Electro-optical device and a wavelength selection method utilizing the same

An electro-optical device comprising:

• (a) a domain-patterned ferroelectric crystal structure with inverted domains;
• (b) an electrodes' arrangement on the surface of said structure connectable to a voltage source to selectively apply voltage to each of the electrodes;
• (c) at least one input port for directing at least one input beam onto the structure;
• and
• (d) a control unit operating the voltage source to provide the desired voltage applied to the electrodes, and selectively operating said at least one input port to affect at least one of the following:
• an angle of incidence of the input beam onto the structure, a shape of the input beam, and propagation of light components of different polarizations contained in the input beam.

An electro-optical device comprising:

• (a) a domain-patterned ferroelectric crystal structure with inverted domains;
• (b) an electrodes' arrangement on the surface of said structure connectable to a voltage source to selectively apply voltage to each of the electrodes;
• (c) an input port for directing an input beam onto the structure, said input port being operable to affect an angle of incidence of the input beam onto the structure so as to provide the input beam incidence onto the structure at an angle substantially satisfying the Bragg condition for a predetermined wavelength component of the input beam, and thereby cause deflection of said predetermined wavelength component from a direction of propagation of the input beam to a reflection output direction, while allowing propagation of the other wavelength components of the input beam in said direction of propagation of the input beam;
• and
• (d) a control unit operating the voltage source to apply voltage to the electrodes and operating said input port so as to provide the input beam incidence onto the structure at the angle substantially satisfying the Bragg condition for the predetermined wavelength component of the input beam.

An electro-optical device comprising:

• (a) a domain-patterned ferroelectric crystal structure with inverted domains;
• (b) an electrodes' arrangement on the surface of said structure connectable to a voltage source to selectively apply voltage to each of the electrodes;
• (c) an input port for directing an input beam onto the structure, said input port being operable to affect a shape of the input beam so as to provide a substantially elliptical shape of the input beam impinging onto the structure;
• and
• (d) a control unit operating the voltage source to apply voltage to the electrodes and operating said input port so as to provide the substantially elliptical shape of the input beam.