A beam homogenizer for a hollow-fiber-based, UV laser delivery system is proposed. A rectangular glass waveguide with an inner aluminum coating that has a 1-mm square cross section is attached at the output end of the circular-core hollow fiber with a 1-mm inner diameter. The rectangular waveguide generates a number of higher-order modes and results in a uniform top-hat profile. The configuration of the waveguide is designed by a ray-tracing technique so that both the low transmission loss and the high uniformity in the output beam are obtained. The fabricated waveguide shows a low loss of 0.4 dB, and the intensity variation coefficient is 7%. The output beam from the rectangular waveguide is expanded by a lens to the size larger than 10-mm square. It is also shown that the profile does not change with the bending condition.

© 2003 Optical Society of America

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

Related Journal Articles

• Flexible hollow waveguides for delivery of excimer-laser light (OL)
• Laser-to-fiber optical coupling scheme with a long working distance by use of thermally overexpanded fiber (AO)
• Whispering-gallery-bottle microcavities: the three-dimensional etalon (OL)
• Optical fiber microcoil resonators (OE)
• Fabrication and study of bent and coiled free silica nanowires: Self-coupling microloop optical interferometer (OE)

Related Conference Papers

• Fabrication of long-period fiber gratings with 157-nm F2 laser radiation
• Microfiber Photonics
• Metal-Based 1X2 Plastic Optical Fiber (POF) Splitter for Video over POF System Application
• Propagation of Whispering Gallery Modes Along the Miniature Optical Fiber Coils
• Suspended core polyethylene fiber for bio-sensing applications in the terahertz region
• Suspended core polyethylene fiber for bio-sensing applications in the terahertz region