Patents by Inventor Sergey A. Vasilyev

Sergey A. Vasilyev 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: 20210124236
    Abstract: An optical parametric device (OPD), which is selected from an optical parametric oscillator (OPO) or optical parametric generator (OPG), is configured with a nonlinear optical element (NOE) which converts an incoupled pump radiation at first frequency into output signal and idler radiations at one second frequency or different second frequencies, which is/are lower than the first frequency, by utilizing nonlinear interaction via a random quasi-phase matching process (RQPM-NOE). The NOE is made from a nonlinear optical material selected from optical ceramics, polycrystals, micro and nanocrystals, colloids of micro and nanocrystals, and composites of micro and nanocrystals in polymer or glassy matrices.
    Type: Application
    Filed: April 17, 2018
    Publication date: April 29, 2021
    Inventors: Konstantin VODOPYANOV, Sergey VASILYEV, Mikhail MIROV
  • Patent number: 10886690
    Abstract: The present invention provides systems and methods for optical frequency comb generation with self-generated optical harmonics in mode-locked lasers for detecting the carrier envelope offset frequency. The mode-locked laser outputs an optical frequency comb and a harmonic output. The harmonic output provides an optical heterodyne resulting in a detectable beat note. A carrier envelope offset frequency detector detects the beat note and generates an optical frequency comb signal. The signal can be used to stabilize the optical frequency comb output.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: January 5, 2021
    Assignee: IPG PHOTONICS CORPORATION
    Inventor: Sergey Vasilyev
  • Patent number: 10608401
    Abstract: A Kerr Mode Locked (“KLM”) laser is configured with a resonant cavity. The gain medium, selected from polycrystalline transition metal doped II-VI materials (“TM:II-VI), is cut at a normal angle of incidence and mounted in the resonant cavity so as to induce the KLM laser to emit a pulsed laser beam at a fundamental wavelength. The pulses of the emitted laser beam at the fundamental wavelength each vary within a 1.8-8 micron (“?m”) wavelength range, have a pulse duration equal to or longer than 30-35 femtosecond (“fs”) time range and an average output power within a mW to about 20 watts (“W”) power range. The disclosed resonant cavity is configured with a plurality of spaced apart reflectors, two of which flank and are spaced from the gain medium which is pumped to output a laser beam at a fundamental wavelength and its higher harmonic wavelengths. The gain medium is mounted on a translation mechanism operative to controllably displace the gain medium along a waist of the laser beam.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: March 31, 2020
    Assignee: IPG PHOTONICS CORPORATION
    Inventors: Sergey Vasilyev, Michael Mirov, Igor Moskalev
  • Publication number: 20200046077
    Abstract: A protective heel cover. The protective heel cover includes a base wherein the base has a straight front edge and a curved rear portion. The base has a side wall rising vertically therefrom. The side wall starts at one side of the straight front edge encircles around the curved rear portion and ends at the opposing side of the straight front edge. The base and the side wall are made from a protective material. There is a strap that is connected to the side wall. The strap will go across the top of a user's food securing the protective heel cover to the user's shoe heel.
    Type: Application
    Filed: August 13, 2019
    Publication date: February 13, 2020
    Inventors: Sergey Vasilyev, Oleksander Lychak
  • Publication number: 20190356103
    Abstract: The present invention provides systems and methods for optical frequency comb generation with self-generated optical harmonics in mode-locked lasers for detecting the carrier envelope offset frequency. The mode-locked laser outputs an optical frequency comb and a harmonic output. The harmonic output provides an optical heterodyne resulting in a detectable beat note. A carrier envelope offset frequency detector detects the beat note and generates an optical frequency comb signal. The signal can be used to stabilize the optical frequency comb output.
