公开(公告)号：US20240297476A1

公开(公告)日：2024-09-05

申请号：US18647199

申请日：2024-04-26

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Chun-Lin Louis Chang ,  Henry Tong Yee Shian ,  Alan Tu ,  Han-Lung Chang ,  Tzung-Chi Fu ,  Bo-Tsun Liu ,  Li-Jui Chen ,  Po-Chung Cheng

IPC: H01S3/104 ,  H01S3/00 ,  H01S3/04 ,  H01S3/041 ,  H01S3/10 ,  H01S3/1123 ,  H01S3/223 ,  H01S3/23 ,  H05G2/00

CPC classification number: H01S3/104 ,  H01S3/1001 ,  H01S3/2316 ,  H05G2/008 ,  H01S3/005 ,  H01S3/0407 ,  H01S3/041 ,  H01S3/10038 ,  H01S3/10069 ,  H01S3/1123 ,  H01S3/2232

Abstract: The present disclosure provides a method for aligning a master oscillator power amplifier (MOPA) system. The method includes ramping up a pumping power input into a laser amplifier chain of the MOPA system until the pumping power input reaches an operational pumping power input level; adjusting a seed laser power output of a seed laser of the MOPA system until the seed laser power output is at a first level below an operational seed laser power output level; and performing a first optical alignment process to the MOPA system while the pumping power input is at the operational pumping power input level, the seed laser power output is at the first level, and the MOPA system reaches a steady operational thermal state.

公开(公告)号：US11984695B1

公开(公告)日：2024-05-14

申请号：US18132070

申请日：2023-04-07

Applicant: Khanh Le ,  John Lekavich ,  Bao Tran

Inventor： Khanh Le ,  John Lekavich ,  Bao Tran

IPC: H01S3/00 ,  H01S3/1123 ,  H01S3/115 ,  H01S3/117

CPC classification number: H01S3/117 ,  H01S3/0057 ,  H01S3/0085 ,  H01S3/1123 ,  H01S3/115

Abstract: An optical system for producing pulsed laser output includes a laser cavity containing an active medium for generating laser radiation; and an acousto-optic modulator (AOM) positioned in the laser cavity for modulating the laser radiation acting as a Q-switch.

公开(公告)号：US20240348002A1

公开(公告)日：2024-10-17

申请号：US18749336

申请日：2024-06-20

Applicant: Candela Corporation

Inventor： Xiaoming Shang ,  Kevin Schomacker ,  Yimin Zang ,  Hugh Xiong ,  Herb Otterson

IPC: H01S3/1123 ,  A61N5/06 ,  A61N5/067 ,  H01S3/00 ,  H01S3/0941 ,  H01S3/109 ,  H01S3/16

CPC classification number: H01S3/1123 ,  A61N5/0616 ,  A61N5/067 ,  H01S3/0071 ,  H01S3/09415 ,  H01S3/109 ,  A61N2005/0644 ,  A61N2005/0651 ,  A61N2005/0659 ,  A61N2005/0663 ,  H01S3/1611 ,  H01S3/1643

Abstract: A fractional handpiece and systems thereof for skin treatment including a handpiece body including a passively Q-switched laser assembly within the handpiece body operatively connected to a pump laser source to receive a pump laser beam having a first wavelength and a beam scanning system operable to scan a solid beam emitted by the passively Q-switched laser assembly and form a line of micro-beams across a segment of skin. The passively Q-switched laser assembly generates a high-power sub-nanosecond pulsed laser beam having a second wavelength. The pump laser source is a diode laser which emits the first wavelength at about 500 nm to about 1000 nm.

