Patents by Inventor Alexey Avdokhin
Alexey Avdokhin 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).
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Patent number: 11975405Abstract: A multiple wavelength laser processing system is configured with a multiple wavelength laser source for generating a multiple wavelength coaxial laser processing beam. The laser processing system further includes a multiple wavelength optical system to deliver the coaxial laser processing beam to a laser-material interaction zone on the surface of a workpiece such that each of the a first and a second laser wavelengths in the processing beam impinge at least a portion of the interaction zone as respective first and second concentric laser spots. The multiple wavelength optical system includes a multiple wavelength beam collimator, a configurable chromatic optic, and a laser processing focus lens, wherein the configurable chromatic optic provides an adjustment to the relative focus distance of the first and second laser wavelengths.Type: GrantFiled: November 20, 2018Date of Patent: May 7, 2024Assignee: IPG PHOTONICS CORPORATIONInventors: Pancho Tzankov, Jonathan Ehrmann, Jeffrey Kmetec, Alexey Avdokhin, Andrei Babushkin
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Publication number: 20240136783Abstract: A laser system is configured with at least one light amplifying device sequentially outputting a light signal at first and at least one additional operating wavelengths over respective time intervals. Each time interval is shorter than the predetermined lifespan of the light amplifying device. The total useful life of the light amplifying device, operating at a plurality of wavelengths, is 3-10 times longer than the predetermined lifespan.Type: ApplicationFiled: June 7, 2022Publication date: April 25, 2024Applicant: IPG PHOTONICS CORPORATIONInventors: Alexey Avdokhin, Nikolai Platonov, Pankaj Kadwani, Jimyung Kim
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Publication number: 20230307882Abstract: A laser head for a high power fiber laser system has a 5 to 10 mm high housing which is provided with a bottom. The housing encloses an input collimator assembly which collimates a single mode pump light at a fundamental frequency and maximum power of 2 kW. The housing further encases a multi-cascaded nonlinear frequency converter receiving the collimated pump light so as to convert the fundamental frequency into a higher harmonic thereof, wherein converted light at the higher frequency has a maximum power of 1 kW. Enclosed in the housing are electronic and light guiding optical components mounted in the housing. The bottom of the housing is an electro-optical printed circuit board (EO PCB) which directly supports the input collimator assembly, multi-cascaded nonlinear frequency converter, electronic and optical components at respective designated locations.Type: ApplicationFiled: August 23, 2021Publication date: September 28, 2023Applicant: IPG PHOTONICS CORPORATIONInventors: Alexey AVDOKHIN, Andreas VAUPEL, Tetsuo OHARA, Kriti CHARAN, Jhih-An YANG
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Patent number: 11433483Abstract: A multiple wavelength laser processing system is configured with a multiple wavelength laser source for generating a multiple wavelength coaxial laser processing beam. The laser processing system further includes a multiple wavelength optical system to deliver the coaxial laser processing beam to a laser-material interaction zone on the surface of a workpiece such that each of the first and a second laser wavelengths in the processing beam impinge at least a portion of the interaction zone as respective first and second concentric laser spots. The multiple wavelength optical system includes a multiple wavelength beam collimator, a configurable chromatic optic, and a laser processing focus lens, wherein the configurable chromatic optic provides an adjustment to the relative focus distance of the first and second laser wavelengths.Type: GrantFiled: November 20, 2017Date of Patent: September 6, 2022Assignee: IPG PHOTONICS CORPORATIONInventors: Alexey Avdokhin, Pancho Tzankov, Andrei Babushkin, Jonathan Ehrmann, Jeffrey Kmetec
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Publication number: 20220149579Abstract: A laser system and method. In one example, the laser system includes an optical pulse stretcher configured to stretch pulse durations of an input train of input pulses to produce a train of stretched laser pulses, a pulse replicator module configured to increase a pulse repetition rate of the train of stretched laser pulses to produce a modified pulse train of laser light, a fiber power amplifier configured to amplify the modified pulse train to produce amplified laser pulses, and a pulse compressor that temporally compresses the amplified laser pulses to produce amplified and compressed laser pulses. The system may further include a nonlinear frequency conversion stage comprising at least one nonlinear crystal.Type: ApplicationFiled: January 31, 2020Publication date: May 12, 2022Applicant: IPG PHOTONICS CORPORATIONInventors: Alex YUSIM, Igor SAMARTSEV, Manuel J. LEONARDO, Vadim SMIRNOV, Pankaj KADWANI, Alexey AVDOKHIN, Andreas VAUPEL
