公开(公告)号：US20250062589A1

公开(公告)日：2025-02-20

申请号：US18806608

申请日：2024-08-15

Applicant: YALE UNIVERSITY

Inventor： Hong Tang ,  Yubo Wang ,  Yu Guo ,  Jorge Holguin-Lerma

IPC: H01S3/16 ,  G02B6/42 ,  H01S3/08 ,  H01S3/0941

Abstract: Provided herein are a method of preparing a Titanium:Sapphire (Ti:Sa) wafer and a photonic circuit integrated (PIC) Titanium:Sapphire (Ti:Sa) laser. The method includes depositing a titanium layer on a top surface of a first sapphire substrate; positioning a second sapphire substrate on the titanium layer, forming a face-to-face configuration with the titanium layer between the first and second sapphire substrates; annealing the first and second sapphire substrates in the face-to-face configuration, forming an annealed substrate; and polishing the annealed substrate, forming a polished substrate. The PIC-Ti:Sa laser includes a substrate; a waveguide formed on the substrate, the waveguide including a microring portion; a Ti:Sa layer formed over the microring portion of the waveguide, the Ti:Sa layer and the microring portion of the waveguide forming a microring cavity; and a laser source coupled to the waveguide. Also provided herein are methods of forming a photonic circuit integrated mode-locked Ti:Sa laser.

公开(公告)号：US20250062584A1

公开(公告)日：2025-02-20

申请号：US18800413

申请日：2024-08-12

Applicant: The Government of the United States of America, as represented by the Secretary of the Navy

Inventor： Augustus X. Carlson ,  Rafael R. Gattass ,  Leslie Brandon Shaw ,  Jasbinder S. Sanghera

IPC: H01S3/00 ,  G02F1/35 ,  H01S3/067 ,  H01S3/16

Abstract: Methods and systems providing laser outputs are disclosed. A first laser input from a first pump laser source has a first average power, and a second laser input from a second pump laser source has a second average power. A first laser output is generated based on conversion of the first laser input and the second laser input at the first state. After generating the first laser output, the second laser input is provided at a second state with the second average power remaining unchanged. After generating the first laser output, a second laser output is generated based on conversion of the first laser input and the second laser input at the second state. Combined powers of the first laser input and the second laser input remain the same when generating the first and second laser outputs, but powers of the first and second laser outputs are different.

公开(公告)号：US12193734B2

公开(公告)日：2025-01-14

申请号：US17886685

申请日：2022-08-12

Applicant: CYNOSURE, LLC

Inventor： Mirko Georgiev Mirkov ,  Rafael Armando Sierra

IPC: A61B18/20 ,  A61N5/06 ,  H01S3/06 ,  H01S3/08018 ,  H01S3/094 ,  H01S3/102 ,  H01S3/1106 ,  H01S3/1109 ,  A61B18/00 ,  A61N5/067 ,  H01S3/00 ,  H01S3/08 ,  H01S3/093 ,  H01S3/107 ,  H01S3/16

Abstract: Methods, systems and apparatus are disclosed for delivery of pulsed treatment radiation by employing a pump radiation source generating picosecond pulses at a first wavelength, and a frequency-shifting resonator having a lasing medium and resonant cavity configured to receive the picosecond pulses from the pump source at the first wavelength and to emit radiation at a second wavelength in response thereto, wherein the resonant cavity of the frequency-shifting resonator has a round trip time shorter than the duration of the picosecond pulses generated by the pump radiation source. Methods, systems and apparatus are also disclosed for providing beam uniformity and a sub-harmonic resonator.

公开(公告)号：US20250007239A1

公开(公告)日：2025-01-02

申请号：US18827906

申请日：2024-09-09

Applicant: TriEye Ltd.

Inventor： Yoni Prosper Shalibo ,  Ariel Danan ,  Omer Kapach

IPC: H01S5/06 ,  B32B18/00 ,  C04B35/495 ,  G01S7/484 ,  H01S3/06 ,  H01S3/0941 ,  H01S3/113 ,  H01S3/131 ,  H01S3/16 ,  H01S5/00

Abstract: Systems and methods for imaging in the short wave infrared (SWIR), photodetectors with low dark current and associated circuits for reducing dark currents and methods for generating image information based on data of a photodetector array. A SWIR imaging system may include a pulsed illumination source operative to emit radiation pulses in the SWIR band towards a target resulting in reflected radiation from the target; (b) an imaging receiver including a plurality of Ge PDs operative to detect the reflected SWIR radiation and a controller, operative to control activation of the receiver for an integration time during which the accumulated dark current noise does not exceed the time independent readout noise.

公开(公告)号：US12166328B2

公开(公告)日：2024-12-10

申请号：US17027526

申请日：2020-09-21

Applicant: Lawrence Livermore National Security, LLC

Inventor： Stephen A. Payne ,  Nerine J. Cherepy ,  Eric B. Duoss ,  Ivy Krystal Jones ,  Zachary M. Seeley ,  Cheng Zhu

IPC: H01S3/06 ,  H01S3/091 ,  H01S3/0941 ,  H01S3/113 ,  H01S3/16

Abstract: In one aspect, a composition of matter includes: a plurality of particles in a thixotropic suspension to form an ink, where the plurality of particles are present in an amount of at least about 20 vol %, and the plurality of particles include: a first host medium material containing at least one of: one or more lasing species dopants; and one or more other dopant species; and a second host medium material containing at least one other dopant species. The composition of matter further includes a liquid phase present in an amount greater than 20 vol % and less than about 80 vol %, where the liquid phase comprises at least one of: at least one surfactant; at least one polar organic solvent; and at least one binder.

