|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | High energy soliton pulse generation by a magnetron-sputtering-deposition-grown MoTe_2 saturable absorber显示文摘The pulse energy in the ultrafast soliton fiber laser oscillators is usually limited by the well-known wave-breaking phenomenon owing to the absence of a desirable real saturable absorber(SA) with high power tolerance and large modulation depth. Here, we report a type of microfiber-based MoTe_2 SA fabricated by the magnetron-sputtering deposition(MSD) method. High-energy wave-breaking free soliton pulses were generated with pulse duration/pulse energy/average output power of 229 fs/2.14 nJ/57 mW in the 1.5 μm regime and 1.3 ps/13.8 nJ/212 mW in the 2 μm regime, respectively. To our knowledge, the generated soliton pulses at 1.5 μm had the shortest pulse duration and the highest output power among the reported erbium-doped fiber lasers mode locked by transition metal dichalcogenides. Moreover, this was the first demonstration of a MoTe_2-based SA in fiber lasers in the 2 μm regime, and the pulse energy/output power are the highest in the reported thulium-doped fiber lasers mode locked by two-dimensional materials. Our results suggest that a microfiber-based MoTe_2 SA could be used as an excellent photonic device for ultrafast pulse generation, and the MSD technique opens a promising route to produce a high-performance SA with high power tolerance and large modulation depth, which are beneficial for high-energy wave-breaking free pulse generation. | JINTAO WANG ZIKE JIANG HAO CHEN JIARONG LI JINDE YIN JINZHANG WANG TINGCHAO HE PEIGUANG YAN SHUANGCHEN RUAN | 2018 | Photonics Research2018，6，6： | 14 |
| 2 | Ultrafast optical nonlinearity of blue-emitting perovskite nanocrystals显示文摘Perovskite nanocrystals(NCs) have strong nonlinear optical responses with a number of potential applications,ranging from upconverted blue-lasing to the tagging of specific cellular components in multicolor fluorescence microscopy. Here, we determine the one-photon linear absorption cross section of two kinds of blue-emitting perovskite NCs, i.e., CsPbCl_3 and CsPb(Cl_(0.53)Br_(0.47))_3, by utilizing femtosecond transient absorption spectroscopy. The wavelength-dependent nonlinear refraction and two-photon absorption have been measured at wavelengths from 620 to 720 nm by performing Z-scan measurements. The nonlinear optical responses of CsPb(Cl_(0.53)Br_(0.47))_3 are much more pronounced than those of CsPbCl_3 due to the larger structural destabilization of the former. | JUNZI LI CAN REN XIN QIU XIAODONG LIN RUI CHEN CHENG YIN TINGCHAO HE | 2018 | Photonics Research2018，6，6： | 3 |
| 3 | Influence of mixed organic cations on the nonlinear optical properties of lead tri-iodide perovskites显示文摘Metal halide perovskite materials have been widely studied recently due to their excellent optoelectronic properties.Among these materials,organic-inorganic hybrid perovskites have attracted much attention because of their relatively soft framework,which makes them more suitable for nonlinear optical(NLO)applications.However,there is rare physical mechanism study on the coexistence of two-photon absorption(TPA)and saturable absorption(SA)in organic-inorganic hybrid perovskite materials.To clarify this issue,the NLO properties of mixed cation perovskite MA1-xFAxPbI3[MA=CH3NH3,FA=CH(NH2)2,x=0,0.2,0.4,0.6,and 0.8]thin films are investigated in this paper.Based on the nonlinear transmittance and femtosecond-transient absorption spectrum measurements,it is found that the MA1-xFAxPbI3 materials exhibit NLO behavior dependent on excitation intensity.The TPA coefficient of MA1-xFAxPbI3 decreases with the increase of formamidinium(FA)content,while the relevant saturable intensity increases.In addition,it is revealed that the linear absorption process from valence band 2 to valance band 1 still exists even under a very low excitation intensity.With the increase of excitation intensity,the light transmittance at 1300 nm decreases first and then increases sharply,which also supports the explanation for the coexistence of TPA and SA.It is expected that our findings will promote the application of perovskite materials in nonlinear optoelectronic devices. | XUANYU ZHANG SHUYU XIAO RUXUE LI TINGCHAO HE GUICHUAN XING AND RUI CHEN | 2020 | Photonics Research2020，8，9： | 1 |