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Publication number: 20200384572Abstract: A multiple wavelength laser processing system is configured with a multiple wavelength laser source for generating a multiple wavelength coaxial laser processing beam. The laser processing system further includes a multiple wavelength optical system to deliver the coaxial laser processing beam to a laser-material interaction zone on the surface of a workpiece such that each of the a first and a second laser wavelengths in the processing beam impinge at least a portion of the interaction zone as respective first and second concentric laser spots. The multiple wavelength optical system includes a multiple wavelength beam collimator, a configurable chromatic optic, and a laser processing focus lens, wherein the configurable chromatic optic provides an adjustment to the relative focus distance of the first and second laser wavelengths.Type: ApplicationFiled: November 20, 2018Publication date: December 10, 2020Inventors: Pancho TZANKOV, Jonathan EHRMANN, Jeffrey KMETEC, Alexey AVDOKHIN, Andrei BABUSHKIN
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Patent number: 10520790Abstract: A single-mode (SM) Green fiber laser is configured to operate in a Green spectral range in a continuous-wave (CW) or quasi-continuous-wave (QCW) mode. The Green laser is configured with a pump source, outputting narrow-linewidth pump light at a fundamental wavelength in one (1) micrometer spectral range, and a single-pass second harmonic generator (SHG), such as a nonlinear LBO crystal, frequency doubling the pump light to output Green light at a signal wavelength. The pump light source is configured to have a MOPFA configuration with a SM seed which emits the SM pump light with a linewidth narrower than 0.2 nm, and at least one ytterbium (“Yb”) fiber amplifier receiving and amplifying the SM pump light at the fundamental wavelength while maintaining the linewidth narrower than 0.2 nm. The SM Green fiber laser operates with a wall plug efficiency between 15% and 30% in a 510-540 nm signal wavelength range and a power range between about 50 W and kW-levels.Type: GrantFiled: January 6, 2015Date of Patent: December 31, 2019Assignee: IPG PHOTONICS CORPORATIONInventors: Valentin Gapontsev, Igor Samartsev, Alexey Avdokhin
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Publication number: 20190329357Abstract: A multiple wavelength laser processing system is configured with a multiple wavelength laser source for generating a multiple wavelength coaxial laser processing beam. The laser processing system further includes a multiple wavelength optical system to deliver the coaxial laser processing beam to a laser-material interaction zone on the surface of a workpiece such that each of the first and a second laser wavelengths in the processing beam impinge at least a portion of the interaction zone as respective first and second concentric laser spots. The multiple wavelength optical system includes a multiple wavelength beam collimator, a configurable chromatic optic, and a laser processing focus lens, wherein the configurable chromatic optic provides an adjustment to the relative focus distance of the first and second laser wavelengths.Type: ApplicationFiled: November 20, 2017Publication date: October 31, 2019Inventors: Alexey AVDOKHIN, Pancho TZANKOV, Andrei BABUSHKIN, Jonathan EHRMANN, Jeffrey KMETEC
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Patent number: 10409148Abstract: A high dynamic range projector (HDRP) is configured with at least one spatial light modulator having red, green and blue digital light projector (DPL) chips, a light laser source including red, green and blue (RGB) light laser systems which are operative to illuminate respective DLP chips; and a central processing unit (CPU) coupled to the DLP engines and respective RGB light laser systems, wherein the CPU is operative to determine an optimal average power of each of the RGB light laser systems at a frame rate based on a desired contrast ratio.Type: GrantFiled: November 7, 2017Date of Patent: September 10, 2019Assignee: IPG PHOTONICS CORPORATIONInventors: Oleg Shkurikhin, Alexey Avdokhin, Andrei Babushkin, Yuri Erokhin
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Publication number: 20190163032Abstract: A single-mode (SM) Green fiber laser is configured to operate in a Green spectral range in a continuous-wave (CW) or quasi-continuous-wave (QCW) mode. The Green laser is configured with a pump source, outputting narrow-linewidth pump light at a fundamental wavelength in one (1) micrometer spectral range, and a single-pass second harmonic generator (SHG), such as a nonlinear LBO crystal, frequency doubling the pump light to output Green light at a signal wavelength. The pump light source is configured to have a MOPFA configuration with a SM seed which emits the SM pump light with a linewidth narrower than 0.2 nm, and at least one ytterbium (“Yb”) fiber amplifier receiving and amplifying the SM pump light at the fundamental wavelength while maintaining the linewidth narrower than 0.2 nm. The SM Green fiber laser operates with a wall plug efficiency between 15% and 30% in a 510-540 nm signal wavelength range and a power range between about 50 W and kW-levels.Type: ApplicationFiled: January 6, 2015Publication date: May 30, 2019Inventors: Valentin Gapontsev, Igor SAMARTSEV, Alexey AVDOKHIN
