Jingxin Ding

Nanyang Technological University

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Zhenrong Sun

East China Normal University

Shian Zhang

Zhejiang Provincial People's Hospital

Tianqing Jia

East China Normal University

Haifeng Pan

Xiamen University

Yunhua Yao

East China Normal University

Shuwu Xu

Nantong University

Qinying Ji

Goethe University Frankfurt

Qiying Song

Shenzhen University

Heping Zeng

East China Normal University

Xiaochun Gong

East China Normal University

Cooperative Institutions

East China Normal University

Chinese Academy of Sciences

Changchun University of Science and Technology

Shanghai Jiao Tong University

Shanghai Institute of Optics and Fine Mechanics

Shanxi University

University of Chinese Academy of Sciences

University of Shanghai for Science and Technology

Harbin Institute of Technology

Shanghai Institute of Ceramics

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Optical heterodyne-Zeeman modulation magnetic rotation spectroscopic technique

Chinese Science Bulletin (1999)

Yangqin Chen Zhiyi Bi Peipei Cai Jingxin Ding Rongjun Wang

Heterodyne (poetry)

Heterodyne detection

Modulation (music)

SIGNAL (programming language)

10.1007/bf02886342

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Citations (0)

Two-Dimensional Directional Proton Emission in Dissociative Ionization ofH2

Physical Review Letters (2014)

Xiaochun Gong Pei-Lun He Qiying Song Qinying Ji Haifeng Pan

An intense phase-controlled orthogonally polarized two-color ultrashort laser pulse is used to singly ionize and dissociate H2 into a neutral hydrogen atom and a proton. Emission-direction and kinetic-energy dependent asymmetric dissociation of H2 is observed as a function of the relative phase of the orthogonally polarized two-color pulse. Significant asymmetric proton emission is measured in the direction between two polarization axes. Our numerical simulations of the time-dependent Schrödinger equation reproduce many of the observed features. The asymmetry is attributed to the coherent superposition of two-dimensional nuclear wave packets with opposite parities, which have the same energies and overlap in the same emission directions.Received 4 June 2014DOI:https://doi.org/10.1103/PhysRevLett.113.203001© 2014 American Physical Society

10.1103/physrevlett.113.203001

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Citations (78)

Optical properties, magnetooptical properties and terahertz time-domain spectrum of Tb₃Sc₂Al₃O₁₂ crystals grown by optical floating zone methods

Optical Materials Express (2018)

Jingxin Ding Weizhao Jin Qingmin Chen Chunhe Hou Yang Yu

Tb3Sc2Al3O12 crystals have been grown by optical floating zone methods for the first time. The XRD patterns of TSAG crystals match well with the standard cards and the full width half maximum of the analyzed peaks is 0.00832°. The unique emission properties of TSAG crystals have been demonstrated in detail. The Verdet constant of TSAG crystals in the whole region is nearly 20% higher than that of commercial TGG crystals. The terahertz time domain spectrum of TSAG crystals has been analyzed for the first time, and we find that the refractive index is nearly 2, and the absorption coefficient is 2/cm from 1THz to 5 THz.

Optical materials

10.1364/ome.8.002880

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Citations (15)

Femtosecond pulse shaping technology and its applications

Acta Physica Sinica (2014)

Yunhua Yao Lu Chen-Hui Shuwu Xu Jingxin Ding Jia Tian-Qing

By controlling the spectral amplitude, phase and polarization of the femtosecond laser pulse in the frequency domain, a shaped femtosecond laser pulse with almost arbitrary pulse shape in time domain can be obtained, and this femtosecond laser pulse shaping technique provides a new experimental tool to study the nonlinear interaction between light and atoms or molecules. In this paper, we introduce the development history, technical method, control technique and relevant applications of the femtosecond laser pulse shaping technique, and also carry out a prospect on the research trends of this technique.

10.7498/aps.63.184201

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Citations (12)

Enantioselective Transformation of Hydrazones via Remote NHC Catalysis: Activation Across C═N and N–N Bonds

ACS Catalysis (2024)

Jiamiao Jin Ya Lv Wenli Tang Kunpeng Teng Yixian Huang

The catalytic asymmetric transformation of nitrogen atoms to prepare heterocyclic molecules is of significant value in organic synthesis and biological applications. Here, we disclose the activation of the nitrogen atom in hydrazine-derived hydrazone via an N-heterocyclic carbene (NHC) organic catalyst for highly enantioselective formal cycloaddition reactions. The range of NHC catalysis extends across several (carbon and hetero) atoms and diverse chemical bonds (C═N and N–N bonds) to activate nitrogen atoms at remote sites with excellent reactivity and (stereo)selectivity control. Our strategy for nitrogen atom activation, along with the NHC-bound diaza-diene intermediate generated during the catalytic process, offers alternative solutions for organic synthesis.

