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KE Cheng, ZHU Bo-yuan, SHU Ling-yun, LIAO Sai, LIANG Meng-ting. Averaged intensity and spectral shift of partially coherent chirped optical coherence vortex lattices in biological tissue turbulence[J]. Chinese Optics. doi: 10.37188/CO.EN.2021-0010
Citation: KE Cheng, ZHU Bo-yuan, SHU Ling-yun, LIAO Sai, LIANG Meng-ting. Averaged intensity and spectral shift of partially coherent chirped optical coherence vortex lattices in biological tissue turbulence[J]. Chinese Optics. doi: 10.37188/CO.EN.2021-0010

Averaged intensity and spectral shift of partially coherent chirped optical coherence vortex lattices in biological tissue turbulence

doi: 10.37188/CO.EN.2021-0010
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  • Author Bio:

    Cheng Ke (1979—), Ph.D, Professor, College of Optoelectronic Engineering, Chengdu University of Information Technology. His research interests are on propagation and control of High-Power Lasers. E-mail: ck@cuit.edu.cn

  • Corresponding author: ck@cuit.edu.cn
  • Accepted Date: 2021-11-16
  • Available Online: 2021-11-16
  • Averaged intensity and spectral shift of partially coherent chirped optical coherence vortex lattices (PCCOCVLs) in biological tissue turbulence are investigated, where optical lattice structures in monochromatic optical field and spectral rapid transitions in polychromatic optical field are stressed. It is found that the beam profile evolves from annular structure with vortex core into a periodic array of lobes with dark zone, and it finally present a Gaussian-like pattern in biological tissue. Although lattice parameter modulates beam profile, it cannot affect spectral behavior in biological tissue turbulence. The analysis of spectral shift also shows that a smaller distance is beneficial to spectral rapid transition, where the transverse coordinate decreases with an increase of chirp parameter and a decrease of pulse duration. The accumulated turbulences in a longer distance can suppress not only spectral transition, but spectral shift. The reduction of spectral shift is accompanied by a stronger biological tissue turbulence. The results have the application possibility in image recognition, medical device and noninvasive optical diagnose in biological tissue.
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