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Patent number: 10209604Abstract: A frequency converter for converting a single mode input beam at a fundamental frequency to an output beam at a converted frequency is configured with a plurality of spaced optical components defining a resonant cavity. The optical components shape the input beam with at least one beam waist in the cavity. The frequency converter further includes a non-linear crystal located within the cavity in either a divergent beam with a Rayleigh range smaller than a cavity round trip length so that a center of the crystal is spaced from the beam waist along a beam path, or in a collimated beam with a Rayleigh range greater than the cavity round trip length.Type: GrantFiled: April 15, 2015Date of Patent: February 19, 2019Assignee: IPG PHOTONICS CORPORATIONInventors: Alexey Avdokhin, Oleksiy Andrusyak
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Patent number: 10170886Abstract: An RGB light source for a luminaire projector system includes Red, Green and Blue lasers each outputting a randomly polarized (RP) single mode (SM) light with at least a 4 nm spectral linewidth. The Green laser has a MOPFA-structured pump which outputs a pulsed pump beam at a fundamental wavelength in a 1 ?m wavelength range and further includes a SHG. The SHG includes an LBO nonlinear crystal receiving the pulsed pump beam and outputting a train of pulses of BB Green light. The Red laser is configured with a QCW fiber laser pump and a frequency converter with an LBO nonlinear crystal outputting a train of pulses of red light in a 6xx nm wavelength range.Type: GrantFiled: September 16, 2015Date of Patent: January 1, 2019Assignee: IPG PHOTONICS CORPORATIONInventors: Manuel Leonardo, Igor Samartsev, Alexey Avdokhin, Gregory Keaton
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Publication number: 20180233878Abstract: An RGB light source for a luminaire projector system includes Red, Green and Blue lasers each outputting a randomly polarized (RP) single mode (SM) light with at least a 4 nm spectral linewidth. The Green laser has a MOPFA-structured pump which outputs a pulsed pump beam at a fundamental wavelength in a 1 ?m wavelength range and further includes a SHG. The SHG includes an LBO nonlinear crystal receiving the pulsed pump beam and outputting a train of pulses of BB Green light. The Red laser is configured with a QCW fiber laser pump and a frequency converter with an LBO nonlinear crystal outputting a train of pulses of red light in a 6xx nm wavelength range.Type: ApplicationFiled: September 16, 2015Publication date: August 16, 2018Inventors: Manuel LEONARDO, Igor SAMARTSEV, Alexey AVDOKHIN, Gregory KEATON
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Publication number: 20180203339Abstract: A high dynamic range projector (HDRP) is configured with at least one spatial light modulator having red, green and blue digital light projector (DPL) chips, a light laser source including red, green and blue (RGB) light laser systems which are operative to illuminate respective DLP chips; and a central processing unit (CPU) coupled to the DLP engines and respective RGB light laser systems, wherein the CPU is operative to determine an optimal average power of each of the RGB light laser systems at a frame rate based on a desired contrast ratio.Type: ApplicationFiled: November 7, 2017Publication date: July 19, 2018Inventors: Oleg SHKURIKHIN, Alexey AVDOKHIN, Andrei BABUSHKIN, Yuri EROKHIN
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Patent number: 10008819Abstract: A broad line red light generator is configured with a single mode (SM) pulsed ytterbium (“Yb”) fiber laser pump source outputting pump light in a fundamental mode (“FM”) at a pump wavelength which is selected from a 1030-1120 nm wavelength range. The disclosed generator further includes a SM fiber Raman converter spliced to an output of the Yb fiber laser pump source. The Raman converter induces an “n” order frequency Stokes shift of the pump light to output the pump light at a Raman-shifted wavelength within 1220 and 1300 nm wavelength range with a broad spectral line of at least 10 nm. The disclosed light generator further has a single pass second harmonic generator (“SHG”) with a lithium triborate (“LBO”) nonlinear optical crystal having a spectral acceptance linewidth which is sufficient to cover the broad spectral line of the pump light. The SHG generates a SM pulsed broad-line red light with a broad spectral line of at least 4 nm.Type: GrantFiled: September 16, 2015Date of Patent: June 26, 2018Assignee: IPG PHOTONICS CORPORATIONInventors: Manuel Leonardo, Igor Samartsev, Alexey Avdokhin, Gregory Keaton
