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1Resolution enhancement of digital holographic microscopy via synthetic aperture:a review显示文摘Digital holographic microscopy(DHM),which combines digital holography with optical microscopy,is a wide field,minimally invasive quantitative phase microscopy(QPM)approach for measuring the 3D shape or the inner structure of transparent and translucent samples.However,limited by diffraction,the spatial resolution of conventional DHM is relatively low and incompatible with a wide field of view(FOV)owing to the spatial bandwidth product(SBP)limit of the imaging systems.During the past decades,many efforts have been made to enhance the spatial resolution of DHM while preserving a large FOV by trading with unused degrees of freedom.Illumination modulation techniques,such as oblique illumination,structured illumination,and speckle illumination,can enhance the resolution by adding more high-frequency information to the recording system.Resolution enhancement is also achieved by extrapolation of a hologram or by synthesizing a larger hologram by scanning the sample,the camera,or inserting a diffraction grating between the sample and the camera.For on-chip DHM,spatial resolution is achieved using pixel super-resolution techniques.In this paper,we review various resolution enhancement approaches in DHM and discuss the advantages and disadvantages of these approaches.It is our hope that this review will contribute to advancements in DHM and its practical applications in many fields.Peng Gao Caojin Yuan 2022Light(Advanced Manufacturing)2022,3,1:7
2High efficiency generation of tunable ellipse perfect vector beams显示文摘We present a highly efficient method of generating and shaping ellipse perfect vector beams (EPVBs) with a prescribed ellipse intensity profile and continuously variant linear polarization state. The scheme is based on the coaxial superposition of two orthogonally polarized ellipse laser beams of controllable phase vortex serving as the base vector components. The phase-only computer-generated hologram is specifically designed by means of a modified iteration algorithm involving a complex amplitude constraint, which is able to generate an EPVB with high diffraction efficiency in the vector optical field generator. We experimentally demonstrate that the efficiency of generating the EPVB has a notable improvement from 1.83% in the conventional complex amplitude modulation based technique to 11.1% in our method. We also discuss and demonstrate the simultaneous shaping of multiple EPVBs with independent tunable ellipticity and polarization vortex in both transversal (2D) and axial (3D) focusing structures, proving potentials in a variety of polarization-mediated applications such as trapping and transportation of particles in more complex geometric circumstances.LIN LI CHENLIANG CHANG CAOJIN YUAN SHAOTONG FENG SHOUPING NIE ZHI-CHENG REN HUI-TIAN WANG JIANPING DING 2018Photonics Research2018,6,12:5
3Inaccuracy of doppler echocardiographic estimates of pulmonary artery pressures in adult atrial septal defect patients with pulmonary arterial hypertension显示文摘Zhang Caojin Huang Tao Huang Xinsheng Huang Yigao Chen Jimei Chen Jiyan Wu Shulin Zhuang Jian 2014Chinese Medical Journal2014,,19:5
4Effects of low doses of aerosolized iloprost combined with tadalafil in treatment of adult congenital heart disease with severe pulmonary arterial hypertension显示文摘Pulmonary arterial hypertension (PAH) is a common and serious complication of congenital heart disease (CHD).Many studies have confirmed that the prostacyclin analogues,5-phosphodiesterase (PDE-5) inhibitors,and endothelin receptor antagonists,were safe and effective in the treatment for PAH due to CHD.1,2 But whether the combination of targeted PAH therapy drugs provides similar synergistic effects is still controversial.1,2 Therefore,we investigated whether adult patients with severe PAH secondary to CHD would benefit from iloprost combined with low-dose tadalafil.Zhang Caojin Huang Yigao Huang Tao Xia Chunli Huang Xinsheng Zhang Guolin Chen Jimei Chen Jiyan Zhuang Jian 2014Chinese Medical Journal2014,,5:3
5Wavefront reconstruction through a paraxial optical system in color digital holography显示文摘Junchang Li Caojin Yuan Qinghe Song Jinbing Gui Yuli Lou 2013Optics Communications2013,,:1
6Angular multiplexing in pulsed digital holography for aperture synthesis显示文摘Yuan Caojin Zhai Hongchen Liu Haitao 2008Opt Lett2008,33,20:1
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