公开(公告)号：US12294194B2

公开(公告)日：2025-05-06

申请号：US16741486

申请日：2020-01-13

Applicant: Coherent, Inc.

Inventor： Norman Hodgson ,  Andrea Caprara ,  Kai Schmidt

IPC: H01S3/109 ,  B23K26/00 ,  B23K26/0622 ,  B23K26/064 ,  B23K26/354 ,  H01S3/06 ,  H01S3/08 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/115 ,  H01S3/16 ,  H01S3/00

Abstract: Laser annealing apparatus includes a plurality of frequency-tripled solid-state lasers, each delivering an output beam of radiation at a wavelength between 340 nm and 360 nm. Each output beam has a beam-quality factor (M2) greater of than 50 in one transverse axis and greater than 20 in another transverse axis. The output beams are combined and formed into a line-beam that is projected on a substrate being annealed. Each output beam contributes to the length of the line-beam.

公开(公告)号：US09684125B2

公开(公告)日：2017-06-20

申请号：US15098103

申请日：2016-04-13

Applicant: Coherent, Inc.

Inventor： Michael Hertwig ,  Norman Hodgson ,  Dmitri Simanovski

IPC: G02B6/02 ,  G02B6/024 ,  G02B6/27 ,  A61B18/22

CPC classification number: G02B6/02304 ,  A61B2018/2227 ,  G02B6/024 ,  G02B6/2706 ,  G02B6/2766

Abstract: Plane-polarized laser-radiation from a laser-source is converted to circularly polarized radiation by a quarter-wave plate. The circularly polarized radiation is input into a hollow-core fiber for transport to a point of use. The transported radiation is converted back to plane-polarized radiation by another quarter-wave plate between the fiber and the point of use.

公开(公告)号：US09160131B2

公开(公告)日：2015-10-13

申请号：US14516446

申请日：2014-10-16

Applicant: Coherent, Inc.

Inventor： Norman Hodgson ,  Michael Hertwig ,  H. Yang Pang

IPC: H01S3/08 ,  H01S3/04 ,  H01S3/042 ,  H01S3/06 ,  H01S3/11 ,  H01S3/02 ,  H01S3/081 ,  H01S3/094 ,  H01S3/16 ,  H01S3/23

CPC classification number: H01S3/04 ,  H01S3/025 ,  H01S3/0405 ,  H01S3/0407 ,  H01S3/042 ,  H01S3/0604 ,  H01S3/0621 ,  H01S3/0623 ,  H01S3/0816 ,  H01S3/094038 ,  H01S3/094076 ,  H01S3/094084 ,  H01S3/11 ,  H01S3/16 ,  H01S3/1625 ,  H01S3/1636 ,  H01S3/235

Abstract: A laser includes a Ti:sapphire gain-medium in the form of a thin-disk. The thin-disk gain-medium is optically pumped by pump-radiation pulses having a wavelength in the green region of the electromagnetic spectrum. The pump-radiation pulses have a duration less than twice the excited-state lifetime of the gain-medium.

Abstract translation: 激光器包括薄的形式的Ti：蓝宝石增益介质。 薄磁盘增益介质通过在电磁频谱的绿色区域中具有波长的泵浦辐射脉冲进行光泵浦。 泵浦辐射脉冲具有小于增益介质的激发态寿命的两倍的持续时间。

公开(公告)号：US08873136B2

公开(公告)日：2014-10-28

申请号：US13753738

申请日：2013-01-30

Applicant: Coherent, Inc.

Inventor： Andrei Starodoumov ,  Norman Hodgson

IPC: H01S3/0941 ,  H01S3/16

CPC classification number: H01S3/16 ,  H01S3/0057 ,  H01S3/0085 ,  H01S3/0405 ,  H01S3/042 ,  H01S3/0606 ,  H01S3/0625 ,  H01S3/06758 ,  H01S3/094084 ,  H01S3/0941 ,  H01S3/1618 ,  H01S3/1643 ,  H01S3/2316 ,  H01S3/2333 ,  H01S5/4031

Abstract: An optical amplifier for use as a final amplification stage for a fiber-MOPA has a gain-element including a thin wafer or chip of ytterbium-doped YAG. An elongated gain-region is formed in gain-element by multiple incidences of radiation from a diode-laser bar.

Abstract translation: 用作光纤MOPA的最终放大级的光放大器具有包括掺镱YAG的薄晶片或芯片的增益元件。 通过来自二极管 - 激光条的多次辐射，在增益元件中形成细长的增益区域。

公开(公告)号：US11152757B2

公开(公告)日：2021-10-19

申请号：US16434080

申请日：2019-06-06

Applicant: Coherent, Inc.

Inventor： Norman Hodgson ,  Dmitri Simanovski

IPC: H01S3/11 ,  H01S3/067 ,  H01S3/08 ,  H01S3/10 ,  H01S3/1055

Abstract: A fiber laser producing a beam of ultrashort laser pulses at a repetition rate greater than 200 MHz includes a linear fiber resonator and a fiber branch. Ultrashort laser pulses are generated by passive mode-locking and circulate within the linear fiber resonator. Each circulating laser pulse is split into a portion that continues propagating in the linear fiber resonator and a complementary portion that propagates through the fiber branch and is then returned to the linear fiber resonator. The optical length of the linear fiber resonator is an integer multiple of the optical length of the fiber branch. The repetition rate of the ultrashort laser pulses is the reciprocal of the propagation time of the laser pulses through the fiber branch.

