Patents by Inventor Heping Zeng

Heping Zeng 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).

  • Publication number: 20210218216
    Abstract: The present disclosure relates to a gain optical fiber heat-dissipating device for high power ultra-fast laser, including a gain optical fiber and a heat-dissipating structure. The heat-dissipating structure includes a metal tube, a flexible heat-conducting layer and a water-cooling structure. The gain optical fiber is passed through the metal tube, and the flexible heat-conducting layer is provided between the metal tube and the gain optical fiber. The water-cooling structure is provided on the metal tube to reduce temperature of the gain optical fiber. The gain optical fiber heat-dissipating device according to the present disclosure can dissipate the heat through a water-cooling mode, and realize rapid heat dissipation, thus improving heat-dissipating efficiency.
    Type: Application
    Filed: January 8, 2021
    Publication date: July 15, 2021
    Inventors: Heping ZENG, Qingshan ZHANG, Mengyun HU, Shuai XU
  • Publication number: 20210175678
    Abstract: Provided are a time and frequency control method and system for optical comb. The method includes: controlling an optical comb measuring system to start and to generate an optical comb; obtaining monitoring data, wherein the monitoring data comprises a working temperature, a mode-locked frequency and a light pump power, wherein the mode-locked frequency comprises a repetition frequency and a carrier envelope phase locked at the end of starting the optical comb measuring system; determining whether an offset of the mode-locked frequency exceeds a self-feedback adjustment range of a hardware adjustment circuit; and in response to any of the repetition frequency and the carrier envelope phase exceeds the self-feedback adjustment range, adjusting the working temperature and the light pump power until the mode-locked frequency returns back into the self-feedback adjustment range.
    Type: Application
    Filed: December 5, 2020
    Publication date: June 10, 2021
    Inventors: Heping ZENG, Xiuqi WU, Shuang LI, Xuling SHEN
  • Publication number: 20210132401
    Abstract: A three-port silicon beam splitter chip includes an input waveguide, three output waveguides, and a coupling region disposed between the input waveguide and the output waveguides and being in a square shape. The input waveguide and the output waveguide have a same width K, where 490 nm<K<510 nm, the coupling region, the input waveguide and the output waveguide have a same thickness H, where 210 nm<H<230 nm, and the coupling region has a length L, where 1600 nm<L<2000 nm. The three-port silicon beam splitter chip of the present disclosure has a high integration degree and a small size, and is capable of improving the portability of the wavefront reconstruction device.
    Type: Application
    Filed: September 30, 2020
    Publication date: May 6, 2021
    Inventors: Heping ZENG, Jijun FENG, Xinyao WU
  • Publication number: 20210108963
    Abstract: The disclosure provides a super-resolution fast-scanning coherent Raman scattering imaging method. The method: using pump light and Stokes light; combining the pump light and the Stokes light to obtain combined light; expanding/collimating the combined light; the combined light after the expanding/collimating entering a galvanometer, passing through a group of a scanning lens/a tube lens and being focused on a back focal plane of a microobjective and incidenting into a biological sample, such that the biological sample is excited to emit anti-Stokes light; collecting the excited anti-Stokes light by a detector. This method is characterized by deflecting, at different angles, a single light spot focused on the microobjective through a diffractive optics group including DOE and a dispersive element, into a plurality of 1xN light spots to incident into the biological sample, such that the anti-Stokes light excited from smaller molecules and being condensed and filtered, is collected by the detector.
    Type: Application
    Filed: September 7, 2020
    Publication date: April 15, 2021
    Inventors: Heping ZENG, Kangwen YANG, Xu CHEN, Yue SHEN, Shikai ZHENG
  • Publication number: 20210072089
    Abstract: Provided are a method and a system for measuring a transient time width of an ultrashort pulse in real time. The method includes: performing an interaction of a laser pulse to be measured with a linear chirped pulse in a second-order non-linear medium, to generate a sum-frequency beam, wherein an intensity sag occurs in the chirped pulse after the interaction; performing a time spreading by a time stretching system on the chirped pulse with the intensity sag; detecting the spread chirped pulse with the spread intensity sag by a photoelectric detector, and measuring and recording a time width ?? of the spread intensity sag by an oscilloscope; and obtaining the transient time width ? of the laser pulse to be measured according to a formula of ?=??/M, where M is an amplification coefficient of the time stretching system.
    Type: Application
    Filed: June 8, 2020
    Publication date: March 11, 2021
    Inventors: Heping ZENG, Ming YAN, Yinqi WANG, Xiaoyue WANG
  • Publication number: 20210074585
    Abstract: The present disclosure provides a stealth dicing method and apparatus. With the method, the focusing element focuses the laser beam on the surface of material to be diced, and the dynamic-equilibrium plasma channel is formed in the material to be diced by means of self-focusing and defocusing effect of plasma generated by ionizing the material to be diced. The modified layer may be formed in the material to be diced throughout the plasma channel, so as to realize stealth dicing.
    Type: Application
    Filed: July 13, 2020
    Publication date: March 11, 2021
    Inventors: Heping ZENG, Shuai YUAN, Yingsheng DU, Hui XU, Yuan NIE, Yong WANG, Jin WANG, Jue YU, Yanying MA
  • Publication number: 20210032165
    Abstract: Disclosed is a method for preparing a carbon-reinforced metal-ceramic composite material, including: mixing raw materials of carbon, copper, zinc, titanium, copper oxide, calcium oxide and titanium dioxide, ball-milling the raw materials with a medium of ethanol to obtain a mixture, drying and milling the mixture to obtain a powder, sintering the powder with a laser having an irradiation power ranging from 100 to 600 W and an irradiation period of 3 min to 10 min to obtain a product, and rapidly cooling the product to allow a temperature of the product to be decreased to the room temperature within 5 min to obtain the carbon-reinforced metal-ceramic composite material.
