A portable infrared laser transmitter delivering a highly uniform detectable beam was demonstrated. It incorporates a flexible beam shaper, comprising a perforated diffuser sheet in conjunction with a pinhole. The beam shaper plays the prominent role of flexibly tailoring the incoming light via both scattering and diffraction, in order to equalize the effective beam width over a long distance. The intensity profile of a generated beam was practically observed, demonstrating that a substantially uniform beam of 70-cm width was achieved for a given threshold detection level, with an average deviation of 6% over a range of 600 m.
© 2013 Optical Society of Korea
(120.1680) Instrumentation, measurement, and metrology : Collimation
(140.3300) Lasers and laser optics : Laser beam shaping
(220.1140) Optical design and fabrication : Alignment
(230.1980) Optical devices : Diffusers
(060.2605) Fiber optics and optical communications : Free-space optical communication
Original Manuscript: October 16, 2013
Manuscript Accepted: November 12, 2013
Published: December 25, 2013
Wenjing Yue, Haeng-Jung Kim, and Sang-Shin Lee, "Portable Infrared Laser Transmitter Based on a Beam Shaper Enabling a Highly Uniform Detectable Beam Width," J. Opt. Soc. Korea 17, 486-490 (2013)
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