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Patent Agency Ranking
公开(公告)号：US20210149113A1
公开(公告)日：2021-05-20
申请号：US17138878
申请日：2020-12-30
Inventor： Jianhong SHI , Dapeng YAN , Cheng LI , Sha LI , Haowei HU , Jianming WANG , Ming CHEN
Abstract: A method for preventing feedback light of a laser, includes fusion-splicing a target fiber to an output fiber of a laser, so that laser lights generated by the laser are output from the target fiber. A refractive index of a core of the output fiber of the laser is less than a refractive index of a core of the target fiber. When a feedback light of a laser light of the laser is reversely transmitted to a fusion-splicing surface through the target fiber, total reflection occurs due to a refractive index difference on the fusion-splicing surface, so that the feedback light is transmitted along the transmission direction of the laser light, and is prevented from entering the output fiber along the reverse direction of the laser light and further entering the laser's resonant cavity to damage the laser component or burn out the gain fiber.
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2.发明申请公开(公告)号：US20210119406A1
公开(公告)日：2021-04-22
申请号：US17138879
申请日：2020-12-30
Inventor： Wei JIANG , Dapeng YAN , Yong RUAN , Jianhong SHI , Lidong JIANG
Abstract: A multi-module fiber laser capable of monitoring abnormalities of optical modules in real time. In the multi-module fiber laser, the CAN bus is employed to directly obtain whether each of the slave control modules or the master control module is in normal working condition, so that the CAN bus is at the status level corresponding to whether all modules are in normal working state, namely, the CAN bus that is configured to transmit the light control signal issued by the master control module. The status level of the slave control module or the combiner module is also transmitted via the CAN bus, so that all the slave control modules can quickly put themselves in the corresponding working state according to the status level of the CAN bus.
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公开(公告)号：US20220252892A1
公开(公告)日：2022-08-11
申请号：US17626797
申请日：2019-12-13
Inventor： Xiang SHEN , Dapeng YAN , Rong LI , Qixin ZHU , Zhongya HUANG , Jianhong SHI , LILEI TANG , Wenli ZHAO , Xing LEI , Cheng LI
Abstract: An optical fiber laser coupler, comprising a laser input optical cable, a laser shaping and coupling device, and a multi-beam-mode energy transmission fiber (205). The multi-beam-mode energy transmission fiber (205) comprises a circular fiber core (105) and annular fiber cores (106, 107), and each annular fiber core (106, 107) is coaxial with the circular fiber core (105). A fluorine-doped layer (109) is disposed between the circular fiber core (105) and the annular fiber core (106, 107), and the fluorine-doped layer (109) is also disposed between adjacent annular fiber cores (106, 107). An adjustable collimating lens group (203) and an adjustable focusing lens group (204) of the laser shaping and coupling device can horizontally move along a direction of a laser beam in a housing of the laser shaping and coupling device. The laser shaping and coupling device is configured to couple and input the laser beam input by the laser input optical cable into different fiber cores of the multi-beam-mode energy transmission fiber (205), and obtain output laser beams of different beam modes. The optical fiber laser coupler of the present application can independently implement real-time switching between different beam modes by combining different fiber core structures of the multi-beam-mode energy transmission fiber by means of the laser shaping and coupling device.
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公开(公告)号：US20240329314A1
公开(公告)日：2024-10-03
申请号：US18740836
申请日：2024-06-12
Inventor： Jixin SHI , Yang LIU , Liang HE , Dapeng YAN
IPC: G02B6/26
CPC classification number: G02B6/268
Abstract: Disclosed is a mode scrambler. The mode scrambler includes a fastening connection component, a first translation plate and a second translation plate. The fastening connection component is provided with an L-shaped groove for placing an optical fiber. The first translation plate and the second translation plate are both connected to the fastening connection component, the first translation plate is configured to reciprocate relatively to the fastening connection component along a radial direction of the optical fiber, and the second translation plate is configured to reciprocate relatively to the fastening connection component in a vertical direction. The second translation plate is abutted against a top of the optical fiber and is in close contact with a part of the sinusoidal surface of the first translation plate. The optical fiber is enclosed among the fastening connection component, the first translation plate and the second translation plate.
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5.发明公开公开(公告)号：US20240322513A1
公开(公告)日：2024-09-26
申请号：US18735718
申请日：2024-06-06
Inventor： Ouyang REN , Feng CHANG , Weiwen SHUAI , Peng XU , Dapeng YAN
IPC: H01S3/00 , H01S3/0941 , H01S5/042 , H01S5/062
CPC classification number: H01S3/0057 , H01S3/0941 , H01S5/0428 , H01S5/06216
Abstract: Disclosed are a narrow pulse width laser, a method for emitting narrow pulse width laser, a device, and a storage medium. The narrow pulse width laser includes: a pulse signal controller and a pulse laser emitter. An output end of the pulse signal controller is connected to an input end of the pulse laser emitter. The pulse signal controller is configured to obtain a first pulse signal and a second pulse signal, the first pulse signal is identical to the second pulse signal, the first pulse signal is controlled to delay for obtaining a delay signal, there is a target phase difference between the delay signal and the second pulse signal, the delay signal is superimposed on the second pulse signal to obtain a target pulse signal.
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