    Type: Application
    Filed: January 5, 2018
    Publication date: November 21, 2019
    Inventor: Sergey VASILYEV
  • Patent number: 10483709
    Abstract: The present invention provides systems and methods for producing short laser pulses that are amplified and spectrally broadened in a bulk gain media. The bulk material, having laser gain and nonlinear properties, is concurrently exposed to an optical pump input and a seed input, the pump power being sufficient to amplify and spectrally broaden the seed pulse.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: November 19, 2019
    Assignee: IPG PHOTONICS CORPORATION
    Inventors: Igor Moskalev, Sergey Vasilyev, Michael Mirov, Valentin Gapontsev
  • Patent number: 10216063
    Abstract: Systems and methods for spectrally broadening seed pulses with a single pass laser amplifier are disclosed. A bulk TM:II-VI polycrystalline material with combined gain and nonlinear characteristic provides passive (cold) spectral broadening of high power seed pulses. Continuous pumping provides more significant spectral broadening. In particular, pulsed pumping of TM:II-VI polycrystalline material (e.g. Cr2+:ZnS, Cr2+:ZnSe, and Cr2+:CdSe) is shown to provide significant spectral broadening to the super continuum generation SCG level. Pulse picking, pump sources, master oscillators and various optical components are described.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: February 26, 2019
    Assignee: IPG PHOTONICS CORPORATION
    Inventors: Sergey Vasilyev, Igor Moskalev, Michael Mirov, Valentin Gapontsev
  • Publication number: 20180278006
    Abstract: The present invention provides systems and methods for producing short laser pulses that are amplified and spectrally broadened in a bulk gain media. The bulk material, having laser gain and nonlinear properties, is concurrently exposed to an optical pump input and a seed input, the pump power being sufficient to amplify and spectrally broaden the seed pulse.
    Type: Application
    Filed: September 22, 2016
    Publication date: September 27, 2018
    Inventors: Igor MOSKALEV, Sergey VASILYEV, Michael MIROV, Valentin GAPONTSEV
  • Publication number: 20180113372
    Abstract: Systems and methods for spectrally broadening seed pulses with a single pass laser amplifier are disclosed. A bulk TM:II-VI polycrystalline material with combined gain and nonlinear characteristic provides passive (cold) spectral broadening of high power seed pulses. Continuous pumping provides more significant spectral broadening. In particular, pulsed pumping of TM:II-VI polycrystalline material (e.g. Cr2+:ZnS, Cr2+:ZnSe, and Cr2+:CdSe) is shown to provide significant spectral broadening to the super continuum generation SCG level. Pulse picking, pump sources, master oscillators and various optical components are described.
    Type: Application
    Filed: September 30, 2016
    Publication date: April 26, 2018
    Inventors: Sergey VASILYEV, Igor MOSKALEV, Michael MIROV, Valentin GAPONTSEV
  • Publication number: 20170018903
    Abstract: A Kerr Mode Locked (“KLM”) laser is configured with a resonant cavity. The gain medium, selected from polycrystalline transition metal doped II-VI materials (“TM:II-VI), is cut at a normal angle of incidence and mounted in the resonant cavity so as to induce the KLM laser to emit a pulsed laser beam at a fundamental wavelength. The pulses of the emitted laser beam at the fundamental wavelength each vary within a 1.8-8 micron (“?m”) wavelength range, have a pulse duration equal to or longer than 30-35 femtosecond (“fs”) time range and an average output power within a mW to about 20 watts (“W”) power range. The disclosed resonant cavity is configured with a plurality of spaced apart reflectors, two of which flank and are spaced from the gain medium which is pumped to output a laser beam at a fundamental wavelength and its higher harmonic wavelengths. The gain medium is mounted on a translation mechanism operative to controllably displace the gain medium along a waist of the laser beam.
    Type: Application
    Filed: September 30, 2016
    Publication date: January 19, 2017
    Inventors: Sergey Vasilyev, Michael Mirov, Igor Moskalev
  • Publication number: 20160294149
    Abstract: A short-pulse mode-locked laser is configured with at least two reflective elements defining a resonant cavity therebetween, a laser gain element (“GE”) placed inside the resonant cavity at normal incidence and selected from transition metal doped II-VI materials; and an optical pump emitting pulsed output to synchronously or quasi-synchronously pump the GE at a pulse repetition rate frequency fpump, the pump being configured so that the fpump substantially matches an inversed round trip time in the resonant cavity flaser:fpump?flaser=c/2L, where c is the speed of light, L is the length of the resonant cavity. The synchronous or quasi-synchronous pumping triggers and sustains a short-pulse emission of the laser with picosecond or femtosecond pulse durations.
