公开(公告)号：US12107379B2

公开(公告)日：2024-10-01

申请号：US17422267

申请日：2020-02-27

Applicant: Fujikura Ltd.

Inventor： Shinichi Sakamoto ,  Yasuto Chiba ,  Wataru Kiyoyama ,  Yutaka Yamaguchi ,  Takashi Hasunuma

IPC: H01S3/094 ,  B23K26/70 ,  H01S3/00 ,  H01S3/067

CPC classification number: H01S3/094053 ,  B23K26/705 ,  H01S3/0014 ,  H01S3/005 ,  H01S3/06708

Abstract: A laser device includes at least one light source; a delivery fiber that is configured to propagate of laser light emitted from the light source; and a first light detection unit and a second light detection unit configured to detect a part of light propagating in a direction opposite to a propagation direction of the laser light through the delivery fiber. The first light detection unit detects first light included in a wavelength band of visible light. The second light detection unit detects second light included in a wavelength band of near-infrared light.

公开(公告)号：US20240295700A1

公开(公告)日：2024-09-05

申请号：US18193677

申请日：2023-03-31

Applicant: Fuzhou Photop Optics Co., Ltd

Inventor： Li Wu ,  Bin Zheng ,  Zhongwei Yu ,  Zhong Cheng ,  Lei Lin

IPC: G02B6/293 ,  G02B6/02

CPC classification number: G02B6/29334 ,  G02B6/02209 ,  H01S3/06708 ,  H01S3/0675

Abstract: An optical fiber cladding optical filter includes an elongated capillary tube including an inner surface positioned surrounding an elongated optical fiber proximate or adjacent an exterior surface of the optical fiber and an outer surface positioned spaced from the exterior surface of the optical fiber. A grating formed on the outer surface of the elongated capillary tube aids in suppressing evanescent laser light that exits the optical fiber transverse to a longitudinal axis of the optical fiber. The elongated optical fiber and surrounding elongated capillary tube can include one or more curves along a length thereof to aid in the removal of one or more higher order laser modes as evanescent laser light that exits the optical fiber. The one or more curves can be received in a container to prevent or avoid evanescent laser exiting the optical fiber from propagating into an ambient environment.

公开(公告)号：US20240022039A1

公开(公告)日：2024-01-18

申请号：US18475948

申请日：2023-09-27

Applicant: Seno Medical Instruments, Inc.

Inventor： Tam Do ,  Xavier Saenz

IPC: H01S3/115 ,  H01S3/06 ,  A61B5/00 ,  H01S3/102 ,  H01S3/107

CPC classification number: H01S3/115 ,  H01S3/0627 ,  A61B5/0095 ,  H01S3/1024 ,  H01S3/107 ,  H01S3/06708

Abstract: A laser assembly is provided that includes a laser resonator that emits a first light having a first pulse width, and a trigger assembly electrically coupled to the laser resonator to actuate the laser resonator. The laser assembly also includes a sensor configured to detect the first light as the light emits from the laser resonator, and one or more processors coupled to the trigger assembly. The one or more processors are configured to obtain a first time delay interval from when the trigger assembly is actuated to when the sensor detects the first light, and actuate the laser resonator to emit a second light having a second pulse width based on the time delay interval determined.

公开(公告)号：US11870204B2

公开(公告)日：2024-01-09

申请号：US17591601

申请日：2022-02-03

Applicant: KYOCERA CORPORATION

Inventor： Tomonori Sugime

IPC: H04B10/80 ,  H01S3/067 ,  G02B6/42 ,  H01S5/30

CPC classification number: H01S3/06708 ,  G02B6/4296 ,  H01S5/3013 ,  H01S5/3045 ,  H04B10/807

Abstract: An optical power supply system includes a first data communication device and a second data communication device. The first data communication device includes a power sourcing equipment device including a first semiconductor laser; and a first transmitter including a second semiconductor laser and a first modulator. The second data communication device includes a powered device comprising a photoelectric conversion element; a receiver; a data processing unit; and a second transmitter including a third semiconductor laser and a second modulator. The first data communication device and the second data communication device perform optical communication with each other. The electric power obtained by the conversion of the feed light by the photoelectric conversion element is driving power for the second transmitter and the receiver.

公开(公告)号：US11833607B2

公开(公告)日：2023-12-05

申请号：US17341592

申请日：2021-06-08

Applicant: IPG Photonics Corporation

Inventor： Yuri Grapov

IPC: B23K26/042 ,  B23K26/04 ,  B23K26/06 ,  B23K26/21 ,  G02B6/42 ,  B23K26/70 ,  H01S3/067 ,  H01S3/00 ,  B23K26/38

CPC classification number: B23K26/042 ,  B23K26/043 ,  B23K26/0643 ,  B23K26/21 ,  B23K26/38 ,  B23K26/707 ,  G02B6/4225 ,  G02B6/4226 ,  H01S3/005 ,  H01S3/06704 ,  H01S3/06708

Abstract: A laser alignment system is used to align an output fiber with a fiber laser, for example, when coupling a feeding fiber to a process fiber using a beam coupler or switch. The alignment system includes a laser alignment apparatus that is coupled at a first end to the output fiber and at a second end to a beam dump/power meter. The alignment apparatus defines a light passage and a light capture chamber along the light passage. When light is not aligned into the core of the output fiber, at least a portion of the light passing out of the output fiber will be captured by the light capture chamber and detected by a photodetector in optical communication with the light capture chamber. By monitoring the readings of the photodetector, the output fiber may be properly aligned with the laser light from the fiber laser.

公开(公告)号：US11808973B2

公开(公告)日：2023-11-07

申请号：US17322777

申请日：2021-05-17

Applicant: nLIGHT, Inc.