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Patent number: 9941120Abstract: The inventive system for crystallizing an amorphous silicon (a-Si) film is configured with a quasi-continuous wave fiber laser source operative to emit a film irradiating pulsed beam. The fiber laser source is operative to emit a plurality of non-repetitive pulses incident on the a-Si. In particular, the fiber laser is operative to emit multiple discrete packets of film irradiating light at a burst repetition rate (BRR), and a plurality of pulses within each packet emitted at a pulse repetition rate (PRR) which is higher than the BRR. The pulse energy, pulse duration of each pulse and the PRR are controlled so that each packet has a desired packet temporal power profile (W/cm2) and packet energy sufficient to provide transformation of a-Si to polysilicon (p-Si) at each location of the film which is exposed to at least one packets.Type: GrantFiled: July 2, 2015Date of Patent: April 10, 2018Assignee: IPG PHOTONICS CORPORATIONInventors: Alexey Avdokhin, Yuri Erokhin, Manuel Leonardo, Alexander Limanov, Igor Samartsev, Michael von Dadelszen
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Publication number: 20170294754Abstract: A broad line red light generator is configured with a single mode (SM) pulsed ytterbium (“Yb”) fiber laser pump source outputting pump light in a fundamental mode (“FM”) at a pump wavelength which is selected from a 1030-1120 nm wavelength range. The disclosed generator further includes a SM fiber Raman converter spliced to an output of the Yb fiber laser pump source. The Raman converter induces an “n” order frequency Stokes shift of the pump light to output the pump light at a Raman-shifted wavelength within 1220 and 1300 nm wavelength range with a broad spectral line of at least 10 nm. The disclosed light generator further has a single pass second harmonic generator (“SHG”) with a lithium triborate (“LBO”) nonlinear optical crystal having a spectral acceptance linewidth which is sufficient to cover the broad spectral line of the pump light. The SHG generates a SM pulsed broad-line red light with a broad spectral line of at least 4 nm.Type: ApplicationFiled: September 16, 2015Publication date: October 12, 2017Inventors: Manuel LEONARDO, Igor SAMARTSEV, Alexey AVDOKHIN, Gregory KEATON
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Publication number: 20160013057Abstract: The inventive system for crystallizing an amorphous silicon (a-Si) film is configured with a quasi-continuous wave fiber laser source operative to emit a film irradiating pulsed beam. The fiber laser source is operative to emit a plurality of non-repetitive pulses incident on the a-Si. In particular, the fiber laser is operative to emit multiple discrete packets of film irradiating light at a burst repetition rate (BRR), and a plurality of pulses within each packet emitted at a pulse repetition rate (PRR) which is higher than the BRR. The pulse energy, pulse duration of each pulse and the PRR are controlled so that each packet has a desired packet temporal power profile (W/cm2) and packet energy sufficient to provide transformation of a-Si to polysilicon (p-Si) at each location of the film which is exposed to at least one packets.Type: ApplicationFiled: July 2, 2015Publication date: January 14, 2016Inventors: Alexey AVDOKHIN, Yuri EROKHIN, Manuel LEONARDO, Alexander LIMANOV, Igor SAMARTSEV, Michael von Dadelszen
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Publication number: 20150249313Abstract: A frequency converter for converting a single mode input beam at a fundamental frequency to an output beam at a converted frequency is configured with a plurality of spaced optical components defining a resonant cavity. The optical components shape the input beam with at least one beam waist in the cavity.Type: ApplicationFiled: April 15, 2015Publication date: September 3, 2015Inventors: Alexey AVDOKHIN, Oleksiy Andrusyak
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Patent number: RE48398Abstract: The inventive system for crystallizing an amorphous silicon (a-Si) film is configured with a quasi-continuous wave fiber laser source operative to emit a film irradiating pulsed beam. The fiber laser source is operative to emit a plurality of non-repetitive pulses incident on the a-Si. In particular, the fiber laser is operative to emit multiple discrete packets of film irradiating light at a burst repetition rate (BRR), and a plurality of pulses within each packet emitted at a pulse repetition rate (PRR) which is higher than the BRR. The pulse energy, pulse duration of each pulse and the PRR are controlled so that each packet has a desired packet temporal power profile (W/cm2) and packet energy sufficient to provide transformation of a-Si to polysilicon (p-Si) at each location of the film which is exposed to at least one packets.Type: GrantFiled: August 8, 2019Date of Patent: January 19, 2021Assignee: IPG PHOTONICS CORPORATIONInventors: Alexey Avdokhin, Yuri Erokhin, Manuel Leonardo, Alexander Limanov, Igor Samartsev, Michael von Dadelszen