公开(公告)号：US20240339798A1

公开(公告)日：2024-10-10

申请号：US18701213

申请日：2021-07-06

Applicant: CHANGCHUN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Yongji Yu ,  Hang Liu ,  Guangyong Jin ,  Yuheng Wang ,  Chao Wang ,  Yuan Dong

IPC: H01S3/081 ,  H01S3/11 ,  H01S3/1123 ,  H01S3/16

CPC classification number: H01S3/0813 ,  H01S3/1103 ,  H01S3/1123 ,  H01S3/1611 ,  H01S3/1671 ,  H01S3/1691 ,  H01S2302/00

Abstract: A multi-wavelength mid-infrared laser pulse train cavity dumped laser based on Nd:MgO:APLN crystal is disclosed. In response to the needs in the field of differential absorption lidar, it is necessary to introduce multi-fundamental frequency light pulse accumulation and superposition, and parametric light synchronization pulse compression technology in the multi-wavelength mid-infrared laser operating mechanism. To this end, a splayed parametric light oscillation cavity formed in conjunction with a Nd:MgO:APLN crystal is disclosed, wherein it is possible to obtain multi-wavelength mid-infrared laser pulse train output with narrow pulse width and high peak power, meeting the needs of differential absorption lidar for mid-infrared lasers.

公开(公告)号：US20230187890A1

公开(公告)日：2023-06-15

申请号：US17638219

申请日：2021-09-06

Applicant: TriEye Ltd.

Inventor： Yoni Prosper Shalibo ,  Stanislav Khatsevich ,  Avraham Bakal ,  Omer Kapach ,  Uriel Levy ,  Ariel Danan

IPC: H01S3/1123 ,  H01S3/094 ,  H01S3/08 ,  H01S3/16 ,  G01S7/4865 ,  G01S17/08

CPC classification number: H01S3/1123 ,  H01S3/094038 ,  H01S3/08059 ,  H01S3/1611 ,  H01S3/1643 ,  H01S3/1673 ,  G01S7/4865 ,  G01S17/08

Abstract: Passively Q-switched lasers and short wave infrared (SWIR) electro-optical systems including such lasers. A passively Q-switched laser may include a gain medium (GM) having a stimulated emission cross section σSE, a saturable absorber (SA) having an absorption cross section (σa) which is less than three times the σSE of the GM, and an optical resonator within which the GM and the SA are positioned, the optical resonator comprising a high reflectivity mirror and an output coupler, wherein at least one of the high reflectivity mirror and the output coupler comprises a curved mirror, directing light within the optical resonator such that an effective cross-section of a laser mode within the SA (ASA) is smaller than a cross-section of a laser mode within a Rayleigh length of the pump (AGM).

公开(公告)号：US20240339804A1

公开(公告)日：2024-10-10

申请号：US18132047

申请日：2023-04-07

Applicant: Khanh Le ,  John Lekavich ,  Bao Tran

Inventor： Khanh Le ,  John Lekavich ,  Bao Tran

IPC: H01S3/117 ,  H01S3/00 ,  H01S3/1123 ,  H01S3/115

CPC classification number: H01S3/117 ,  H01S3/0057 ,  H01S3/1123 ,  H01S3/115

Abstract: A laser metal deposition system includes a laser source those laser beam is provided to an acousto-optic deflector that includes an optical element having a surface with one or more steps formed thereon; a conductive layer formed on the surface with the steps; one or more crystals secured to each step; and electrodes positioned on each surface of each crystal.

公开(公告)号：US20240322515A1

公开(公告)日：2024-09-26

申请号：US18615023

申请日：2024-03-25

Applicant: Gooch & Housego PLC

Inventor： Lars SANDSTRÖM ,  Thomas STENGER

IPC: H01S3/06 ,  G02B1/08 ,  G02B1/18 ,  H01S3/1123

CPC classification number: H01S3/0619 ,  G02B1/08 ,  G02B1/18 ,  H01S3/1123

Abstract: Provided is an optical apparatus comprising a hygroscopic optical crystal and a coating on at least a portion of the surface of the hygroscopic optical crystal, wherein the coating is non-porous and configured to prevent migration of water and/or oxygen and/or moisture therethrough.

公开(公告)号：US20240266797A1

公开(公告)日：2024-08-08

申请号：US18640806

申请日：2024-04-19

Applicant: Boston Scientific Scimed, Inc.

