公开(公告)号：US20240332907A1

公开(公告)日：2024-10-03

申请号：US18127983

申请日：2023-03-29

申请人： Tin Komljenovic ,  Zeyu Zhang ,  Chong Zhang ,  Minh Tran

发明人： Tin Komljenovic ,  Zeyu Zhang ,  Chong Zhang ,  Minh Tran

IPC分类号： H01S5/22 ,  H01S5/06 ,  H01S5/10

CPC分类号： H01S5/2228 ,  H01S5/0612 ,  H01S5/1014

摘要： A device is made up of an active structure attached to a substrate, the active structure having a facet through which light couples between the active structure and another structure attached to the substrate; and an active region comprising a quantum well region that includes a sub-region, adjacent the facet, configured to undergo QWI in response to heat. The active structure also contains a heating element, positioned close to the facet and operable such that heat generated by the heating element raises a temperature of the sub-region of the active region near the facet high enough to activate QWI in that sub-region, in turn causing a reduction in optical absorption, without raising temperatures in any other portion of the active region enough to cause significant thermal stress at any interface between the substrate and the active structure.

公开(公告)号：US12100934B2

公开(公告)日：2024-09-24

申请号：US18085643

申请日：2022-12-21

申请人： University of Maryland, College Park

发明人： Mario Dagenais ,  Yang Zhang

IPC分类号： H01S5/00 ,  H01S5/02326 ,  H01S5/0237 ,  H01S5/06 ,  H01S5/10 ,  H01S5/14

CPC分类号： H01S5/141 ,  H01S5/02326 ,  H01S5/0237 ,  H01S5/0612 ,  H01S5/1032

摘要： A laser system for generating a narrow linewidth semiconductor light beam includes a substrate, a gain chip affixed on the substrate and configured to amplify light beam, and an optical feedback photonic chip affixed on the substrate, optically coupled to the gain chip, and configured to output light beam, which has a narrow linewidth around a resonant frequency of the optical feedback photonic chip, to the gain chip.

公开(公告)号：US12099267B2

公开(公告)日：2024-09-24

申请号：US18317879

申请日：2023-05-15

申请人： ROCKLEY PHOTONICS LIMITED

发明人： Abu Thomas ,  Albert Benzoni ,  Jacob Levy ,  Thomas Pierre Schrans ,  Andrea Trita ,  Guomin Yu ,  Aaron John Zilkie

IPC分类号： G02F1/01 ,  G02B6/12 ,  G02F1/017 ,  G02F1/025 ,  H01S5/00 ,  H01S5/026 ,  H01S5/10 ,  H01S5/12 ,  G02F1/015 ,  H01S5/227 ,  H01S5/343 ,  H01S5/50

CPC分类号： G02F1/01708 ,  G02B6/12004 ,  G02F1/025 ,  H01S5/0085 ,  H01S5/026 ,  H01S5/0265 ,  H01S5/101 ,  H01S5/12 ,  G02F1/0157 ,  G02F2202/102 ,  G02F2203/70 ,  H01S5/227 ,  H01S5/34306 ,  H01S5/50

摘要： A photonic chip. In some embodiments, the photonic chip includes a waveguide; and an optically active device comprising a portion of the waveguide. The waveguide may have a first end at a first edge of the photonic chip; and a second end, and the waveguide may have, everywhere between the first end and the second end, a rate of change of curvature having a magnitude not exceeding 2,000/mm2.

公开(公告)号：US20240297480A1

公开(公告)日：2024-09-05

申请号：US18447624

申请日：2023-08-10

申请人： National Time Service Center (NTSC), Chinese Academy of Science (CAS)

发明人： Shougang ZHANG ,  Tenghui YANG ,  Enxue Yun ,  Qiang HAO ,  Guobin LIU ,  Yuping GAO

