imaging speckle-free imaging sensing sensing
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| GB/T 7714 | Tong JunHua , Zhai TianRui . Optical fiber facet-based random lasers [J]. | SCIENTIA SINICA-PHYSICA MECHANICA & ASTRONOMICA , 2023 , 53 (11) . |
| MLA | Tong JunHua et al. "Optical fiber facet-based random lasers" . | SCIENTIA SINICA-PHYSICA MECHANICA & ASTRONOMICA 53 . 11 (2023) . |
| APA | Tong JunHua , Zhai TianRui . Optical fiber facet-based random lasers . | SCIENTIA SINICA-PHYSICA MECHANICA & ASTRONOMICA , 2023 , 53 (11) . |
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Abstract ：
This research investigates the hybridized plasmonic response of silver film combined with dispersed silver (Ag) nanowires (NWs) to random laser emission. The mixture of Rhodamine B (RhB) dye and polyvinyl alcohol (PVA) matrix is taken as the gain medium for random lasing, and the silver combination provides feedback mechanisms for light trapping. Importantly, film roughness and the coupling between localized and extended (delocalized) surface plasmons play a vital role in RL performance evaluation. The laser threshold is strongly influenced by film thickness attributed to surface roughness. Furthermore, the variation in film thickness also supports the wavelength modulation of 9 nm (597 nm to 606 nm), which results from the reabsorption of RhB. Additionally, the intriguing capability of emission wavelength tuning under the variation of temperature facilitates exciting prospects for precise wavelength control in plasmonic devices.(c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
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| GB/T 7714 | Gohar, Aziz , Yan, Jiuhu , Xu, Zhiyang et al. Tunable random laser based on hybrid plasmonic enhancement [J]. | OPTICS EXPRESS , 2023 , 31 (22) : 36150-36160 . |
| MLA | Gohar, Aziz et al. "Tunable random laser based on hybrid plasmonic enhancement" . | OPTICS EXPRESS 31 . 22 (2023) : 36150-36160 . |
| APA | Gohar, Aziz , Yan, Jiuhu , Xu, Zhiyang , Shen, Kaiyue , Anwar, Hayat , Shi, Xiaoyu et al. Tunable random laser based on hybrid plasmonic enhancement . | OPTICS EXPRESS , 2023 , 31 (22) , 36150-36160 . |
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Abstract ：
Manipulating laser modes in diffusive random systems is crucial to understanding the optical physics of disordered structures. However, the laser modes in diffusive random lasers are highly extended and correlated, making their manipulation difficult. Herein, this work reveals the critical role of the pump boundary on the governing mode interaction and emission characteristics of diffusive random lasers (RLs). By increasing the ratio between the square root of the pump area and the circumference of the pump region, the strongly correlated nonresonant laser mode with a continuous spectral distribution is transformed into an independent resonant laser mode with a discrete frequency distribution. A critical ratio of 5.76 is demonstrated as the transition point for pump spots with arbitrary shapes. This pump strategy provides a universal guideline for regulating laser modes in diffusive RL systems that can be applied to multifunctional lasers to clarify the behavior of light in disordered structures.
Keyword ：
pump manipulating pump manipulating diffusive diffusive nonresonant laser mode nonresonant laser mode resonant laser mode resonant laser mode random lasers random lasers
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| GB/T 7714 | Shi, Xiaoyu , Song, Wanting , Liang, Ningning et al. Manipulating Laser Modes in Diffusive Disordered Systems by Precisely Designing the Boundary of the Local Pump [J]. | LASER & PHOTONICS REVIEWS , 2023 , 17 (10) . |
| MLA | Shi, Xiaoyu et al. "Manipulating Laser Modes in Diffusive Disordered Systems by Precisely Designing the Boundary of the Local Pump" . | LASER & PHOTONICS REVIEWS 17 . 10 (2023) . |
| APA | Shi, Xiaoyu , Song, Wanting , Liang, Ningning , Guo, Dan , Shen, Kaiyue , Zhai, Tianrui . Manipulating Laser Modes in Diffusive Disordered Systems by Precisely Designing the Boundary of the Local Pump . | LASER & PHOTONICS REVIEWS , 2023 , 17 (10) . |
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Abstract ：
Functional microfibers have attracted extensive attention due to their potential in health monitoring, radiation cooling, power management and luminescence. Among these, polymer fiber-based microlasers have plentiful applications due to their merits of full color, high quality factor and simple fabrication. However, developing a facile approach to fabricate stable microfiber lasing devices for high-sensitivity thermal sensing is still challenging. In this research, we propose a design of a stable and transferable membrane inlaid with whispering-gallery-mode plasmon hybrid microlaser arrays for thermal sensing. By integrating plasmonic gold nanorods with polymer lasing microfiber arrays that are embedded in the polydimethylsiloxane matrix, whispering-gallery-mode lasing arrays with high quality are achieved. Based on the thermo-optical effect of the membrane, a tuning range of 1.462 nm for the lasing peak shift under temperature variation from 30.6 degrees C to 38.7 degrees C is obtained. The ultimate thermal sensing sensitivity can reach up to 0.181 nm degrees C-1 and the limit of detection is 0.131 degrees C, with a high figure of merit of 2.961 degrees C-1. Moreover, a stable laser linewidth can be maintained within the tuning range due to plasmon-improved photon confinement and PDMS-reduced scattering loss. This work is expected to provide a facile approach for the fabrication of high-sensitivity on-chip thermometry devices. We propose a design of stable and transferable membrane inlaid with whispering-gallery-mode plasmon hybrid microlaser arrays for sensitive and stable thermal sensing.
