公开(公告)号：US20240213734A1

公开(公告)日：2024-06-27

申请号：US18601035

申请日：2024-03-11

申请人： Boston Scientific Scimed, Inc.

发明人： Jian James ZHANG ,  Baocheng YANG ,  Xirong YANG ,  Hyun Wook KANG ,  Brian CHENG ,  Peter BULL ,  Rongwei Jason XUAN ,  Thomas C. HASENBERG

IPC分类号： H01S3/091 ,  A61B17/00 ,  A61B18/26 ,  H01S3/06 ,  H01S3/092 ,  H01S3/16

CPC分类号： H01S3/0912 ,  A61B18/26 ,  H01S3/061 ,  H01S3/092 ,  H01S3/161 ,  H01S3/1643 ,  A61B2017/00154

摘要： Techniques are provided for controlling an output laser pulse signal of a medical device. A control device defines a time duration of capacitive discharge to a laser device. The time duration corresponds to an intended energy of the output laser pulse signal. The control device generates a plurality of sub-pulse control signals. The sub-pulse control signals define a series of capacitive discharge events of the capacitor bank. The control device modulates one or more of a sub-pulse control signal period or a sub-pulse time duration of the sub-pulse control signals to modify the capacitive discharge of the capacitor bank to the laser device during the time duration.

公开(公告)号：USRE50026E1

公开(公告)日：2024-06-25

申请号：US16741186

申请日：2020-01-13

申请人： NKT Photonics A/S

发明人： Paulo Almeida ,  John Redvers Clowes ,  Pascal Dupriez ,  Anatoly Borisovich Grudinin

IPC分类号： H01S3/10 ,  H01S3/067 ,  H01S3/1112 ,  H01S3/13 ,  H01S3/00 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/16 ,  H01S3/23

CPC分类号： H01S3/06754 ,  H01S3/1112 ,  H01S3/0057 ,  H01S3/094003 ,  H01S3/0941 ,  H01S3/1618 ,  H01S3/2383 ,  H01S2301/08

摘要： A method of tuning the time duration of laser output pulses, the method including spectrally dispersing optical pulses and further comprising providing an optical pulse having a time duration and a spectral bandwidth; spectrally dispersing (243, 245) the optical pulse so as to provide a selected change in the time duration of the pulse responsive to the spectral bandwidth of the pulse; outputting (226) an optical output pulse having a first time duration that is responsive to the selected change in time duration; providing another optical pulse; changing the amount of spectral bandwidth of the another optical pulse (272) to be different than that of the optical pulse or changing the amount of spectral dispersion so that spectrally dispersing the another optical pulse provides a change in time duration that is different than the selected change; and outputting (226) another optical output pulse having a second time duration that is responsive to the different change in time duration, the second time duration of the another optical output pulse being different than the first time duration of the optical output pulse.

公开(公告)号：US20240204475A1

公开(公告)日：2024-06-20

申请号：US18530590

申请日：2023-12-06

申请人： KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY ,  KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

发明人： Hansuek LEE ,  In Hwan DO ,  Daewon SUK ,  Jae Hoon LEE ,  Hyun-Gue HONG ,  Dai-Hyuk YU

IPC分类号： H01S3/30 ,  H01S3/094 ,  H01S3/131 ,  H01S3/067 ,  H01S3/16

CPC分类号： H01S3/302 ,  H01S3/094053 ,  H01S3/1312 ,  H01S3/06716 ,  H01S3/1608 ,  H01S2301/085

摘要： An apparatus for generating optical frequency combs and solitons includes a pump laser configured to output a pump signal with a pump wavelength, and a resonator module connected to the pump laser through an optical path and including a resonator and a waveguide structured to adjust a degree of coupling. The resonator generates at least one of pump combs at the pump wavelength, Raman combs at a Raman scattering wavelength or solitons, through different nonlinear phenomena.