    Type: Application
    Filed: March 30, 2016
    Publication date: October 6, 2016
    Inventors: Sergey VASILYEV, Michael MIROV, Valentin GAPONTSEV
  • Patent number: 9003534
    Abstract: Aspect of the invention are directed to antivirus scanning, by a proxy server, of data downloaded from the network onto a PC workstation. The antivirus scanning is optimized for each scan by selecting an algorithm for that scan based on a determined overall likelihood that the downloaded data contains malicious code. Determination of the overall likelihood is augmented by the strength, or confidence, of statistical data relating to malware screening of results of previous downloads having similar parameters to the instant download.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: April 7, 2015
    Assignee: Kaspersky Lab ZAO
    Inventors: Sergey A. Zubrilin, Alexander A. Stroykov, Sergey A. Vasilyev
  • Patent number: 8209740
    Abstract: Disclosed are systems, methods and computer program products for controlling access to a computer network. An example network access controller is configured to intercept data transmission to or from a computer and identify a network access policy associated with said computer. If there is no network access policy associated with said computer, the controller deploys on said computer an administration agent configured to collect configuration information from said computer and information about topology of said network. The controller determines a network access policy for said computer based on the collected information. The controller also activates antivirus software on said computer, to detect any malicious activity on said computer. If malicious activity is detected, the controller limits data transmissions to or from said computer until the malicious activity is eliminated by the antivirus software to prevent spread of the malicious activity to other computers in the network.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: June 26, 2012
    Assignee: Kaspersky Lab Zao
    Inventors: Andrey A. Kulaga, Alexander S. Tarasenko, Damir R. Shiyafetdinov, Sergey A. Vasilyev
  • Publication number: 20120110667
    Abstract: Aspect of the invention are directed to antivirus scanning, by a proxy server, of data downloaded from the network onto a PC workstation. The antivirus scanning is optimized for each scan by selecting an algorithm for that scan based on a determined overall likelihood that the downloaded data contains malicious code. Determination of the overall likelihood is augmented by the strength, or confidence, of statistical data relating to malware screening of results of previous downloads having similar parameters to the instant download.
    Type: Application
    Filed: March 31, 2011
    Publication date: May 3, 2012
    Inventors: Sergey A. Zubrilin, Alexander A. Stroykov, Sergey A. Vasilyev
  • Patent number: 8024449
    Abstract: Disclosed are systems, methods and computer program products for remote administration of a computer network. The system comprises an administration server for remotely managing a computer network. The server deploys administration agents on the computers in the network for performing various administrative tasks. In addition, the server selects a computer with the highest performance rating as a local administration proxy for the network. The server then transmits to the local administration proxy a control signal for performing one or more administrative tasks by administration agents deployed on the computers in the network. The server then establishes, through the local administration proxy, a connection with the administration agents for performing administrative tasks of the computers.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: September 20, 2011
    Assignee: Kapsersky Lab ZAO
    Inventors: Damir R. Shiyafetdinov, Andrey A. Kulaga, Sergey A. Vasilyev
  • Patent number: 8024450
    Abstract: Disclosed are systems, methods and computer program products for remote administration of a computer network. The system comprises an administration server for remotely managing a computer network. The server deploys administration agents on the computers in the network for performing various administrative tasks. In addition, the server selects a computer with the highest performance rating as a local administration proxy for the network. The server then transmits to the local administration proxy a control signal for performing one or more administrative tasks by administration agents deployed on the computers in the network. The server then establishes, through the local administration proxy, a connection with the administration agents for performing administrative tasks of the computers.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: September 20, 2011
    Assignee: Kaspersky Lab ZAO
    Inventors: Damir R. Shiyafetdinov, Andrey A. Kulaga, Sergey A. Vasilyev