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公开(公告)号：US20250007231A1
公开(公告)日：2025-01-02
申请号：US18709591
申请日：2022-09-14
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Takaaki MORITA , Takashi SEKINE , Yoshinori KATO , Takuto IGUCHI
Abstract: A laser medium unit includes a laser gain medium that is formed in a plate shape, that has a first surface and a second surface, and that generates emission light upon irradiation with excitation light from the first surface; and a light guiding and cooling member connected to the first surface to guide the excitation light toward the first surface and to cool the laser gain medium. The first surface consists of a first region to which the light guiding and cooling member is thermally connected, and a second region other than the first region. An entirety of the second region is thermally isolated from the light guiding and cooling member.
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公开(公告)号：US20240421550A1
公开(公告)日：2024-12-19
申请号：US18743508
申请日：2024-06-14
Applicant: IMEC VZW
Inventor： Iakov GOLDBERG , Karim ELKHOULY , Nirav ANNAVARAPU , Robert GEHLHAAR , Jan GENOE , Paul HEREMANS
Abstract: An electrically-operable laser device for emitting light at least at a wavelength includes a substrate; at least a first in-plane resonator; a first electrode; a lasing gain medium; and a second electrode. Each resonator includes at least two solid materials having an electrical conductivity below 3 S/m, wherein two or more of the solid materials differ in their refractive indices. The top surface of the first in-plane resonator is planar and has a root mean square roughness below 5 nm. The first resonator is either a) situated above the substrate, or b) comprises a material of the substrate as a first of the at least two solid materials. Any further in-plane resonators, if present, are situated above the substrate.
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公开(公告)号：US20240079843A1
公开(公告)日：2024-03-07
申请号：US18505039
申请日：2023-11-08
Applicant: Quantum-Si Incorporated
Inventor： Jonathan M. Rothberg , Jason W. Sickler , Lawrence C. West , Faisal R. Ahmad , Paul E. Glenn , Jack Jewell , John Glenn , Jose Camara , Jeremy Christopher Jordan , Todd Rearick , Farshid Ghasemi , Jonathan C. Schultz , Keith G. Fife , Benjamin Cipriany
IPC: H01S3/1115 , G02F1/37 , H01S3/02 , H01S3/08 , H01S3/081 , H01S3/0941 , H01S3/16
CPC classification number: H01S3/1115 , G02F1/37 , H01S3/025 , H01S3/08072 , H01S3/0813 , H01S3/09415 , H01S3/1611 , H01S3/1673 , H01S3/10046
Abstract: Apparatus and methods for producing ultrashort optical pulses are described. A high-power, solid-state, passively mode-locked laser can be manufactured in a compact module that can be incorporated into a portable instrument. The mode-locked laser can produce sub-50-ps optical pulses at a repetition rates between 200 MHz and 50 MHz, rates suitable for massively parallel data-acquisition. The optical pulses can be used to generate a reference clock signal for synchronizing data-acquisition and signal-processing electronics of the portable instrument.
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公开(公告)号：US11804688B1
公开(公告)日：2023-10-31
申请号：US16904796
申请日：2020-06-18
Inventor： Donald B. Coyle
Abstract: An apparatus and method for mounting a laser rod includes a mount having a cylindrical through hole in which the laser rod is disposed. A polymer is disposed in the cylindrical through hole in an annular space between an outer diameter of the laser rod and an inner diameter of the cylindrical through hole. The laser rod is suspended in a symmetrical thermal and mechanical interface. There is open access to the ends of the laser rod for end pumping and laser cavity alignment.
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公开(公告)号：US11744671B2
公开(公告)日：2023-09-05
申请号：US16806449
申请日：2020-03-02
Applicant: Convergent Dental, Inc.
Inventor： William Harris Groves, Jr. , Charles H. Dresser , Nathan P. Monty , Zhijie Wang , Christopher Ricci , Jon Robert Quillard
CPC classification number: A61C1/0046 , A61B18/22 , A61C1/0015 , A61C19/066 , A61N5/0603 , A61C1/0061 , A61C1/052 , A61N5/067 , A61N2005/0606 , H01S3/02
Abstract: This disclosure relates to various systems and methods related to preventative laser-based treatment of a dental tissue; for example, to prevent a patient from forming cavities. In some instances, a laser-based treatment system can generate a laser beam pulse with a fluence profile at a treatment site that results in either an increase in acid resistance of the tissue or removal of carbonate from the tissue, without melting or ablating the tissue. In some instances, the laser-based treatment system can direct the laser beam to various locations within a treatment site according to a temporal and/or spatial pattern, that results in either an increase in acid resistance of the tissue or removal of carbonate from the tissue, without melting or ablating the tissue. Many other systems and techniques for preventative and other laser-based treatment are also described.