| 4 | Nonlinear optical properties of an azo-based dye irradiated by picosecond and nanosend laser pulses显示文摘 | He Tingchao Wang Changshun Zhang Chaozhi | 2011 | Condensed Matter2011，406，3： | 1 |
| 5 | Linear and nonlinear photophysical properties of ZnSe/CdS/ZnS core/shell/shell typeⅡnanocrystals显示文摘In this work,one kind of typeⅡZnSe/CdS/ZnS core/shell/shell nanocrystals(NCs)is synthesized,and their linear and nonlinear photophysical properties are investigated.Through measurements of the temperaturedependent photoluminescence spectra of NCs,their excitonic properties,including the coefficient of the bandgap change,coupling strength of the exciton acoustic phonons,exciton longitudinal optical(LO)phonons,and LO–phonon energy are revealed.Femtosecond transient absorption spectroscopy was employed to obtain insight into ultrafast processes occurring at the interface of ZnSe and CdS,such as those involving the injection of photoinduced electrons into the CdS shell,interfacial state bleaching,and charge separation time.At the end,their multiphoton absorption spectra were determined by using the z-scan technique,which yielded a maximum twophoton absorption cross section of 3717 GM at 820 nm and three-photon absorption cross section up to 3.9×10^-77cm^6·s^2·photon^-2at 1220 nm,respectively.The photophysical properties presented here may be important for exploiting their relevant applications in optoelectronic devices and deep-tissue bioimaging. | YANG GAO XIN QIU FULI ZHAO SHUYU XIAO JUNZI LI XIAODONG LIN RUI CHEN AND TINGCHAO HE | 2020 | Photonics Research2020，8，9： | 1 |
| 6 | Promoting near-infrared photocatalytic activity of carbon-doped carbon nitride via solid alkali activation显示文摘Ultrabroad spectral absorption is required for semiconductor photocatalysts utilized for solar-to-chemical energy conversion.The light response range can be extended by element doping,but the photocatalytic performance is generally not enhanced correspondingly.Here we present a solid alkali activation strategy to synthesize near-infrared(NIR)light-activated carbon-doped polymeric carbon nitride(A-cPCN)by combining the copolymerization of melamine and 1,3,5-trimesic acid.The prepared A-cPCN is highly crystalline with a narrowed bandgap and enhanced efficiency in the separation of photogenerated electrons and holes.Under irradiation with NIR light(780 nm≥λ≥700 nm),A-cPCN shows an excellent photocatalytic activity for H_(2)generation from water with rate of 165µmol g^(−1)h^(−1),and the photo-redox activity for H_(2)O_(2)production(109µmol g^(−1)h^(−1))from H_(2)O and O_(2),whereas no observed photocatalytic activity over pure PCN.The NIR photocatalytic activity is due to carbon doping,which leads to the formation of an interband level,and the alkali activation that achieved shrinking the transfer distance of photocarriers.The current synergistic strategy may open insights to fabricate other carbon-nitrogen-based photocatalysts for enhanced solar energy capture and conversion. | Qingfeng Li Can Ren Chuntian Qiu Tingchao He Qitao Zhang Xiang Ling Yangsen Xu Chenliang Su | 2021 | Chinese Chemical Letters2021，32，11： | 1 |
| 7 | SERS-measured and DFT-calculated vibrational spectra of p-aminoazobenzene显示文摘 | HE Tingchao LI Pengwei MO Yujun | 2007 | Eur Phys J Appl Phys2007，38，： | 1 |
| 8 | Z-scan determination of third-order nonlinear optical nonlinearity of three azobenzenes doped polymer films显示文摘 | HE Tingchao CHENG Yongguang MO Yujun | 2007 | Opt Commun2007，275，： | 1 |
| 9 | Superior multiphoton absorption properties in colloidal Mn-doped CsPbCl3two-dimensional nanoplatelets显示文摘We have studied the two-and three-photon absorption(2PA and 3PA) properties of Mn-doped CsPbCl_3 twodimensional nanoplatelets(2D NPs) and cubic nanocrystals. Compared with their cubic counterparts, the Mn-doped 2D NPs exhibit stronger quantum confinement effects that can more efficiently enhance their dopantcarrier exchange interactions and multiphoton absorption. More specifically, the maximum volume-normalized 2PA and 3PA cross sections of the 2D NPs were 6.8 and 7.2 times greater than those of their cubic counterparts,respectively, reaching up to 1237 GM∕nm^3 in the visible light band and 2.24 × 10^(-78) cm^6· s^2· photon^(-2)∕nm^3 in the second biological window, respectively. | TINGCHAO HE JUNZI LI XIN QIU SHUYU XIAO XIAODONG LIN | 2018 | Photonics Research2018，，11： | 0 |
