Concept of photonic hook scalpel generated by shaped fiber tip with asymmetric radiation

Igor V. Minin, Oleg V. Minin, Yan Yu Liu, Valery V. Tuchin, Cheng Yang Liu*

*Corresponding author for this work

Research output: Contribution to journalLetterpeer-review

12 Scopus citations


Structured light have made deep impacts on modern biotechnology and clinical practice, with numerous optical systems and lasers currently being used in medicine to treat disease. We demonstrate a new concept of fiber-based optical hook scalpel. The subwavelength photonic hook is obtained in the vicinity of a shaped fiber tip with asymmetric radiation. A 1550 nm continuous-wave source, commonly used for medical imaging, has been required. Photonic hook with a lateral feature size less than the half-wavelength is achieved using a hemispherical shaped fiber tip with metallic mask. This breakthrough is carried out in ambient air by using a 4-μm-diameter fiber with a shaped tip. A good correlation is observed between the computed intensity distribution of photonic hook and the tip sizes. Photonic hook generated with a shaped fiber tip, easier to manipulate, shows far-reaching benefits for potential applications such as ophthalmic laser surgery, super-resolution microscopy, photolithography and material processing.

Original languageEnglish
Article numbere202000342
JournalJournal of Biophotonics
Issue number2
StatePublished - Feb 2021


  • fiber tip
  • laser surgery
  • optical scalpel
  • photonic hook


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