IPC分类号： H01S5/0687 ,  H01S3/094 ,  H01S3/109 ,  H01S5/00 ,  H01S5/04 ,  H01S5/10

CPC分类号： H01S5/0687 ,  H01S3/094076 ,  H01S3/1095 ,  H01S5/0071 ,  H01S5/041 ,  H01S5/1092

摘要： Provided are a method and a system for bichromatic laser frequency stabilization based on differential detection of coexisting Lamb-dips and Lamb-peaks under multiple interactions. Based on multiple interactions between a multichromatic laser beam and a quantum resonance system in a Doppler-free configuration, and by setting the relative polarization directions and Raman phases between the pump and probe light which propagate in opposite directions and overlap in space, Lamb-dips and Lamb-peaks signals are generated; and by subtracting one from the other, a Doppler-free quantum resonance signal with high rejection of Doppler-broadening background and common-mode noise is obtained. The Doppler-free quantum resonance signal obtained in the present application has improved contrast and signal-to-noise ratio, and maintained narrow linewidth, making it applicable for precision spectral measurement as well as for laser frequency locking.

公开(公告)号：US12074406B2

公开(公告)日：2024-08-27

申请号：US18557083

申请日：2022-04-21

申请人： BEIJING QBOSON QUANTUM TECHNOLOGY CO., LTD.

发明人： Kai Wen ,  Yin Ma

IPC分类号： H01S3/00 ,  G02F1/35 ,  G06F17/11 ,  H01S3/067 ,  H01S5/10

CPC分类号： H01S3/0092 ,  G02F1/353 ,  G06F17/11 ,  H01S3/0085 ,  H01S3/06716 ,  H01S5/1075

摘要： A coherent Ising machine based on on-chip whispering gallery mode optical microcavity mainly adopts an optical microcavity integrated with a second laser processing apparatus (a nonlinear crystal), so as to archive an on-chip structure, which, compared with the fiber loop structure in the prior art, has the integration level optimized significantly.

公开(公告)号：US12066941B2

公开(公告)日：2024-08-20

申请号：US17961146

申请日：2022-10-06

申请人： SiFive, Inc.

发明人： John Ingalls ,  Wesley Waylon Terpstra ,  Henry Cook ,  Leigang Kou

IPC分类号： G06F12/08 ,  G01N29/24 ,  G06F12/0811 ,  G06F12/0813 ,  G06F12/0846 ,  G06F12/0891 ,  G06F12/123 ,  H01S5/042 ,  H01S5/06 ,  H01S5/10

CPC分类号： G06F12/0811 ,  G01N29/2418 ,  G06F12/0813 ,  G06F12/0846 ,  G06F12/0891 ,  G06F12/123 ,  H01S5/0427 ,  H01S5/0612 ,  H01S5/1042 ,  H01S5/1096 ,  G06F2212/1021

摘要： Described are methods and a system for atomic memory operations with contended cache lines. A processing system includes at least two cores, each core having a local cache, and a lower level cache in communication with each local cache. One local cache configured to request a cache line to execute an atomic memory operation (AMO) instruction, receive the cache line via the lower level cache, receive a probe downgrade due to other local cache requesting the cache line prior to execution of the AMO, and send the AMO instruction to the lower level cache for remote execution in response to the probe downgrade.

公开(公告)号：US12062886B2

公开(公告)日：2024-08-13

申请号：US17392899

申请日：2021-08-03

申请人： FURUKAWA ELECTRIC CO., LTD.

发明人： Yasutaka Higa ,  Yasumasa Kawakita ,  Kazuaki Kiyota

IPC分类号： H01S5/10 ,  G02B6/12 ,  G02B6/293 ,  H01S5/026 ,  H01S5/12

CPC分类号： H01S5/101 ,  G02B6/12007 ,  G02B6/29338 ,  G02B6/29344 ,  H01S5/026 ,  H01S5/12 ,  H01S5/1007

摘要： An optical functional device includes: first and second optical couplers each including a multi-mode interferometer waveguide portion having a first end portion and a second end portion, two units of first input/output ports and two units of second input/output ports; and first and second arc-shaped waveguides each optically connecting one of the first and second input/output ports of the first and second optical coupler and one of the first and second input/output ports of the second optical coupler, respectively. Further, the first optical coupler, the second optical coupler, the first arc-shaped waveguide, and the second arc-shaped waveguide constitute a ring resonator, and each of the multi-mode waveguide portions of the first optical coupler and the second optical coupler have a narrow portion, an average width of the narrow portion in a longitudinal direction being narrower than widths at the first end portion and the second end portion.

