Patents by Inventor Schlomo Yitzchaik

Schlomo Yitzchaik has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and system for producing second order nonlinear optical effects using in-plane poled polymer films
    Patent number: 5434699
    Abstract: Method for the generation of second order nonlinear optical effects, including second harmonic generation, which comprises the steps of:i preparing a material in an xy planar film or xyz tridimensional form on a substrate and placing parallel electrodes on top of, inside, above or below said material, such that there is no protrusion of said electrodes into said material or a protrusion of at least one of said electrodes into said material is thinner than said material, wherein said material comprises at least one species of a hyperpolarizable component (a) and at least one species of a glass-forming organic material (b) providing a non-crystalline solid matrix in which molecules are not mobile, said components (a) and (b) being either distinct species or portions of a bifunctional molecule;ii subjecting said material of step (i) to an electric field essentially along the x-axis thereof; andiii directing a beam of light to impinge on and to be transmitted through said material treated as in step (ii), thus ge
    Type: Grant
    Filed: March 17, 1994
    Date of Patent: July 18, 1995
    Assignee: Yeda Research and Development Co., Ltd.
    Inventors: Garry Berkovic, Valeri Krongauz, Schlomo Yitzchaik, Shlomo Yitzchaik
  • Method and system for producing second order nonlinear optical effects
    Patent number: 5262890
    Abstract: In a system and method for generating second order nonlinear optical effects and in particular second order harmonic radiation (SHG), a beam of light is transmitted through and/or reflected from a substance which includes both at least one species selected from amorphous and glassy organic materials and at least one species of hyperpolarizable component, and which is in xy planar film or coating form or in light-transmissive 3-dimensional form and which substance is preferably subjected to a polarizing electric field, such that (a) when the substance is in the form of an xy planar film or coating, the field is applied in the plane of the film and the beam of light is caused to impinge thereon at angle other than normal to the xy plane, (b) when the substance is in 3-dimensional form, the field is applied along a line (an arbitrary x-axis) and the beam of light includes components polarized along at least one of the y- and z-axes; and (c) emergent SHG, which includes at least one component which is polarized p
    Type: Grant
    Filed: January 23, 1991
    Date of Patent: November 16, 1993
    Assignee: Yeda Research and Development Co., Ltd.
    Inventors: Garry Berkovic, Valeri Krongauz, Schlomo Yitzchaik