Inventor： Honggang Yu ,  Rongwei Jason Xuan ,  Jian James Zhang

IPC: H01S3/109 ,  A61B18/00 ,  A61B18/20 ,  H01S3/00 ,  H01S3/04 ,  H01S3/042 ,  H01S3/105 ,  H01S3/1123

CPC classification number: H01S3/109 ,  H01S3/005 ,  H01S3/105 ,  A61B2018/00589 ,  A61B2018/00625 ,  A61B2018/20359 ,  A61B2018/2065 ,  A61B2018/207 ,  H01S3/0078 ,  H01S3/0407 ,  H01S3/042 ,  H01S3/1123

Abstract: A surgical laser system includes a pump module configured to produce pump energy within an operating wavelength, a gain medium configured to convert the pump energy into first laser energy, a non-linear crystal (NLC) configured to convert a portion of the first laser energy into second laser energy, which is a harmonic of the first laser energy, an output, and a first path diversion assembly having first and second operating modes. When the first path diversion assembly is in the first operating mode, the first laser energy is directed along the output path to the output, and the second laser energy is diverted from the output path and the output. When the first path diversion assembly is in the second operating mode, the second laser energy is directed along the output path to the output, and the first laser energy is diverted from the output path and the output.

公开(公告)号：US20230223730A1

公开(公告)日：2023-07-13

申请号：US18150079

申请日：2023-01-04

Applicant: BRIGHT SOLUTIONS S.R.L.

Inventor： Antoniangelo Agnesi ,  Luca Carra' ,  Giuliano Piccinno ,  Federico Pirzio

IPC: H01S3/00 ,  H01S3/067 ,  G02F1/365 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/091 ,  H01S5/00 ,  H01S3/108 ,  G02F1/35

CPC classification number: H01S3/0057 ,  H01S3/067 ,  G02F1/365 ,  H01S3/094015 ,  H01S3/0941 ,  H01S3/0912 ,  H01S3/0085 ,  H01S5/0092 ,  H01S3/108 ,  G02F1/3536 ,  H01S3/1123

Abstract: A device for the generation of ultrashort pulses, wherein an oscillator is formed by: a first and a second non-overlapping transmission band-pass filter, which can serve as reflecting end element of the oscillator; optically transparent means with non-linear Kerr coefficient χ(3) different from zero configured to achieve a spectral broadening by self-phase modulation of the signal transiting through these means; an optical waveguide that produces a positive gain; a node configured to receive a trigger signal designed to activate the operation of the oscillator; a trigger signal generating device comprising: a laser source, for example a microchip, configured to generate a laser pulse, preferably with a minimum bandwidth, having a duration of hundreds of ps, up to the ns; a coupling system designed to introduce the pulse of the trigger laser into a waveguide made of an optically transparent material characterised by a non-linear Kerr coefficient χ(3) different from zero, which is configured to produce two distinct effects in order to spectrally broaden the pulse of the trigger laser, and precisely: a) self-phase modulation four-wave mixing; the output of the waveguide supplies the trigger signal to the node. The pulses produced by the oscillator typically have a duration of the order of the picosecond and are easily reduced to the Fourier limit of circa 100 femtoseconds by means of a dispersive device.

公开(公告)号：US20240243542A1

公开(公告)日：2024-07-18

申请号：US18558754

申请日：2022-02-15

Applicant: SONY GROUP CORPORATION

Inventor： KENJI TANAKA ,  GEN YONEZAWA ,  MASANAO KAMATA ,  HIROSHI TOBITA ,  GO HIRANO

IPC: H01S3/1123 ,  H01S3/08

CPC classification number: H01S3/1123 ,  H01S3/08009 ,  H01S3/08054

Abstract: An optical resonator having a short pulse width, a low manufacturing cost, and a high degree of freedom in design is provided. An optical resonator according to one aspect of the present disclosure includes a pair of reflection members, a laser medium that is disposed between the pair of reflection members and is excited by specific excitation light to emit emission light, and a polarization control unit that is disposed between the pair of reflection members and controls polarization of the emission light, in which the polarization control unit has a microstructure on a surface so as to have different transmittances for polarized light beams orthogonal to each other out of zeroth-order diffracted light of the emission light.