Patents by Inventor Valentin Gapontsev

Valentin Gapontsev 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: 20140339209
    Abstract: The disclosure is a method and system for monitoring the condition of an optical protective component in a laser system associated with a data processor. In one embodiment, the method begins with directing light from the process head of a laser through the optical protective component onto a workpiece. A return light via the workpiece causes light signals coupled through the protective component and into to a fiber which extends proximate the protective component and thereafter flexibly to a sensor. The sensed signals allow monitoring the condition of the protective component during use. The method and system is operative for use with optical protective elements downstream of the process head.
    Type: Application
    Filed: May 17, 2013
    Publication date: November 20, 2014
    Applicant: IPG Photonics Corporation
    Inventors: Valentin Gapontsev, Michael Digiantomasso, Yuri Grapov
  • Publication number: 20140314106
    Abstract: A high power fiber laser system includes a booster winch is configured as a fiber amplifier extending over free space, pump source and laser head including a reflective element which receives pump light and reflects toward the output end of the booster in a counter signal-propagating direction. The booster is configured with concentric and coextending frustoconically shaped (“MM”) core and cladding around the core. The core includes a mode transition region expanding between small diameter SM input and large diameter MM output core ends and configured so that amplification of high order modes is substantially suppressed as a single mode (“SM”) signal light propagates from the input to output core ends. The laser head receives output ends of respective pump light delivery fibers and signal fiber, respectively. The pump source is structured with a plurality of independent sub pumps arranged around the booster.
    Type: Application
    Filed: March 6, 2014
    Publication date: October 23, 2014
    Applicant: IPG Photonics Corporation
    Inventors: Valentin Fomin, Anton Ferin, Mikhail Abramov, Igor Samartsev, Valentin Gapontsev
  • Publication number: 20140218788
    Abstract: A high power pump ultra bright low-noise source is configured with a multimode (“MM”) seed source outputting a MM smooth, low-noise signal light at a desired wavelength in a wavelength range between about 974 and 1030 nm, a MM Yb fiber wavelength converter operative to convert emission of a plurality of high power (“HP”) semiconductor laser diodes at a sub-pump wavelength ? sp to a pump output at the desired wavelength ??, wherein ??=????sp<0/1?sp. The Yb-doped MM wavelength converter is configured with noise levels substantially identical to those of the low-noise signal light, brightness (“B”) substantially equal to ?×B, wherein n is a number HP semiconductor laser diodes, and B is brightness of each HP laser diode, and output power (“Po”) substantially equal to nPd, wherein Pd is a power of each HP laser diode, and n is the number thereof.
    Type: Application
    Filed: August 18, 2011
    Publication date: August 7, 2014
    Applicant: IPG PHOTONICS CORPORATION
    Inventors: Valentin Gapontsev, Igor Samartsev
  • Patent number: 8582608
    Abstract: A twin fiber laser arrangement is configured with active and passive fibers supporting respective signal and pump lights and a reflective coating surrounding the fibers along a section of the arrangement. The passive fiber has regions covered by respective protective layer and coating-free regions alternating with the layer covered regions, wherein the reflective coating is configured to overlap the protective layer which shields the end of the reflective coating from high power pump light.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: November 12, 2013
    Assignee: IPG Photonics Corporation
    Inventors: Valentin Gapontsev, Vladimir Grigoriev, Volodia Sergueev, Ilia Zaytsev
  • Publication number: 20130195126
    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.
    Type: Application
    Filed: January 18, 2013
    Publication date: August 1, 2013
    Applicant: IPG Photonics Corporation
    Inventors: Valentin Gapontsev, Igor Samartsev
  • Publication number: 20130188242
    Abstract: A method for sum-frequency conversion of coherent radiation includes generating two linearly polarized waves which collinearly propagate in respective first and second non-coinciding planes at different first and second frequencies f1?/f2, respectively. The waves are further guided through an active crystal which rotates the waves at different angles ?1 and ?2 determined as ?1=?(f1)·L ?2=?(f2)·L, where L is a length of the active crystal, and ?(f1) and ?(f2) specific rotations of respective frequencies f1?/f2. Finally the rotated waves are incident on a non-linear crystal configured to sum frequency the wave to generate a third harmonic.
    Type: Application
    Filed: January 22, 2013
    Publication date: July 25, 2013
    Applicant: IPG Photonics Corporation
    Inventors: Valentin Gapontsev, Valentin Tartyshnyy, Oleg Vershinin, Boris Davidov, Dmitri Ouiianov
  • Patent number: 8254417
    Abstract: The present disclosure relates to a modular fiber laser system operative to controllably guide a beam which is launched from a feeding fiber into a process fiber so that the high-aperture component is coupled and guided in cladding of the process fiber, and a low-aperture component is coupled into the core of the fiber. The laser system further has a reflective element configured with light-reflecting and light-transmitting portions. The high-aperture component at least partially decouples from the cladding into the core so that the core radiates the high-aperture and low-aperture components. The high-aperture component is incident upon the light-reflecting portion and backreflected into the process fiber so that a sensor array, which is located between the feeding and process fibers, detects the reflected light.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: August 28, 2012
    Assignee: IPG Photonics Corporation
    Inventors: Valentin Gapontsev, Valentin Fomin, Alexander Dronov, Dimitri Yagodkin
  • Publication number: 20110305249
    Abstract: The present disclosure relates to a modular fiber laser system operative to controllably guide a beam which is launched from a feeding fiber into a process fiber so that the high-aperture component is coupled and guided in cladding of the process fiber, and a low-aperture component is coupled into the core of the fiber. The laser system further has a reflective element configured with light-reflecting and light-transmitting portions. The high-aperture component at least partially decouples from the cladding into the core so that the core radiates the high-aperture and low-aperture components. The high-aperture component is incident upon the light-reflecting portion and backreflected into the process fiber so that a sensor array, which is located between the feeding and process fibers, detects the reflected light.
    Type: Application
    Filed: June 14, 2010
    Publication date: December 15, 2011
    Applicant: IPG Photonics Corporation
    Inventors: Valentin Gapontsev, Valentin Fomin, Alexander Dronov, Dimitri Yagodkin
  • Publication number: 20110292499
    Abstract: A twin fiber laser arrangement is configured with active and passive fibers supporting respective signal and pump lights and a reflective coating surrounding the fibers along a section of the arrangement. The passive fiber has regions covered by respective protective layer and coating-free regions alternating with the layer covered regions, wherein the reflective coating is configured to overlap the protective layer which shields the end of the reflective coating from high power pump light.
    Type: Application
    Filed: May 27, 2010
    Publication date: December 1, 2011
    Applicant: IPG Photonics Corporation
    Inventors: Valentin Gapontsev, Igor Berishev, Nikolai Strougov, Vadim Chuyanov