Abstract

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

Compact laser transmitter delivering a long-range infrared beam aligned with a monitoring visible beam

Hong-Shik Lee, Haeng-In Kim, and Sang-Shin Lee
Appl. Opt. 51(17) 3936-3940 (2012)

Single-element laser beam shaper for uniform flat-top profiles

S. Zhang, G. Neil, and M. Shinn
Opt. Express 11(16) 1942-1948 (2003)

Low speckle laser illuminated projection system with a vibrating diffractive beam shaper

Po-Hung Yao, Chieh-Hui Chen, and Cheng-Huan Chen
Opt. Express 20(15) 16552-16566 (2012)

Highly efficient refractive Gaussian-to-tophat beam shaper for compact terahertz imager

Roman Kleindienst, Lothar Moeller, and Stefan Sinzinger
Appl. Opt. 49(10) 1757-1763 (2010)

Micromechanics-based digitally controlled tunable optical beam shaper

Sarun Sumriddetchkajorn
Opt. Lett. 28(9) 737-739 (2003)