Amplitude Modulator ALM0 pages
LASERS & MATERIAL PROCESSING I OPTICAL SYSTEMS I INDUSTRIAL METROLOGY I TRAFFIC SOLUTIONS I DEFENSE & CIVIL SYSTEMS
Amplitude Modulator ALM
Electro-optical light modulator based on liquid crystals
With the help of the ALM the light intensity or the
polarization state can be modulated without
mechanical moving parts.
By applying a control voltage to a twisted nematic liquid
crystal layer the polarization state of passing light is
altered.
By mounting the ALM between two polarizers or with
a single polarizer at the light output (if polarized light
is used!), a tunable amplitude attenuation of the light
throughput can be achieved.
Optoelectronic Systems
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