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http://dx.doi.org/10.3807/JOSK.2009.13.1.146

Laser Beam Shaping Using Hollow Optical Fiber and Its Application in Laser Induced Thermal Printing  

Yi, Jong-Hoon (Department of Physics, Yeungnam University)
Lee, Kang-In (Department of Physics, Yeungnam University)
Park, Ill-Hyun (Department of Physics, Yeungnam University)
Kwon, Jin-Hyuk (Department of Physics, Yeungnam University)
Publication Information
Journal of the Optical Society of Korea / v.13, no.1, 2009 , pp. 146-151 More about this Journal
Abstract
A Gaussian beam of single mode fiber laser was changed into a ring-shaped pattern after it was transmitted through the hollow optical fiber. The ring-shaped beam was focused on a plane by an f-. lens and it was scanned by a Galvano-mirror. The spatial profile of laser energy incident on a plane had two peaks at both sides of the scanned linear track. The profile was compared with the result obtained when the Gaussian beam was dithered transversely by an acousto-optic modulator. It is found that hollow optical fiber beam shaper can replace acousto-optic beam dithering device which is employed in a laser induced thermal printing system.
Keywords
Beam shaping; Hollow optical fiber; Laser thermal printing;
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