Inventor： Ryan Hawke ,  Teemu Kokki ,  Shaun Hampton ,  Chris Luetjen

IPC: G02B6/036 ,  G02B6/245 ,  G02B6/255 ,  H01S3/067

CPC classification number: G02B6/036 ,  G02B6/245 ,  G02B6/2558 ,  H01S3/06708

Abstract: Spliced multi-clad optical fibers with a cladding light stripper (CLS) encapsulating the splice. The splice may facilitate conversion between two optical fibers having different architectures, such as different core and/or cladding dimensions. The CLS may comprise a first length of fiber on a first side of the splice, and a second length of fiber on a second side of the splice, encapsulating the splice within the lengths of the CLS. The splice may abut one or more of the lengths of the CLS, or may be separated from one or more lengths of the CLS by an intermediate length of a first and/or second fiber joined by the splice.

公开(公告)号：US20180267233A1

公开(公告)日：2018-09-20

申请号：US15460304

申请日：2017-03-16

Applicant: OFS Fitel, LLC

Inventor： Lalitkumar Bansal ,  Clifford E. Headley ,  Andrea Rosales-Garcia ,  Jerome C. Porque

IPC: G02B6/02 ,  H01S3/067 ,  H01S3/094 ,  G02B6/255 ,  G02B6/245 ,  C03C25/10

CPC classification number: G02B6/02052 ,  C03C25/1061 ,  G02B6/03694 ,  G02B6/14 ,  H01S3/06708 ,  H01S3/06754 ,  H01S3/094003

Abstract: An all-glass cladding mode stripper comprises a plurality of high refractive index, small diameter glass beads disposed along an exposed portion of the inner cladding region of an optical fiber. The unwanted low NA signal light (as well as any other type of stray light) propagating within the cladding layer is removed by refracting into the adjacent beads, where this captured light then scatters away from the optical fiber.

公开(公告)号：US10014649B2

公开(公告)日：2018-07-03

申请号：US15387089

申请日：2016-12-21

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY ,  HQPHOTONICS INC.

Inventor： Jiang Li ,  Kerry Vahala

IPC: H01S3/067 ,  H01S3/11 ,  H01S3/30 ,  H01S3/094 ,  H01S3/13 ,  H01S3/108 ,  H03B17/00

CPC classification number: H01S3/06791 ,  G02B6/293 ,  G02B6/2934 ,  H01S3/06708 ,  H01S3/094003 ,  H01S3/094049 ,  H01S3/094096 ,  H01S3/1086 ,  H01S3/1109 ,  H01S3/1305 ,  H01S3/1312 ,  H01S3/302 ,  H03B17/00

Abstract: A stabilized laser source includes a fiber-ring Brillouin laser that incorporates a circulator for non-reciprocal operation and for launching of a pump optical signal. Most of the pump optical signal is launched in a forward direction and drives Brillouin laser oscillation in the backward direction, a portion of which exits via an optical coupler as the optical output of the laser source. A small fraction of the pump optical signal is launched in the backward direction via the optical coupler, and a fraction of that backward-propagating pump optical signal exits via the optical coupler as an optical feedback signal. A frequency-locking mechanism receives the optical feedback signal and controls the pump optical frequency to maintain resonant propagation of the backward-propagating pump optical signal. A second pump optical signal can be launched in the forward direction to generate a second Brillouin laser oscillation.

公开(公告)号：US10014645B2

公开(公告)日：2018-07-03

申请号：US15356845

申请日：2016-11-21

Applicant: IMRA AMERICA, INC.

Inventor： Donald J. Harter

IPC: H01S3/30 ,  H01S3/00 ,  H01S3/067 ,  H01S3/08 ,  H01S3/094 ,  H01S3/10 ,  H01S3/16 ,  H04B10/508 ,  H01S3/11 ,  H01S3/0941 ,  G02B6/293 ,  H01S3/23 ,  H01S5/00

CPC classification number: H01S3/0057 ,  G02B6/2932 ,  G02B6/29374 ,  H01S3/067 ,  H01S3/06708 ,  H01S3/06716 ,  H01S3/06725 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/08013 ,  H01S3/094003 ,  H01S3/094076 ,  H01S3/0941 ,  H01S3/10046 ,  H01S3/11 ,  H01S3/1106 ,  H01S3/1608 ,  H01S3/1618 ,  H01S3/2308 ,  H01S5/0057 ,  H04B10/508

Abstract: System for converting relatively long pulses from rep-rate variable ultrafast optical sources to shorter, high-energy pulses suitable for sources in high-energy ultrafast lasers. Fibers with positive group velocity dispersion (GVD) and self phase modulation are advantageously employed with the optical sources. These systems take advantage of the need for higher pulse energies at lower repetition rates so that such sources can be cost effective.

公开(公告)号：US20170343729A1

公开(公告)日：2017-11-30

申请号：US15581263

申请日：2017-04-28

Applicant: NUBURU, INC.

Inventor： Mark S. Zediker ,  Matthew Silva Sa ,  Robert Stegeman ,  James Tucker ,  Don Millick

IPC: G02B6/02 ,  G02B6/12 ,  G02B6/255

CPC classification number: G02B6/02128 ,  G02B6/00 ,  G02B6/12 ,  G02B6/2551 ,  G02B2006/12171 ,  H01S3/06708 ,  H01S3/0675 ,  H01S3/08063 ,  H01S3/094003 ,  H01S3/09415 ,  H01S3/302 ,  H01S5/32341

Abstract: Fiber laser having a monolithic laser resonator having laser affected zones for providing laser beams having wavelengths below 800 nm and from between 400 nm to 800 nm. Methods of using femtosecond lasers to form fiber Bragg gratings, volume Bragg gratings, space gratings, and laser beam delivery patterns for changing the index of refraction within optical fibers.