Concept of photonic hook scalpel generated by shaped fiber tip with asymmetric radiation. Issue 2 (11th November 2020)

• Record Type: Journal Article
• Authors: Minin, Igor V.; Minin, Oleg V.; Liu, Yan‐Yu; Tuchin, Valery V.; Liu, Cheng‐Yang
• Is Part Of: Journal of biophotonics. Volume 14:Issue 2(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-11-11
• Subjects: fiber tip -- laser surgery -- optical scalpel -- photonic hook; Photonics -- Periodicals; Optical materials -- Periodicals; Optics -- Periodicals; Medical instruments and apparatus -- Periodicals; 621.3605
• DOI: 10.1002/jbio.202000342
• Languages: English
• ISSNs: 1864-063X

Abstract

Abstract: 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. Abstract : The tip shape of optical fiber determines its function since it controls the light distribution pattern on a specific sample. 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. 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.