    Type: Application
    Filed: June 11, 2020
    Publication date: February 4, 2021
    Inventors: Heping ZENG, Yanwei HUANG, Jiayang HE
  • Publication number: 20210032120
    Abstract: Disclosed are a method for preparing a ceramic material including a compound of a formula of A2BxOy and a ceramic material prepared by the method. The method includes: mixing a first oxide of AOm and a second oxide of BOn to obtain a mixture, ball-milling the mixture until a particle size of the mixture is not greater than 1 ?m with a medium selected from a group consisting of ethanol, acetone, deionized water and a combination thereof, to obtain a powder, drying the powder at a temperature in a range of 60 to 80° C., and sintering the powder with a laser irradiation having a laser wavelength of 980 nm, an irradiation power ranging from 50 to 1500 W and an irradiation period of 3 s to 8 min to obtain the ceramic material.
    Type: Application
    Filed: June 4, 2020
    Publication date: February 4, 2021
    Inventors: Heping ZENG, Yanwei HUANG, Jiayang HE
  • Publication number: 20210032166
    Abstract: Provided is a method for preparing a graphene-copper calcium titanate CCTO based ceramic composite dielectric material, which includes: dissolving metal ion sources in respective solvents to obtain respective solutions, and mixing the solutions evenly to obtain a precursor collosol of the CCTO based ceramic; allowing the precursor collosol of the CCTO based ceramic to stand for aging, followed by adding a graphene oxide dispersion to mix with the precursor collosol evenly, drying the resulting mixture to obtain dry precursor powders of the graphene-CCTO based ceramic, which are then grinded into fine powders, followed by irradiating by a low-power laser to obtain graphene-CCTO based ceramic composite powders; and compacting and molding the graphene-CCTO based ceramic composite powders, followed by catalytic synthesis with a high-power laser to obtain the graphene-CCTO based ceramic composite dielectric material.
    Type: Application
    Filed: June 24, 2020
    Publication date: February 4, 2021
    Inventors: Heping ZENG, Yanwei HUANG, Jiayang HE
  • Publication number: 20210032111
    Abstract: A method for preparing a graphene based composite wave-absorbing material includes: dissolving a water soluble barium salt and a water soluble iron salt into deionized water, respectively; mixing barium salt solution and iron salt solution according to a molar ratio of Ba:Fe of 1:12 to obtain a precursor solution; dispersing a graphene material in deionized water to form a graphene dispersion; adding citric acid, nitric acid and the graphene dispersion into the precursor solution in sequence to form a mixture solution; stirring the mixture solution at a temperature of 50 to 75° C. to obtain a sol; coating and drying aged sol on a substrate to obtain a coating layer; and sintering the coating layer by a laser irradiation.
    Type: Application
    Filed: July 14, 2020
    Publication date: February 4, 2021
    Inventors: Heping ZENG, Yanwei HUANG, Jiayang HE
  • Patent number: 6941072
    Abstract: The invention relates to wavelength division multiplexing (WDM) and demultiplexing of optical signals using optical filters in free space. To minimize dispersion, the present invention uses relatively small angles of incidence. To avoid the need for a large package, the present invention utilizes reflective prisms to steer the reflected beams to provide a lateral shift in the beam path that ensures that the necessary space is provided between the input/output ports. Devices including a single adjustable filter are disclosed, along with devices having a plurality of filters.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: September 6, 2005
    Assignee: JDS Uniphase Corporation
    Inventors: Li Wu, Zhanhua Guo, Jiwu Ling, Heping Zeng, Zhizhan Ruan, Jiayong Ma
  • Publication number: 20030007247
    Abstract: The invention provides a simple temperature insensitive optical retarder (waveplate) having a first and a second wedge shaped birefringent crystals, and a crystal mount comprising a first material having a low thermal expansion coefficient and a second material having a high thermal expansion coefficient, wherein the first and the second wedge shaped birefrigent crystals are attached onto the first and second materials, respectively, so that the total retardance by the first and second birefringent crystals at a first temperature is substantially the same as that at a second different temperature at a given wavelength. Advantageously, the temperature insensitive optical retarder is simple, easy to construct, can be used for any birefringent crystal and does not require the use of different birefringent crystals.
    Type: Application
    Filed: July 1, 2002
    Publication date: January 9, 2003
    Inventors: Li Wu, Jiwu Ling, Feng Liang, Heping Zeng
  • Publication number: 20020057868
    Abstract: The invention relates to wavelength division multiplexing (WDM) and demultiplexing of optical signals using optical filters in free space. To minimize dispersion, the present invention uses relatively small angles of incidence. To avoid the need for a large package, the present invention utilizes reflective prisms to steer the reflected beams to provide a lateral shift in the beam path that ensures that the necessary space is provided between the input/output ports. Devices including a single adjustable filter are disclosed, along with devices having a plurality of filters.
    Type: Application
    Filed: October 16, 2001
    Publication date: May 16, 2002
    Applicant: JDS Uniphase Corporation
    Inventors: Li Wu, Zhanhua Guo, Jiwu Ling, Heping Zeng, Zhizhan Ruan, Jiayong Ma