Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Deep-Motion-Net: GNN-based volumetric liver shape reconstruction from single-view 2D projections.

International journal of computer assisted radiology and surgery·2026
Same author

Robust organ mapped dose: using multiple image registrations to identify deformation uncertainty in radiation dose mapping.

Physics in medicine and biology·2026
Same author

Explore Key Genes and Mechanisms Involved in Colon Cancer Progression Based on Bioinformatics Analysis.

Applied biochemistry and biotechnology·2024
Same author

Geometric evaluations of CT and MRI based deep learning segmentation for brain OARs in radiotherapy.

Physics in medicine and biology·2023
Same author

Brain Re-Irradiation Robustly Accounting for Previously Delivered Dose.

Cancers·2023
Same author

TIPE2 sensitizes breast cancer cells to paclitaxel by suppressing drug-induced autophagy and cancer stem cell properties.

Human cell·2023

Related Experiment Video

Updated: Jun 26, 2026

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
08:48

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Published on: November 22, 2019

Laser beam shaping using a single-mode fiber abrupt taper.

Zhaobing Tian1, Michael Nix, Scott S-H Yam

  • 1Department of Physics, Engineering Physics, and Astronomy, Queen's University, Kingston, Ontario, Canada. tianzhaobing@gmail.com

Optics Letters
|February 3, 2009
PubMed
Summary

A novel fiber optic device creates a flat-top beam profile with low loss and high efficiency. This cost-effective beam-shaping solution is fabricated using standard fiber optic tools, avoiding complex procedures.

More Related Videos

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
09:39

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

Published on: May 27, 2013

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Related Experiment Videos

Last Updated: Jun 26, 2026

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
08:48

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Published on: November 22, 2019

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
09:39

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

Published on: May 27, 2013

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Area of Science:

  • Optical Engineering
  • Fiber Optics
  • Nanophotonics

Background:

  • Gaussian beams are common in laser applications but often require modification for uniform intensity distribution.
  • Existing beam-shaping techniques can be complex, costly, or introduce significant insertion loss.
  • Developing efficient and low-cost methods for generating flat-top beams is crucial for various optical systems.

Purpose of the Study:

  • To develop and characterize a novel, cost-effective beam-shaping device for converting Gaussian beams into flat-top beams.
  • To evaluate the performance metrics of the new device, including insertion loss, conversion efficiency, and beam quality.
  • To demonstrate a fabrication method that utilizes standard fiber optic equipment.

Main Methods:

  • Fabrication of an abrupt taper device with specific dimensions (approx. 700 microm length, 40 microm waist).
  • Characterization of the device's optical performance, including insertion loss and output beam profile.
  • Measurement of beam parameters such as flat-top diameter, intensity variation, and divergence angle.
  • Comparison of conversion efficiency with existing long-period gratings (LPGs) based devices.

Main Results:

  • The abrupt taper device achieved an insertion loss of less than 3%.
  • A flat-top beam diameter of up to 900 microm was achieved with only 4% intensity variation.
  • The device exhibited a small half-divergence angle of 2.5 degrees.
  • Conversion efficiency was comparable to LPG-based devices, with significantly lower fabrication costs.
  • The device demonstrated no significant dependence on incident light polarization.

Conclusions:

  • A new, low-cost beam-shaping device using an abrupt taper has been successfully realized.
  • The device efficiently converts Gaussian beams to flat-top beams with excellent uniformity and low divergence.
  • Fabrication using a fusion splicer and standard fiber optic components offers a practical and economical alternative to photolithographic methods.