公开(公告)号：US20240195137A1

公开(公告)日：2024-06-13

申请号：US18529332

申请日：2023-12-05

申请人： Chongqing Huapu Information Technology Co.,Ltd. ,  Chongqing Huapu Scientific Instrument Co.,Ltd. ,  Chongqing Huapu Intelligent Equipment Co., Ltd. ,  Yunnan Huapu quantum Material Co., Ltd ,  ROI Optoelectronics Technology CO, LTD. ,  GuangDong ROI Optoelectronics Technology Co., Ltd. ,  Chongqing Institute of East China Normal University ,  East China Normal University

发明人： Heping ZENG ,  Zhengru GUO ,  Xiao WANG ,  Xiaowei QIAN ,  Tianjun YAO ,  Tingting LIU ,  Mengyun HU

IPC分类号： H01S3/00 ,  H01S3/10 ,  H01S3/16

CPC分类号： H01S3/0057 ,  H01S3/10084 ,  H01S3/1618

摘要： The present disclosure provides a self-similar regenerative amplification method and an apparatus. The apparatus includes a broadband seed source, a spectrum shaping broader, a self-similar regenerative amplifier and a pulse compressor disposed in order of a light path. The spectrum shaping broader includes a time domain broader and a spectrum shaper. The time domain broader is configured to broaden the seed pulses, and fine-tune a width of the seed pulse. The spectrum shaper is configured to perform spectrum shaping on the broadened pulses to obtain saddle chirped pulses. The pulse regenerative amplification component includes a gain crystal and a nonlinear crystal. The self-similar regenerative amplifier receives the saddle chirped pulses, performs multiple stepwise amplifications and multiple nonlinear spectrum broadenings back and forth on the saddle chirped pulses, and output high-energy chirped pulses to the pulse compressor.

公开(公告)号：US12003073B2

公开(公告)日：2024-06-04

申请号：US18198520

申请日：2023-05-17

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

发明人： Dong Hoon Song ,  Hong-Seok Seo ,  Chul Huh

IPC分类号： H01S3/1115 ,  H01S3/081 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/106 ,  H01S3/13 ,  H01S3/131 ,  H01S3/16

CPC分类号： H01S3/1115 ,  H01S3/0816 ,  H01S3/094096 ,  H01S3/09415 ,  H01S3/10053 ,  H01S3/1068 ,  H01S3/1305 ,  H01S3/1312 ,  H01S3/1625 ,  H01S3/1636

摘要： A femtosecond pulse laser apparatus includes a pump light source configured to provide a pump light, a gain medium configured to obtain a gain of a laser light using the pump light, a first curved mirror and a second curved mirror, which are provided at both sides of the gain medium, an output mirror configured to transmit a portion of the laser light and reflect the other portion of the laser light to the gain medium, a mode locking portion configured to generate a femtosecond pulse of the laser light, and an acoustic wave generator configured to provide an acoustic wave into the gain medium so as to adjust self-phase modulation of the laser light.

公开(公告)号：US20240178629A1

公开(公告)日：2024-05-30

申请号：US18431173

申请日：2024-02-02

申请人： SUBCOM, LLC

发明人： Dmitri G. Foursa ,  Alexei N. Pilipetskii ,  Maxim A. Bolshtyansky ,  Gregory M. Wolter

IPC分类号： H01S3/067 ,  G02B27/10 ,  H01S3/00 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/16 ,  H01S3/23 ,  H04B10/294

CPC分类号： H01S3/06758 ,  G02B27/1006 ,  H01S3/0064 ,  H01S3/06766 ,  H01S3/0677 ,  H01S3/0941 ,  H01S3/10023 ,  H01S3/1608 ,  H01S3/2391 ,  H04B10/2941 ,  H01S2301/04

摘要： Techniques for improving gain equalization in C- and L-band (“C+L”) erbium-doped fiber amplifier (EDFAs) are provided. For example, the C- and L-band amplification sections of a C+L EDFA may be separated and configured in a parallel arrangement or a serial arrangement. For both the parallel and serial arrangements, the C- and L-band amplification sections may share a common gain flattening filter (GFF) or each amplification section may include and employ a separate GFF. Moreover, in some examples, an “interstage” L-band GFF may be located before or upstream of the L-band amplification section such that the L-band optical signal is gain-equalized or flattened prior to the L-band amplification section amplifying the L-band.

公开(公告)号：US20240162675A1

公开(公告)日：2024-05-16

申请号：US17987015

申请日：2022-11-15

申请人： II-VI Delaware, Inc.

发明人： Ian Peter McClean ,  Martin R. Williams

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

CPC分类号： H01S3/094023 ,  H01S3/067 ,  H01S3/094042 ,  H01S3/1608 ,  H01S3/2391 ,  H01S2302/00

摘要： An arrangement for generating amplified spontaneous emission (ASE) over the combination of the C-band and L-band wavelength ranges is proposed, based on a reflective topology that reduces the number of individual components (compared with separate C-band and L-band ASE sources) required to generate the broadband ASE output. A pair of ASE generators are used, where at least one of the generators is configured to include a reflective element at a termination of the included gain fiber. The inclusion of the reflective element allows for the generated emission to pass through the gain fiber twice (emulating the operation of a conventional dual-stage ASE source). A long wavelength portion of the ASE created by a first ASE generator may be used as a seed input by the remaining ASE generator of the pair to further increase the efficiency of extending the ASE along the L-band wavelength range.

