| 1 | Organic Microlaser Arrays:From Materials Engineering to Optoelectronic Applications显示文摘CONSPECTUS:In the past decade,micro/nanoscale lasers have captured broad research interest for their feasibility in advancing the fields of photonics and optoelectronics.Owing to ease of spectral and chemical tuning,convenient processing techniques,low threshold,and mechanical flexibilities,organic microlasers are promising candidates for novel devices that meet the developing trends of the field toward miniaturization,portability,and highly integration.To unleash the full potential for future integrated optoelectronics,organic microlaser arrays with specific functionalities and controllable alignment are on urgent demand.In recent years,ever-increasing efforts have been concentrated on the preparation and optoelectronic applications of organic microlaser arrays,which significantly expands the capabilities and improves the performance of organic microlasers.Therefore,it is of great importance to summarize this flourishing research area and give a deep understanding on the structure−function relationship and application-oriented fabrication strategies of organic microlaser arrays,which will be instructive for future development.In this Account,we systematically review recent progress in the field of organic microlaser arrays,with emphasis on the rational materials engineering as well as controlled patterning techniques toward integrated optoelectronic applications.Owing to excellent versatility and compatibility,organic materials are beneficial for the construction of microlasers with specific properties,such as tunable wavelength,switchable output among several wavelengths,and controllable lasing mode,which are of great significance to reliable applications in the field of information.A series of patterning techniques,including inkjet printing,template-assisted patterning,screen printing,and so on,have been applied to such functionalized organic microlasers to realize array configuration of multifunctionality and large-scale integration.The novel applications of the organic microlaser arrays are also presented,in particular,for photonic circuits,laser displays,and information encryption.Finally,future perspectives and challenges for assembled organic microlasers and arrays toward practical applications are provided to give an outlook of this emerging field.We anticipate that this Account will promote the development of organic microlasers with desired performance toward robust integrated optoelectronic applications. | Jie Liang Yongli Yan Yong Sheng Zhao | 2021 | Accounts of Materials Research2021，2，5： | 1 |
| 2 | Electrically driven single microwire-based single-mode microlaser显示文摘Engineering the lasing-mode oscillations effectively within a laser cavity is a relatively updated attentive study and perplexing issue in the field of laser physics and applications. Herein, we report a realization of electrically driven single-mode microlaser, which is composed of gallium incorporated zinc oxide microwire (ZnO:Ga MW) with platinum nanoparticles (PtNPs, d ~ 130 nm) covering, a magnesium oxide (MgO) nanofilm, a Pt nanofilm, and a p-type GaN substrate. The laser cavity modes could resonate following the whispering-gallery mode (WGM) among the six side surfaces by total internal reflection, and the single-mode lasing wavelength is centered at 390.5 nm with a linewidth of about 0.18 nm. The cavity quality factor Q is evaluated to about 2169. In the laser structure, the usage of Pt and MgO buffer layers can be utilized to engineer the band alignment of ZnO:Ga/GaN heterojunction, optimize the p-n junction quality and increase the current injection. Thus, the well-designed device structure can seamlessly unite the electron-hole recombination region, the gain medium, and optical microresonator into the PtNPs@ZnO:Ga wire perfectly. Such a single MW microlaser is essentially single-mode regardless of the gain spectral bandwidth. To study the single-mode operation, PtNPs working as superabsorber can engineering the multimode lasing actions of ZnO:Ga MWs even if their dimensions are typically much larger than that of lasing wavelength. Our findings can provide a straightforward and effective scheme to develop single-mode microlaser devices based on one-dimensional wire semiconductors. | Xiangbo Zhou Mingming Jiang Kai Xu Maosheng Liu Shulin Sha Shuiyan Cao Caixia Kan Da Ning Shi | 2022 | Light(Science & Applications)2022，11，8： | 0 |
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