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Creators/Authors contains: "Ren, Jinhan"

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  1. ; ; (, Nanophotonics)
    Abstract Fluorescence microscopy has long been a valuable tool for biological and medical imaging. Control of optical parameters such as the amplitude, phase, polarization, and propagation angle of light gives fluorescence imaging great capabilities ranging from super-resolution imaging to long-term real-time observation of living organisms. In this review, we discuss current fluorescence imaging techniques in terms of the use of tailored or structured light for the sample illumination and fluorescence detection, providing a clear overview of their working principles and capabilities. 
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  2. ; ; ; ; ; (, 2018 IEEE Photonics Society Summer Topical Meeting Series)
    We demonstrate a microring laser generating vortex beams with topological charge. By implementing a chiral S-bend element inside the active ring and a second-order grating structure around the sidewall, this system could effectively down-convert the large order whispering gallery mode to on-demand OAM values. 
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  3. ; ; ; ; ; (, CLEO: QELS_Fundamental Science 2018)
    At resonance, mircoring resonators tend to support two counter-propagating degenerate modes. By incorporating S-bend chiral elements in each resonator, unidirectional single mode lasing below and above PT-symmetry breaking point is experimentally demonstrated. 
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  4. ; ; ; ; ; ; ; ; ; (, ACS Photonics)
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  5. ; ; ; ; ; ; (, Optics Express)
  6. ; ; ; ; ; ; ; (, 2018 IEEE Photonics Society Summer Topical Meeting Series)
    A multimode, chaotic, and broadband emission is an undesired characteristic of laser arrays which is an adverse effect of supermodes in coupled waveguides. Employing optical supersymmetry, we experimentally demonstrate single mode lasing in arrays of supersymmetric lasers where a superpatner array eliminates undesired lasing modes. 
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  7. ; ; ; ; ; ; ; (, Science)
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  8. ; ; ; ; ; ; ; ; (, CLEO: Science and Innovations 2018)
    Single-mode lasing is demonstrated in an electrically injected coupled microring arrangement at telecommunication wavelengths by exploiting the unique physics associated with parity-time-symmetry. 
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