Patents by Inventor Jianjun Xu

Jianjun Xu 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 for producing non-linear optical organic crystal film
    Publication number: 20040033038
    Abstract: Methods for fabricating a non-linear optical (NLO) film and a NLO film structure produced thereby are provided. The methods include depositing an alignment layer material on at least one surface of a substrate, aligning the molecules of the alignment layer material in a substantially uniaxial direction, and depositing a NLO film on the alignment layer material. The methods may be advantageous in that they tend to produce NLO films having relatively strong NLO properties. The methods may be further advantageous in that they are relatively simple and may be applied to a wide range of organic NLO materials.
    Type: Application
    Filed: June 9, 2003
    Publication date: February 19, 2004
    Inventors: Jianjun Xu, Bunsen Fan
  • Method for producing non-linear optical organic crystal film
    Patent number: 6577798
    Abstract: Methods for fabricating a non-linear optical (NLO) film and a NLO film structure produced thereby are provided. The methods include depositing an alignment layer material on at least one surface of a substrate, aligning the molecules of the alignment layer material in a substantially uniaxial direction, and depositing a NLO film on the alignment layer material. The methods may be advantageous in that they tend to produce NLO films having relatively strong NLO properties. The methods may be further advantageous in that they are relatively simple and may be applied to a wide range of organic NLO materials.
    Type: Grant
    Filed: July 12, 2001
    Date of Patent: June 10, 2003
    Assignee: Reveo, Inc.
    Inventors: Jianjun Xu, Bunsen Fan
  • Method for producing non-linear optical organic crystal film
    Publication number: 20020041427
    Abstract: Methods for fabricating a non-linear optical (NLO) film and a NLO film structure produced thereby are provided. The methods include depositing an alignment layer material on at least one surface of a substrate, aligning the molecules of the alignment layer material in a substantially uniaxial direction, and depositing a NLO film on the alignment layer material. The methods may be advantageous in that they tend to produce NLO films having relatively strong NLO properties. The methods may be further advantageous in that they are relatively simple and may be applied to a wide range of organic NLO materials.
    Type: Application
    Filed: July 12, 2001
    Publication date: April 11, 2002
    Inventors: Jianjun Xu, Bunsen Fan
  • Composite nonlinear optical film, method of producing the same and applications of the same
    Patent number: 6303056
    Abstract: A method is provided for fabricating composite nonlinear optical (NLO) organic films that are suited for use in NLO device applications. The highly NLO properties of these films arise from the vector alignment of ‘guest’ NLO molecules in a self-ordered nano-structured liquid crystal ‘host’ film. Field-poling is used to remove the centro-symmetry. The ‘guest’ concentration is increased by film processing to incorporate oriented nonlinear nano-crystallites to increase nonlinearity. NLO devices based on such films are of low cost and permit fast switching in a compact device format.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: October 16, 2001
    Inventors: Bunsen Fan, Jianjun Xu