公开(公告)号：US10535975B2

公开(公告)日：2020-01-14

申请号：US15692653

申请日：2017-08-31

Applicant: Coherent, Inc.

Inventor： Andrei Starodoumov ,  Norman Hodgson

IPC: H01S3/23 ,  H01S3/06 ,  H01S3/067 ,  H01S3/16

Abstract: Laser-apparatus includes a fiber-MOPA arranged to deliver amplified seed optical pulses having a wavelength of about 1043 nanometers to a multi-pass ytterbium-doped yttrium aluminum garnet solid-state optical amplifier for further amplification.

公开(公告)号：US09653867B2

公开(公告)日：2017-05-16

申请号：US14245913

申请日：2014-04-04

Applicant: Coherent, Inc.

Inventor： Dmitri Simanovski ,  Norman Hodgson

IPC: H01S3/00 ,  H01S3/16 ,  H01S3/067 ,  G02B27/10 ,  G02B27/42 ,  H01S3/23 ,  G01J3/14 ,  G01J3/18 ,  G02F1/35 ,  G02F1/365

CPC classification number: H01S3/0057 ,  G01J3/14 ,  G01J3/18 ,  G02B27/1006 ,  G02B27/4244 ,  G02F1/353 ,  G02F1/365 ,  G02F2001/3528 ,  G02F2203/055 ,  G02F2203/255 ,  G02F2203/58 ,  H01S3/005 ,  H01S3/0078 ,  H01S3/0092 ,  H01S3/06758 ,  H01S3/1618 ,  H01S3/2308 ,  H01S2301/08

Abstract: A source of femtosecond pulses at center wavelengths of about 940 nm and about 1140 nanometers (nm) includes a mode-locked fiber MOPA delivering pulses having a center wavelength of about 1040 nm. The 1040-nanometer pulses are spectrally spread into a continuum spectrum extending in range between about 900 nm and about 1200 nm and having well defined side-lobes around the 940-nm and 1140-wavelengths. Radiation is spatially selected from these side-lobes and delivered as the 940-nm and 1140-nm pulses.

公开(公告)号：US09515445B2

公开(公告)日：2016-12-06

申请号：US14958599

申请日：2015-12-03

Applicant: Coherent, Inc.

Inventor： Norman Hodgson ,  Dmitri Simanovski ,  Andrei Starodoumov

IPC: G02B6/00 ,  G02F1/35 ,  H01S3/00 ,  G02B5/10 ,  G02B17/00 ,  G02B17/02 ,  H01S3/067

CPC classification number: H01S3/0092 ,  G02B5/10 ,  G02B17/004 ,  G02B17/023 ,  G02F1/35 ,  G02F1/3511 ,  G02F2001/3528 ,  G02F2001/3542 ,  H01S3/0057 ,  H01S3/0078 ,  H01S3/067 ,  H01S2301/08

Abstract: A mode-locked fiber MOPA delivers pulses of laser-radiation. A super-continuum generator including a bulk spectral-broadening element and a negative group-delay dispersion (NGDD) device is arranged to receive a pulse from the MOPA and cause the pulse to make a predetermined number of sequential interactions with the broadening element and the NGDD device. After making the predetermined interactions, the pulse is delivered from the super-continuum generator with a very broad spectral-bandwidth and a very short duration.

公开(公告)号：US09240663B2

公开(公告)日：2016-01-19

申请号：US14080366

申请日：2013-11-14

Applicant: Coherent, Inc.

Inventor： Norman Hodgson ,  Dmitri Simanovski ,  Andrei Starodoumov

IPC: G02B6/00 ,  G02F1/35 ,  H01S3/00

CPC classification number: H01S3/0092 ,  G02B5/10 ,  G02B17/004 ,  G02B17/023 ,  G02F1/35 ,  G02F1/3511 ,  G02F2001/3528 ,  G02F2001/3542 ,  H01S3/0057 ,  H01S3/0078 ,  H01S3/067 ,  H01S2301/08

Abstract: A mode-locked fiber MOPA delivers pulses of laser-radiation. A super-continuum generator including a bulk spectral-broadening element and a negative group-delay dispersion (NGDD) device is arranged to receive a pulse from the MOPA and cause the pulse to make a predetermined number of sequential interactions with the broadening element and the NGDD device. After making the predetermined interactions, the pulse is delivered from the super-continuum generator with a very broad spectral-bandwidth and a very short duration.

Abstract translation: 锁模光纤MOPA提供激光辐射脉冲。 包括体谱扩展元件和负组延迟色散（NGDD）器件的超连续发生器布置成从MOPA接收脉冲，并使脉冲与扩展元件进行预定数量的顺序相互作用，并且 NGDD设备。 在进行预定的相互作用之后，脉冲从超连续发生器以非常宽的频谱带宽和非常短的持续时间传送。