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| GB/T 7714 | Ruan, Jun , Li, Yixuan , Lin, Junzhe et al. Transferable microfiber laser arrays for high-sensitivity thermal sensing [J]. | NANOSCALE , 2023 , 15 (42) : 16976-16983 . |
| MLA | Ruan, Jun et al. "Transferable microfiber laser arrays for high-sensitivity thermal sensing" . | NANOSCALE 15 . 42 (2023) : 16976-16983 . |
| APA | Ruan, Jun , Li, Yixuan , Lin, Junzhe , Ren, Zihan , Iqbal, Naeem , Guo, Dan et al. Transferable microfiber laser arrays for high-sensitivity thermal sensing . | NANOSCALE , 2023 , 15 (42) , 16976-16983 . |
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Abstract ：
Control coupling and synchronization of lasers has become increasingly attractive for their applications in spectroscopy, imaging, sensing, secret communication, and optical networks. As complex microcavities emerge, more complicated light-matter interactions, along with the resulting distinct lasing emission behavior, is induced in these hybrid microcavities. This review summarizes the most important advances and current deep insights into the inherent relationship between the hybrid microcavity geometries and lasing behaviors, which are classified as the modulated lasing output freedom, including wavelength, angular momentum, mode, direction, and their multiple combinations. Finally, based on scientific research and practical application, the challenges and prospects of future development of hybrid microcavities are proposed, hoping to provide valuable inspiration for further optimizing hybrid microcavities to achieve low thresholds, small divergence angles, and single-mode microcavity lasers.
Keyword ：
lasing output characteristics lasing output characteristics microcavity geometry microcavity geometry hybrid microcavity lasers hybrid microcavity lasers coupling mechanism coupling mechanism
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| GB/T 7714 | Liang, Ningning , Yan, Jiuhu , Zhai, Tianrui . Hybrid Microcavity Lasers: Principle, Design, and Practical Application [J]. | LASER & PHOTONICS REVIEWS , 2023 , 17 (11) . |
| MLA | Liang, Ningning et al. "Hybrid Microcavity Lasers: Principle, Design, and Practical Application" . | LASER & PHOTONICS REVIEWS 17 . 11 (2023) . |
| APA | Liang, Ningning , Yan, Jiuhu , Zhai, Tianrui . Hybrid Microcavity Lasers: Principle, Design, and Practical Application . | LASER & PHOTONICS REVIEWS , 2023 , 17 (11) . |
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Abstract ：
In this work, multiple-beam colloidal quantum dot lasers are achieved in a double waveguide-grating (waveguide-grating-waveguide, W-G-W) microcavity. The grating is fabricated simply using interference lithography, and CdSe/CdS/ZnS colloidal quantum dots (CQDs) are spin-coated as the gain to form an active waveguide-grating structure. The photoresist film, which is not completely etched to the bottom, provides another waveguide-grating structure. In the W-G-W structure, low-threshold multiple-beam laser output is realized under optical pumping with emission peaks at 664.6 and 645.2 nm. The oblique laser is derived from a quasi-propagation mode. The thresholds of the two laser modes are 22.7 and 28.3 mu J/cm(2), respectively, and both laser modes are TE0 modes. In addition, the emission wavelengths of the two modes of the designed distributed feedback laser can be flexibly tuned by changing the thickness of the CQDs' waveguide layer. The presence of quasi-propagation modes provides another method for designing compact laser sources, which could help in the design of wireless communication networks, hyperspectral 3D sensing, and color laser displays.
