Dr. Johan Stigwall Profile

Dr. Johan Stigwall

Photonics Engineer at Hexagon Technology Ctr GmbH

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Publications (3)

PROCEEDINGS ARTICLE | September 1, 2004

Experimental evaluation of an ultrafast free-space optical analog-to-digital conversion scheme using a tunable semiconductor laser

Proc. SPIE. 5466, Microwave and Terahertz Photonics

KEYWORDS: Signal to noise ratio, Reflectors, Tunable lasers, Diffractive optical elements, Modulation, Sensors, Semiconductor lasers, Free space optics, Analog electronics, Diffraction gratings

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PROCEEDINGS ARTICLE | February 6, 2004

Characterization of depolarizing fringing fields of a liquid crystal spatial light modulator for laser beam steering

Proc. SPIE. 5237, Optics in Atmospheric Propagation and Adaptive Systems VI

KEYWORDS: Diffraction, Beam steering, Finite-difference time-domain method, Phase modulation, Polarization, Electrodes, Spatial light modulators, Liquid crystals, Binary data, Diffraction gratings

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PROCEEDINGS ARTICLE | August 21, 2003

Laser beam steering and tracking using a liquid crystal spatial light modulator

Proc. SPIE. 5087, Laser Systems Technology

KEYWORDS: Diffraction, Beam splitters, Beam steering, Phase modulation, Sensors, Phase shift keying, CCD cameras, Spatial light modulators, Liquid crystals, Phase measurement

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