10.1021/acscatal.4c06029

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Growth and performance research of Tb 3 Ga 5 O 12 magneto-optical crystal

Journal of Crystal Growth (2017)

Weizhao Jin Jingxin Ding Liqiong Guo Qi Gu Chun Li

Verdet constant

Crystal (programming language)

10.1016/j.jcrysgro.2017.12.024

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Citations (33)

Laser polarization and phase control of up-conversion fluorescence in rare-earth ions

Scientific Reports (2014)

Yunhua Yao Shian Zhang Hui Zhang Jingxin Ding Tianqing Jia

We theoretically and experimentally demonstrate the up-conversion fluorescence control via resonance-mediated two-photon absorption in rare-earth ions by varying both the laser polarization and phase. We show that both the laser polarization and phase can control the up-conversion fluorescence and the up-conversion fluorescence intensity is decreased when the laser polarization changes from linear through elliptical to circular. We also show that the laser polarization will affect the control efficiency of the up-conversion fluorescence by varying the laser phase and the circular polarization will reduce the control efficiency. Furthermore, we suggest that the control efficiency by varying the laser polarization and the effect of the laser polarization on the control efficiency by varying the laser phase can be artificially manipulated by controlling the laser spectral bandwidth. This optical control method opens a new opportunity to control the up-conversion fluorescence of rare-earth ions, which may have significant impact on the related applications of rare-earth ions.

10.1038/srep07295

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Citations (20)

Femtosecond Fluorescence Spectroscopy and Its Applications in Life Science

Zhandong Tao Menghui Jia Jingxin Ding Sanjun Zhang Haifeng Pan

Frequency upconversion fluorescence spectroscopy can be widely used to study biological macromolecules' structures and dynamics which may be linked to their functions. With the developments of ultrafast laser technology and the updates of related optoelectronic devices, the presence of femtosecond laser especially makes the time resolu- tion of frequency upconversion down to femtosecond, which provides new opportunities to the studies in biology, che- mistry and medicine science. In this paper, the basic principle of upconversion technique is briefly reviewed. On the basis of a self-constructed femtosecond upconversion fluorescence spectroscopy experimental system, the key design features of the total system are discussed. Finally, a few applications of the upconversion technique in life science, es- pecially the fluorescence dynamics of proteins and DNA, are demonstrated.

Photon Upconversion

Femtochemistry

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Polarization control of intermediate state absorption in resonance-mediated multi-photon absorption process

Journal of Physics B Atomic Molecular and Optical Physics (2015)

Shuwu Xu Yunxia Huang Yunhua Yao Tianqing Jia Jingxin Ding

We theoretically and experimentally demonstrate the control of the intermediate state absorption in an (n + m) resonance-mediated multi-photon absorption process by the polarization-modulated femtosecond laser pulse. An analytical solution of the intermediate state absorption in a resonance-mediated multi-photon absorption process is obtained based on the time-dependent perturbation theory. Our theoretical results show that the control efficiency of the intermediate state absorption by the polarization modulation is independent of the laser intensity when the transition from the intermediate state to the final state is coupled by the single-photon absorption, but will be affected by the laser intensity when this transition is coupled by the non-resonant multi-photon absorption. These theoretical results are experimentally confirmed via a two-photon fluorescence control in (2 + 1) resonance-mediated three-photon absorption of Coumarin 480 dye and a single-photon fluorescence control in (1 + 2) resonance-mediated three-photon absorption of IR 125 dye.

Two-Photon Absorption

Intermediate state

Absorption cross section

10.1088/0953-4075/48/13/135402

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Citations (4)

Strong-Field Dissociative Double Ionization of Acetylene

Physical Review Letters (2014)

Xiaochun Gong Qiying Song Qinying Ji Haifeng Pan Jingxin Ding

We investigate dissociative double ionization of acetylene, one of the smallest organic molecules yet with a rich electronic structure, in strong laser fields by measuring two fragment ions and two electrons in coincidence. The two-body fragmentation channels are dominated by the removal of electrons from the lower-lying molecular orbitals rather than from the highest occupied one. The electron localization-assisted enhanced ionization mechanism plays a central role for the strong-field deprotonation ionization of acetylene by releasing the second electron from the up-field potential well of the hydrogen site at the internuclear distance near twice the equilibrium value of the C-H bond.

Double ionization

Fragmentation

Acetylene

10.1103/physrevlett.112.243001

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Citations (55)