公开(公告)号：US12062884B2

公开(公告)日：2024-08-13

申请号：US17182976

申请日：2021-02-23

申请人： Electronics and Telecommunications Research Institute

发明人： Oh Kee Kwon ,  Kisoo Kim ,  Su Hwan Oh ,  Chul-Wook Lee

IPC分类号： H01S5/0625 ,  H01S5/026 ,  H01S5/042 ,  H01S5/068 ,  H01S5/183 ,  H01S5/227 ,  H01S5/10

CPC分类号： H01S5/06256 ,  H01S5/026 ,  H01S5/04256 ,  H01S5/0625 ,  H01S5/068 ,  H01S5/227 ,  H01S5/06258 ,  H01S5/1007 ,  H01S5/18363

摘要： Provided is a laser device according to embodiments of the inventive concept comprising a substrate including a gain region, a phase control region, and a tuning region arranged along a first direction, the substrate having an air gap which extends from the phase control region to the tuning region, an upper clad layer on the substrate, a waveguide structure extending in the first direction between the upper clad layer and the substrate, a first upper electrode disposed on the upper surface of the upper clad layer of the tuning region, and a lower electrode disposed on a lower surface of the substrate and extending from the gain region to the tuning region, wherein the air gap may have a larger width than the waveguide in a second direction crossing the first direction.

公开(公告)号：US20240266806A1

公开(公告)日：2024-08-08

申请号：US18599033

申请日：2024-03-07

申请人： INNOLIGHT TECHNOLOGY (SUZHOU) LTD.

发明人： Xuezhe ZHENG ,  Yinchao DU ,  Min TENG

IPC分类号： H01S5/40 ,  H01S5/042 ,  H01S5/10

CPC分类号： H01S5/4025 ,  H01S5/0425 ,  H01S5/1032

摘要： A laser capable of reducing the difficulty of a wavelength tuning process, a fabrication method therefor, and a laser device. The laser comprises: an active light-emitting structure used for emitting light; a silicon-based structure which is bonded to the active light-emitting structure, and which comprises a silicon-based waveguide and at least two composite gratings, wherein the composite gratings are opposite to the active light-emitting structure and are formed in the silicon-based waveguide. Each composite grating comprises one primary grating and a plurality of secondary gratings, the secondary gratings are periodically arranged to form the primary grating, and the primary gratings in at least a portion of the composite gratings have different grating periods from that of the primary gratings in other composite gratings. The silicon-based structure and the active light-emitting structure form at least two laser units, and each laser unit corresponds to one composite grating.

公开(公告)号：US20240258769A1

公开(公告)日：2024-08-01

申请号：US18162517

申请日：2023-01-31

申请人： Honeywell International Inc.

发明人： Matthew Wade Puckett ,  Neal Eldrich Solmeyer ,  Karl D. Nelson ,  Jianfeng Wu ,  Mary Salit

IPC分类号： H01S5/14 ,  H01S3/10 ,  H01S5/10 ,  H01S5/12 ,  H01S5/323

CPC分类号： H01S5/141 ,  H01S3/10092 ,  H01S5/1007 ,  H01S5/12 ,  H01S5/323 ,  H01S5/50

摘要： A laser device comprises a gain chip that emits light, and a photonics chip optically coupled to the gain chip. The photonics chip comprises a waveguide platform including an input waveguide optically coupled to the gain chip. The input waveguide optical communicates with a cascaded arrangement of waveguide grating structures on the waveguide platform. The grating structures comprise a first grating structure that produces a single resonance frequency within a stopband, and a second grating structure in optical communication with the first grating structure. The second grating structure diffracts a narrowband resonance, overlapping with the stopband of the first grating structure, back toward the gain chip, while passing any light outside of the stopband of the first grating structure out of the waveguide platform. The grating structures cooperate to yield a single resonance frequency that feeds back into the gain chip to produce a self-injection lock for the laser device.