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| GB/T 7714 | Liu, Fangyuan , Yin, Tuyu , Liu, Yu et al. Multiple-beam colloidal quantum dot lasers in a waveguide-grating-waveguide microcavity [J]. | APPLIED PHYSICS LETTERS , 2023 , 123 (7) . |
| MLA | Liu, Fangyuan et al. "Multiple-beam colloidal quantum dot lasers in a waveguide-grating-waveguide microcavity" . | APPLIED PHYSICS LETTERS 123 . 7 (2023) . |
| APA | Liu, Fangyuan , Yin, Tuyu , Liu, Yu , Naeem, Iqbal , Guo, Dan , Cui, Libin et al. Multiple-beam colloidal quantum dot lasers in a waveguide-grating-waveguide microcavity . | APPLIED PHYSICS LETTERS , 2023 , 123 (7) . |
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Abstract ：
Enantiomeric excess (ee) is an essential indicator of chiral drug purification in the pharmaceutical industry. However, to date the ee determination of unknown concentration enantiomers generally involves two separate techniques for chirality and concentration measurement. Here, a whispering-gallery mode (WGM) based optofluidic microlaser near exceptional point to achieve the ee determination under unknown concentration with a single technique is proposed. Exceptional point induces the unidirectional WGM lasing, providing the optofluidic microlaser with the novel capability to measure chirality by polarization, in addition to wavelength-based concentration detection. The dual-parameters detection of optofluidic microlaser empowers it to achieve ee determination of various unknown enantiomers without additional concentration measurements, a feat that is challenging to accomplish with other methods. Featuring the sensitivity enhancement and miniature structure of the WGM sensors, the obtained chiroptical response of the present approach is approximate to 30-fold higher than that of the conventional optical rotation-based polarimeter, and the reagent consumption is reduced by three orders of magnitude. By inducing the exceptional point, the whispering-gallery mode-based optofluidic microlaser is enhanced with the novel capability to measure chirality of enantiomer by polarization, in addition to wavelength-based concentration detection. The dual-parameters detection of optofluidic microlaser empowers it to achieve enantiomeric excess determination of various unknown enantiomers by a single technique, a feat that is challenging to accomplish with other methods.image
Keyword ：
optofluidic microlaser optofluidic microlaser chirality discrimination chirality discrimination enantiomeric excess determination enantiomeric excess determination exceptional point exceptional point whispering-gallery mode whispering-gallery mode
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| GB/T 7714 | Xu, Zhiyang , Yan, Yinzhou , Wang, Xingyuan et al. Determination of Enantiomeric Excess by Optofluidic Microlaser near Exceptional Point [J]. | ADVANCED SCIENCE , 2023 . |
| MLA | Xu, Zhiyang et al. "Determination of Enantiomeric Excess by Optofluidic Microlaser near Exceptional Point" . | ADVANCED SCIENCE (2023) . |
| APA | Xu, Zhiyang , Yan, Yinzhou , Wang, Xingyuan , Wang, Xiaolei , Zhou, Zhixiang , Yang, Xi et al. Determination of Enantiomeric Excess by Optofluidic Microlaser near Exceptional Point . | ADVANCED SCIENCE , 2023 . |
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Abstract ：
We present a hybrid cavity designed to manipulate lasing modes, consisting of a metal-dielectric core-shell hybrid microcavity fabricated using a simple brush-coating method. Single and multiple modes can be obtained in the proposed laser device by the trade-off between loss and gain. Moreover, we achieve electrically tunable whispering-gallery-mode lasing by employing the thermo-optic effect in the hybrid microcavity. The lasing peak of the modes can be electrically tuned by quantitative control of Joule heating. We measure a tuning rate of 15.3 pm/J for all the lasing peaks. Published under an exclusive license by AIP Publishing.
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| GB/T 7714 | Ge, Kun , Niu, Ben , Liu, Fangyuan et al. Electrically tunable WGM lasing in a metal-dielectric core-shell hybrid microcavity [J]. | APPLIED PHYSICS LETTERS , 2022 , 120 (23) . |
| MLA | Ge, Kun et al. "Electrically tunable WGM lasing in a metal-dielectric core-shell hybrid microcavity" . | APPLIED PHYSICS LETTERS 120 . 23 (2022) . |
| APA | Ge, Kun , Niu, Ben , Liu, Fangyuan , Ruan, Jun , Xu, Zhiyang , Guo, Dan et al. Electrically tunable WGM lasing in a metal-dielectric core-shell hybrid microcavity . | APPLIED PHYSICS LETTERS , 2022 , 120 (23) . |
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