| 10 | A Versatile Tetraphenylethene Derivative Bearing Excitation Wavelength Dependent Emission,Multistate Mechanochromism,Reversible Photochromism,and Circularly Polarized Luminescence and Its Applications in Multimodal Anticounterfeiting显示文摘Multimodal anticounterfeiting has become increasingly challenging in modern society to guarantee information security and the safety of property.In this study,a versatile cholesterol-containing tetraphenylethene derivative is shown to have multiple optical properties,including stimuli-responsive fluorescence,reversible photochromism,excitation wavelength dependent luminescence,and circularly polarized luminescence.After the application of diverse processing methods(writing,screen painting,drawing,and pyrography),we found that this molecule can serve as an anticounterfeiting toolbox to provide rich anticounterfeiting effects through the synergistical use of multiple optical properties.This work offers important insight for designing novel small organic molecules for advanced multimodal anticounterfeiting technology. | Qing Xia Weiwei Xie Tingchao He Hongyan Zhang Zujin Zhao Guangxi Huang Bing Shi Li Ben Zhong Tang | 2023 | CCS Chemistry2023，5，7： | 0 |
| 11 | Stimulating and harnessing circularly polarized luminescence of helically assembled carbonized polymer dots via interfacial dynamics显示文摘Stimulating and harnessing circularly polarized luminescence(CPL)is not only a sine qua non for fundamentally unveiling chirogenesis in physical chemistry,but also a pivotal prerequisite for implementation of such phenomenon in research fields including chiral optoelectronics and theranostics.Herein,red-emissive carbonized polymer dots(CPDs)-based helical structures were synthesized in this work via biomolecule-tailored organic–inorganic co-assembly strategy.The surface statesrelated chirality exhibits enhanced circular dichroism(CD)and CPL activities with anisotropic factors as high as gCD,max=5.4×10^(−3) and glum,max=1.5×10^(−2),respectively.The obtained CPL signals can be further manipulated in an excitationdependent manner,indicating that a synergistic-competition phenomenon exists between configurational chirality and intermolecular energy-transfer dynamics,which is further supported by simulations based on density function theory(DFT).Such tunable CPL behavior triggers revolutionary designs and applications of these chiral CPDs into the realm of chirality-related biological issues and next-generation chiral optoelectronics. | Jiaying Lin Rulin Liu Peixian Chen Yangfei Lv Junjie Hao Meijuan Chen Dongxiang Zhang Ruikun Pan Yiwen Li Xi Zhu Tingchao He Jiaji Cheng | 2023 | Aggregate2023，4，4： | 0 |
| 12 | Metal-to-ligand charge transfer chirality-based sensing of mercury ions显示文摘Chiral ligand conjugated transition metal oxide nanoparticles(NPs) are a promising platform for chiral recognition, biochemical sensing, and chiroptics. Herein, we present chirality-based strategy for effective sensing of mercury ions via ligand-induced chirality derived from metal-to-ligand charge transfer(MLCT) effects. The ligand competition effect between molybdenum and heavy metal ions such as mercury is designated to be essential for MLCT chirality. With this know-how, mercury ions, which have a larger stability constant(Kf) than molybdenum, can be selectively identified and quantified with a limit of detection(LOD) of 0.08 and 0.12 nmol/L for D-cysteine and L-cysteine(Cys) capped Mo O2 NPs. Such chiral chemical sensing nanosystems would be an ideal prototype for biochemical sensing with a significant impact on the field of biosensing, biological systems,and water research-based nanotoxicology. | XIONGBIN WANG QIUSHI WANG YULONG CHEN JIAGEN LI RUIKUN PAN XING CHENG KAR WEI NG XI ZHU TINGCHAO HE JIAJI CHENG ZIKANG TANG RUI CHEN | 2021 | Photonics Research2021，9，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员