公开(公告)号：US20240396286A1

公开(公告)日：2024-11-28

申请号：US18369668

申请日：2023-09-18

Applicant: FUJIAN HITRONICS TECHNOLOGIES, INC.

Inventor： Guanglei Ding ,  Xiaxiong Tang ,  Shaofeng Zhang ,  Jiwu Ling

IPC: H01S3/137 ,  H01S3/067 ,  H01S3/081 ,  H01S3/16

Abstract: An intracavity frequency doubling fiber laser includes pump sources, optical beam combiners and a bidirectional optical amplifier; a first fiber collimator, a first optical polarization rotating device, a polarizer, a laser frequency doubling device and a laser cavity mirror being arranged on one side of the bidirectional optical amplifier along an optical path in sequence; a second fiber collimator, a polarization beam splitting device, a second optical polarization rotating device and a reflection device being arranged on the other side of the bidirectional optical amplifier along the optical path in sequence; the disclosure has small size and low cost, which can output different wavebands of frequency-doubled lasers by replacing components.

公开(公告)号：US20240376630A1

公开(公告)日：2024-11-14

申请号：US18781924

申请日：2024-07-23

Applicant: MEISHAN BOYA ADVANCED MATERIALS CO., LTD.

Inventor： Yu WANG ,  Peng GU ,  Zhenxing LIANG

IPC: C30B7/10 ,  C30B7/14 ,  C30B29/28 ,  H01S3/067 ,  H01S3/16

Abstract: Disclosed are a method and a device for preparing a crystal cladding. The method may include preparing an amorphous material; melting the amorphous material to form an amorphous melt; submerging an optical fiber core in the amorphous melt; forming an amorphous cladding around a periphery of the optical fiber core; and obtaining the crystal cladding by performing a crystallization process on the amorphous cladding. The device may include an amorphous material preparation component configured to prepare an amorphous material; an amorphous cladding preparation component configured to melt the amorphous material to form an amorphous melt, submerge an optical fiber core in the amorphous melt, and form an amorphous cladding around a periphery of the optical fiber core based on the amorphous melt and the optical fiber core; and a crystal cladding preparation assembly configured to perform a crystallization process on the amorphous cladding to obtain a crystal cladding.

公开(公告)号：US20240347997A1

公开(公告)日：2024-10-17

申请号：US18330656

申请日：2023-06-07

Applicant: Lumentum Operations LLC

Inventor： Ning LIU ,  Guan SUN ,  Matthew KUTSURIS ,  Gongwen ZHU

IPC: H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H01S3/23

CPC classification number: H01S3/06733 ,  H01S3/0675 ,  H01S3/094007 ,  H01S3/1603 ,  H01S3/2308

Abstract: A master oscillator power amplifier system includes a seed laser oscillator and a master laser oscillator. The seed laser oscillator includes a first oscillator fiber with a first laser cavity configured to convert a first pump light into a first seed laser light in a fundamental mode as the first pump light interacts with a fiber core of the first oscillator fiber. The master laser oscillator includes a second oscillator fiber with second laser cavity configured to receive and convert the first seed laser light into a second seed laser light in the fundamental mode as the first seed laser light interacts with a fiber core of the second oscillator fiber, and receive and convert a second pump light into a primary laser light in the fundamental mode as the second pump light interacts with the fiber core of the second oscillator fiber.

公开(公告)号：US12117646B2

公开(公告)日：2024-10-15

申请号：US17333060

申请日：2021-05-28

Applicant: University of Southampton

Inventor： Francesco Poletti ,  Seyedmohammad Abokhamis Mousavi

IPC: G02B6/02 ,  G02B6/024 ,  G02B6/255 ,  H01S3/067 ,  H01S3/16

CPC classification number: G02B6/02328 ,  G02B6/02357 ,  G02B6/024 ,  G02B6/255 ,  H01S3/06712 ,  H01S3/06729 ,  H01S3/1618

Abstract: An anti-resonant hollow-core fiber comprising a first tubular, cladding element which defines an internal cladding surface, a plurality of second tubular elements which are attached to the cladding surface and together define a core with an effective radius, the second tubular elements being arranged in spaced relation and adjacent ones of the second tubular elements having a spacing therebetween, and a plurality of third tubular elements, each nested within a respective one of the second tubular elements.

公开(公告)号：US20240332883A1

公开(公告)日：2024-10-03

申请号：US18193864

申请日：2023-03-31

Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.

Inventor： Anthony J. Catanese ,  Kevin T Werner ,  Michael L Lemons ,  Ezra S Allee ,  Yannick C. Morel

IPC: H01S3/00 ,  G02F1/35 ,  G02F1/365 ,  H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/13 ,  H01S3/16

CPC classification number: H01S3/0057 ,  G02F1/3513 ,  G02F1/365 ,  H01S3/0092 ,  H01S3/06716 ,  H01S3/094011 ,  H01S3/094061 ,  H01S3/0941 ,  H01S3/13013 ,  H01S3/1616 ,  G02F2203/11 ,  H01S2301/085 ,  H01S2302/00

Abstract: Ultrashort pulsed laser systems are described. In one example, a pulsed laser system includes a source laser configured to emit a pulsed source laser beam, a splitter configured to split the source laser beam into first and second input laser beams, a first amplifier module configured to amplify the first input laser beam using chirped pulse amplification (CPA) and to produce, at a first output port, a first output laser beam in a first spectral range based on soliton self-frequency shift (SSFS) in the first amplifier module, a second amplifier module configured to amplify the second input laser beam using CPA and to produce an intermediate beam based on SSFS in the second amplifier module, and a mid-infrared fiber configured to receive the intermediate beam and to produce, at a second output port, a second output laser beam in a second spectral range based SSFS in the mid-infrared fiber.