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Igor Samartsev

age ~57

from Westborough, MA

Igor Samartsev Phones & Addresses

  • Westborough, MA
  • Shrewsbury, MA
  • Boston, MA
  • 3 Orchard Hill Dr, Westborough, MA 01581 • (508)3291349

Us Patents

  • High Power Single Mode Ytterbium Fiber Laser System With Single Mode Neodymium Fiber Pump Source

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  • US Patent:
    2013019, Aug 1, 2013
  • Filed:
    Jan 18, 2013
  • Appl. No.:
    13/745190
  • Inventors:
    Valentin Gapontsev - Worcester MA,
    Igor Samartsev - Westborough MA,
  • Assignee:
    IPG Photonics Corporation - Oxford MA
  • International Classification:
    H01S 3/067
    G02B 6/14
  • US Classification:
    372 6, 385 28
  • Abstract:
    A high power fiber laser system emitting a substantially diffraction limited beam with a Gaussian intensity profile includes a single mode (“SM”) neodymium fiber pump source outputting a SM pump light; a seed laser operative to emit a SM signal light at a wavelength greater than that of the pump light; a SM DWM receiving and multiplexing the SM pump and signal lights. The disclosed system further includes a booster fiber amplifier which is configured with a frustoconically-shaped ytterbium (“Yb”) doped core receiving the pump and signal lights and configured with a small diameter input end which supports only a SM and a large diameter output end which is capable of supporting the SM and high order modes (:HOM”). The booster further has a cladding surrounding and coextending with the core, the core being configured for having intensity profiles of respective SMs of pump and signal lights overlap one another so that an overlap integral substantially equals to one (1) along an entire length of the core. The SM of the light signal extracts substantially the entire energy from the pump mode leaving the HOMs without amplification necessary to affect a quality of the diffraction limited beam of the system in a MW peak power range and hundreds of watt average power range.
  • Method And Apparatus For Differentially Controlling Population Inversion In Gain Medium

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  • US Patent:
    2014005, Feb 27, 2014
  • Filed:
    Sep 6, 2013
  • Appl. No.:
    14/019751
  • Inventors:
    Sergey Maryashin - Burbach,
    Andre Unt - Burbach,
    Igor Samartsev - Westborough MA,
    Vldmimir Antonenko - Fryazino,
  • Assignee:
    IPG Photonics Corporation - Oxford MA
  • International Classification:
    H01S 3/11
  • US Classification:
    372 25
  • Abstract:
    A method and apparatus are operative to control the desired level of population inversion in a gain medium having an amplified spontaneous emission (ASE) spectrum which is characterized by distinct short- and long-wavelength regions. The control is realized by the apparatus configured to determine a relationship between the regions of the ASE spectrum represented by respective frequencies which are filtered by respective frequency discriminators. The apparatus includes a controller operative to process the filtered frequencies by determining a relationship between amplitudes of the respective filtered frequencies which represents a measured level of population inversion. Upon mismatch between the measured level and desired level of the population inversion, a control signal is coupled into a pulse generator or pump or both. In response, the pulse generator may output a pulse, or/and the pump may he completely shut down to lower the level of the measured inversion.
  • Method For Assembling High Power Fiber Laser System And Module Realizing The Method

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  • US Patent:
    2013002, Jan 31, 2013
  • Filed:
    Jul 29, 2011
  • Appl. No.:
    13/193768
  • Inventors:
    Igor Samartsev - Westborough MA,
    Victor Ilyashenko - Northborough MA,
    Davone Keovongmanysar - Oxford MA,
  • Assignee:
    IPG Photonics Corporation - Oxford MA
  • International Classification:
    H01S 3/067
    B32B 37/14
    B32B 37/12
  • US Classification:
    372 6, 156 60
  • Abstract:
    A method for arranging a high power fiber laser system includes spiraling an active fiber in a housing with a diameter of spiral gradually decreasing towards the center of th housing. The method further includes coupling the opposite free ends of the spiraled active fiber to respective passive fibers providing optical communication between the active fiber and discrete components. Thereafter, the passive fibers with the discrete components are arranged next to inner spirals of the active fiber.

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