Zilong Zhang

Area of research

Atomic and Molecular Physics, and Optics · Instrumentation

Research interest

Research topics from publications: Second harmonic generation of laser beams in transverse mode locking states; Evolution on spatial patterns of structured laser beams: from spontaneous organization to multiple transformations; Investigation on the Formation of Laser Transverse Pattern Possessing Optical Lattices; Three-dimensional imaging by compressed sensing based dual-frequency laser phase ranging; Novel dual type-II WO3/g-C3N4/Cu2O-Au heterojunction-based photoelectrochemical aptasensor for ultra-sensitive AFB1 detection in Astragalus matrix. Representative work: Nonlinear frequency conversion of structured beams has been of great interest recently. We present an intracavity second harmonic generation (SHG) of laser beams in transverse mode locking (TML) states with a specially designed sandwich such as a microchip laser. The intracavity nonlinear frequency conversion process of a laser beam in a TML state to its second harmonic is theoretically and experimentally investigated, considering different relative phase and weight parameters between the basic modes in the TML beam. Comparison between the far-field SHG beam patterns of fundamental frequency transverse modes in coherently locked and incoherently superposed states demonstrates that the SHG of Spatial patterns are a significant characteristic of lasers. The knowledge of spatial patterns of structured laser beams is rapidly expanding, along with the progress of studies on laser physics and technology. Particularly in the last decades, owing to the in-depth attention on structured light with multiple degrees of freedom, the research on spatial and spatiotemporal structures of laser beams has been promptly developed. Such beams have hatched various breakthroughs in many fields, including imaging, microscopy, metrology, communication, optical trapping, and quantum information processing. Here, we would like to provide an overview of the extensive research on several areas relevant to

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