Amplitude apodizers encoded onto Fresnel lenses implemented on a phase-only spatial light modulator

A.MÁRQUEZ; CLAUDIO IEMMI; J.C.ESCALERA; J.CAMPOS; S.LEDESMA; J.A.DAVIS; M.J. YZUEL

APPLIED OPTICS

Optical Society of America

Año: 2001 vol. 40 p. 2316 - 2322

0003-6935

We show that both a lens and a nonuniform amplitude transmission filter can be encoded simultaneously onto a twisted nematic liquid-crystal spatial light modulator ~SLM! working in the phase-only mode. The inherent equivalent apodization that is due to the pixelated structure of the SLM is compensated for. In addition, different types of nonuniform transmission pupil such as transverse apodizing, transverse hyperresolving, and axial hyperresolving ~multifocusing! filters are implemented. The excellent agreement between numerical and experimental results shows the capability of this method to encode amplitude apodizers on a phase-only SLM.~SLM! working in the phase-only mode. The inherent equivalent apodization that is due to the pixelated structure of the SLM is compensated for. In addition, different types of nonuniform transmission pupil such as transverse apodizing, transverse hyperresolving, and axial hyperresolving ~multifocusing! filters are implemented. The excellent agreement between numerical and experimental results shows the capability of this method to encode amplitude apodizers on a phase-only SLM.~multifocusing! filters are implemented. The excellent agreement between numerical and experimental results shows the capability of this method to encode amplitude apodizers on a phase-only SLM.