公开(公告)号：US11916348B2

公开(公告)日：2024-02-27

申请号：US16943713

申请日：2020-07-30

申请人： Alessandro Corsi ,  Sophie La Rochelle ,  Junho Chang

发明人： Alessandro Corsi ,  Sophie La Rochelle ,  Junho Chang

IPC分类号： H01S3/067 ,  H01S3/16 ,  G02B6/02 ,  G02B6/036 ,  G02B6/024

CPC分类号： H01S3/06729 ,  H01S3/06712 ,  H01S3/06716 ,  H01S3/06754 ,  H01S3/1608 ,  G02B6/024 ,  G02B6/02285 ,  G02B6/03627

摘要： An optical fiber comprises a core having an elliptical cross section and a cladding having a circular cross section. The core has an aspect ratio between 2 and 40. The core and the cladding have a common central axis with the core being enclosed by the cladding. The difference of a refractive index of the cladding to a refractive index of the core is between 1×10−2 and 1.5×10−1. A trench is located between the core and the cladding. The trench has a uniform width and encircles the core. The refractive index of the trench is lower than the refractive index of the cladding.

公开(公告)号：US20240063598A1

公开(公告)日：2024-02-22

申请号：US17891009

申请日：2022-08-18

申请人： Raytheon Company

发明人： Fabio Di Teodoro ,  David A. Rockwell

IPC分类号： H01S3/067 ,  H01S3/094 ,  H01S3/10 ,  H01S3/16 ,  H01S3/30

CPC分类号： H01S3/06716 ,  H01S3/094007 ,  H01S3/10023 ,  H01S3/10084 ,  H01S3/1616 ,  H01S3/302

摘要： A high-power Raman fiber laser includes: a seed laser; a plurality of pump lasers, each including a cladding and comprising of thulium-doped fiber laser (TDFL) and configured to operate in a 1935-2020 nm spectral window; a pump/seed combiner to combine outputs of the pump lasers and output of the seed laser and having a tapered portion including a cladding; and a Raman fiber amplifier having a core and a cladding surrounding the core, the seed laser is launched into the core, and pump laser output beams are launched into the cladding, to amplify the seed laser to produce an amplified output signal, and a brightness of the cladding of the Raman fiber amplifier is matched to a combined brightness of the plurality of pump lasers.

公开(公告)号：US11896300B2

公开(公告)日：2024-02-13

申请号：US17121815

申请日：2020-12-15

申请人： Boston Scientific Scimed, Inc.

发明人： Werner Falkenstein ,  Michael Schubert ,  Stephan Dittmar ,  Anna Butsch ,  Thomas Kremser

IPC分类号： A61B18/20 ,  A61B18/26 ,  H01S3/10 ,  H01S3/102 ,  A61B18/22 ,  A61B18/00 ,  A61B18/24 ,  A61B17/00 ,  H01S3/042 ,  H01S3/16 ,  H01S3/131 ,  H01S3/04 ,  H01S3/093

CPC分类号： A61B18/20 ,  A61B18/26 ,  H01S3/1024 ,  H01S3/10038 ,  A61B18/245 ,  A61B2017/00176 ,  A61B2018/0066 ,  A61B2018/00642 ,  A61B2018/00702 ,  A61B2018/00714 ,  A61B2018/00791 ,  A61B2018/205545 ,  A61B2018/2261 ,  A61B2018/2277 ,  H01S3/042 ,  H01S3/0407 ,  H01S3/093 ,  H01S3/1312 ,  H01S3/1616 ,  H01S3/1643

摘要： A laser system may include a controller configured to direct a plurality of temporally spaced-apart electrical pulses to a device that optically pumps a lasing medium, and a lasing medium configured to output a quasi-continuous laser pulse in response to the optical pumping. The plurality of temporally spaced-apart electrical pulses may include (a) a first electrical pulse configured to excite the lasing medium to an energy level below a lasing threshold of the lasing medium, and (b) multiple second electrical pulses following the first electrical pulse. The quasi-continuous laser pulse is output in response to the multiple second electrical pulses.