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Patent Agency Ranking
公开(公告)号：US20230129060A1
公开(公告)日：2023-04-27
申请号：US17646395
申请日：2021-12-29
Applicant: Lumentum Operations LLC
Inventor： Christoffer STROEMBERG , Connor BENTON , Alba FORNELLS VERNET
Abstract: A heat sink assembly may include an alignment body with an opening configured to receive a crystal rod, wherein the opening is configured to maintain a crystalline orientation of the crystal rod relative to a physical orientation of the alignment body. The heat sink assembly may include a first cooling stack, wherein the first cooling stack includes a first cutout to receive the crystal rod and the alignment body. The heat sink assembly may include a second cooling stack, wherein the second cooling stack includes a second cutout to receive the crystal rod and the alignment body, and wherein the first cooling stack and the second cooling stack are configured to mate and at least partially sandwich the crystal rod and the alignment body.
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公开(公告)号：US20230071683A1
公开(公告)日：2023-03-09
申请号：US17902764
申请日：2022-09-02
Applicant: Thomas James Kane , John Lawrence Nightingale
Inventor： Thomas James Kane , John Lawrence Nightingale
Abstract: A laser resonator assembly and a method of assembly of the laser resonator assembly are described. The laser resonator assembly has a gain element and an output coupler that are placed in a gain element frame and output coupler frame, respectively. The output coupler may also be a saturable absorber element so that the laser resonator assembly emits Q-switched pulses. The frames provide heat dissipation and can be easily aligned and permanently affixed in an appropriate alignment. A laser using the laser resonator assembly can be assembled in a low-cost manner.
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公开(公告)号：US20230060536A1
公开(公告)日：2023-03-02
申请号：US17904324
申请日：2021-02-05
Applicant: SONY GROUP CORPORATION
Inventor： KENJI TANAKA
Abstract: An optical resonator, a constituent part of the optical resonator, and a laser device that enable a reduction in size even if a wavelength band limiting element is disposed in the optical resonator, are provided.
An optical resonator including: a laser medium that is disposed between a pair of reflection members, and emits emitted light that has been excited by excitation light that has been predetermined; and a wavelength band limiting element that is disposed on a side of emission of the emitted light between the pair of reflection members, includes two reflection flat faces that are orthogonal to an optical axis of the laser medium, and limits a wavelength band of the emitted light, in which the wavelength band limiting element is disposed in a position that prevents a resonance component outside an intended wavelength range of the wavelength band limiting element from being generated between a reflection member on a laser beam emission side from among the pair of reflection members and the wavelength band limiting element.-
公开(公告)号：US11526001B2
公开(公告)日：2022-12-13
申请号：US16557384
申请日：2019-08-30
Applicant: IDEX HEALTH & SCIENCE LLC
Inventor： David E. Hargis , John O'Shaughnessy
IPC: G02B26/08 , H01S3/23 , G02B27/10 , G02B27/14 , G02B27/30 , H01S3/02 , H01S3/04 , G01N21/64 , H01S3/00
Abstract: Various embodiments of a multi-laser system are disclosed. In some embodiments, the multi-laser system includes a plurality of lasers, a plurality of laser beams, a beam positioning system, a thermally stable enclosure, and a temperature controller. The thermally stable enclosure is substantially made of a material with high thermal conductivity such as at least 5 W/(m K). The thermally stable enclosure can help maintain alignment of the laser beams to a target object over a range of ambient temperatures. Various embodiments of an optical system for directing light for optical measurements such laser-induced fluorescence and spectroscopic analysis are disclosed. In some embodiments, the optical system includes a thermally conductive housing and a thermoelectric controller, a plurality of optical fibers, and one or more optical elements to direct light emitted by the optical fibers to illuminate a flow cell. The housing is configured to attach to a flow cell.
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公开(公告)号：US20220294178A1
公开(公告)日：2022-09-15
申请号：US17464881
申请日：2021-09-02
Applicant: National Yang Ming Chiao Tung University
Inventor： Yung-Fu Chen , Hsing-Chih Liang , Chia-Han Tsou
Abstract: The invention discloses a visible laser apparatus including a linear cavity. The linear cavity includes along the first direction: a first optical component, a gain medium, a second optical component, a Raman crystal, a double-harmonic crystal and a third optical component. The first optical component receives an incident pumping light in the first direction. The gain medium receives the pumping light from the first optical component, and generates a first infrared base laser having a first wavelength. The second optical component has a first high transmittance in a first wave band including the first wavelength in the first and the second directions. The Raman crystal receives the first infrared base laser, and generates a second infrared base laser having a second wavelength. The double-harmonic crystal receives the first and the second infrared base lasers, and generates a visible laser light having a third wavelength.
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