Display Settings:

Format

Send to:

Choose Destination
We are sorry, but NCBI web applications do not support your browser and may not function properly. More information
Opt Express. 2011 Feb 14;19(4):3440-8. doi: 10.1364/OE.19.003440.

Contact focusing multimodal microprobes for ultraprecise laser tissue surgery.

Author information

  • 1Department of Physics and Optical Science, Center for Optoelectronics and Optical Communications, University of North Carolina at Charlotte, NC 28223, USA.

Abstract

Focusing of multimodal beams by chains of dielectric microspheres assembled directly inside the cores of hollow waveguides is studied by using numerical ray tracing. The device designs are optimized for laser surgery in contact mode with strongly absorbing tissue. By analyzing a broad range of parameters it is demonstrated that chains formed by three or five spheres with a refractive index of 1.65-1.75 provide a two-fold improvement in spatial resolution over single spheres at the cost of 0.2-0.4 attenuation in peak intensity of the central focused beam. Potential applications include ultra precise laser ablation or coagulation in the eye and brain, cellular surgery, and the coupling of light into photonic nanostructures.

PMID:
21369166
[PubMed - indexed for MEDLINE]
PMCID:
PMC3368307
Free PMC Article

Images from this publication.See all images (4)Free text

Fig. 1
Fig. 2
Fig. 3
Fig. 4
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for PubMed Central
    Loading ...
    Write to the Help Desk