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US 2008/0165408 A1Published application
Method and Device For Modifying the Polarization State of Light
OwnerHannelore Kopta-Didosyan, Karina Gloukharevainventors
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OwnerHannelore Kopta-Didosyan, Karina Gloukharevainventors
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A method for modifying the polarization state of light with a magnetically uniaxial crystal which initially has a specific multidomain structure, wherein light enters via predefined areas of the crystal, and wherein a magnetic field pulse having a magnetic intensity H1 is applied to the crystal (1), wherein the crystal (1) is transformed into a reversible monodomain state. In order to obtain an enlargement of the useful aperture, while at the same time keeping switching and response times to a minimum, a retention magnetic field of transition of the crystal (1) into a reversible monodomain state, wherein the magnetic field intensity H2 is lower than the magnetic field intensity H1 and the reversible monodomain state is maintained.
A method for modifying the polarization state of light with a magnetic uniaxial crystal which initially has a specific multidomain structure wherein light enters through predefined areas of the crystal, wherein a magnetic field pulse having a magnetic intensity H1 is applied to the crystal (1) and wherein the crystal (1) is transformed into a reversible monodomain state, characterized in that a retention magnetic field of the same polarity and having a magnetic field intensity H2 is applied to the crystal (1) after transition of the crystal (1) into a reversible monodomain state, wherein the magnetic intensity H2 is lower than the magnetic field intensity H1 and the reversible monodomain state is maintained.
Dependencies are inferred from the claim text.