公开(公告)号：US20240027873A1

公开(公告)日：2024-01-25

申请号：US18255737

申请日：2021-11-15

Applicant: UAB"EKSPLA"

Inventor： Romaldas ANTANAVICIUS ,  Mikhail GRISHIN ,  Andrejus MICHAILOVAS

IPC: G02F1/39 ,  G01J3/10 ,  H01S3/23 ,  H01S3/094 ,  G02F1/35 ,  H01S3/16 ,  H01S3/1106

CPC classification number: G02F1/392 ,  G01J3/108 ,  H01S3/235 ,  H01S3/094076 ,  G02F1/3526 ,  G02F1/3503 ,  H01S3/1611 ,  H01S3/1106 ,  G02F1/3507 ,  H01S3/1673 ,  H01S3/1643 ,  G02F1/3551

Abstract: Wavelength-tunable source of pulsed laser radiation for VIS-NIR spectroscopy which consists of a pump source (1) forming bursts of picosecond pulses of high pulse repetition rate, and a synchronously pumped optical parametric oscillator (2). The pump source (1) comprises a solid-state regenerative amplifier (31) having one or two electro-optical switches (32,33) inside its resonator (44). The switches create partial transmission of the resonator for a time interval longer than a resonator roundtrip time, and eject a part of energy of a pulse circulating inside. Bursts of 5-10 ns duration are formed, which are filled with high peak power picosecond pulses. Pulse repetition rate of the order of GHz of pump pulses allows the construction of a compact optical parametric oscillator. The whole set of parameters ensures high energy efficiency, stability and an ability to provide output pulse bursts repeating at up to 10 kHz repetition rate.

公开(公告)号：US11664637B2

公开(公告)日：2023-05-30

申请号：US17395081

申请日：2021-08-05

Applicant: CYNOSURE, LLC

Inventor： Rafael Armando Sierra ,  Mirko Georgiev Mirkov

IPC: H01S3/30 ,  H01S3/094 ,  H01S3/102 ,  H01S3/1106 ,  H01S3/08 ,  H01S3/1109 ,  H01S3/16 ,  H01S3/107 ,  A61B18/00 ,  H01S3/11

CPC classification number: H01S3/094076 ,  H01S3/08054 ,  H01S3/1024 ,  H01S3/1106 ,  H01S3/1109 ,  H01S3/1611 ,  H01S3/1673 ,  A61B2018/00458 ,  F04C2270/0421 ,  H01S3/094038 ,  H01S3/107 ,  H01S3/1075 ,  H01S3/1103 ,  H01S3/1618 ,  H01S3/1623 ,  H01S3/1643

Abstract: Apparatuses and methods are disclosed for applying laser energy having desired pulse characteristics, including a sufficiently short duration and/or a sufficiently high energy for the photomechanical treatment of skin pigmentations and pigmented lesions, both naturally-occurring (e.g., birthmarks), as well as artificial (e.g., tattoos). The laser energy may be generated with an apparatus having a resonator with the capability of switching between a modelocked pulse operating mode and an amplification operating mode. The operating modes are carried out through the application of a time-dependent bias voltage, having waveforms as described herein, to an electro-optical device positioned along the optical axis of the resonator.

公开(公告)号：US12095222B2

公开(公告)日：2024-09-17

申请号：US18096185

申请日：2023-01-12

Applicant: IMAM MOHAMMAD IBN SAUD ISLAMIC UNIVERSITY

Inventor： Hajo Idriss Mohammed Idriss ,  Mohammed Khalil Mohammed Ali ,  Osamah Abdulrahman Aldaghri ,  Khalid Hassan Ibnaouf Ahmed ,  Moez Abdolfath Ibrahem Mohammed

IPC: H01S3/20 ,  H01S3/213 ,  H01S3/00 ,  H01S3/109 ,  H01S3/1106 ,  H01S3/16

CPC classification number: H01S3/213 ,  H01S3/0092 ,  H01S3/109 ,  H01S3/1121 ,  H01S3/1611 ,  H01S3/1643 ,  H01S2301/02

Abstract: The olive oil-tuned broadband conjugated polymer laser medium includes the conjugated polymer known as poly ((9,9-dihexyl-9H-fluorene-2,7-vinylene)-co-(1-methoxy-4-(2-ethylhexyloxy)-2,5-phenylenevinylene)) or “Poly(FV-co-MEHPV)” at a 90:10 mole ratio. The emission wavelength of the olive oil tuned broadband conjugated polymer laser can be reversibly tuned between 500 nm and 680 nm.

公开(公告)号：US20240266798A1

公开(公告)日：2024-08-08

申请号：US17256879

申请日：2020-12-21

Applicant: Xi'an Creation Keji CO., Ltd.

Inventor： Yi Zhang

IPC: H01S3/13 ,  H01S3/1106 ,  H04B10/2575

CPC classification number: H01S3/1305 ,  H01S3/1106 ,  H04B10/2575 ,  H04B2210/006

Abstract: An optical fiber microwave frequency transmission method based on laser frequency offset-locking includes: generating, by a master laser and a slave laser respectively, a master laser signal and a slave laser signal; transmitting, by an optical fiber link, the master laser signal and the slave laser signal to a microwave frequency receiver, and locking a frequency difference between the master laser and the slave laser to a preset microwave frequency; receiving a return laser signal returned from the microwave frequency receiver, the return laser signal including the master laser signal, the slave laser signal and a noise of the optical fiber link; generating a reference signal, and adjusting the preset microwave frequency to compensate the noise of the optical fiber link, so that a microwave frequency subsequently received by the microwave frequency receiver approaches a frequency of the reference signal.

公开(公告)号：US11616336B2

公开(公告)日：2023-03-28

申请号：US16643746

申请日：2018-08-21

Applicant: FUJIAN INSTITUTE OF RESEARCH ON THE STRUCTURE OF MATTER

Inventor： Yidong Huang ,  Yujin Chen ,  Guoliang Gong ,  Jianhua Huang ,  Yanfu Lin ,  Xinghong Gong ,  Zundu Luo

IPC: H01S3/16 ,  C30B29/34 ,  H01S3/091 ,  H01S3/109 ,  H01S3/1106 ,  H01S3/117

Abstract: A class of erbium-doped silicate crystals have a general chemical formula of (ErxYbyCezA(1-x-y-z))3RM3Si2O14, in which the range of x is 0.002 to 0.02, y is 0.005 to 0.1, and z is 0 to 0.15; A is one, two or three elements selected from Ca, Sr, or Ba; R is one or two elements selected from Nb or Ta; M is one or two elements selected from Al or Ga. Using one of such crystals as a gain medium and a diode laser at 940 nm or 980 nm as a pumping source, a 1.5 μm continuous-wave solid-state laser with high output power and high efficiency, as well as a pulse solid-state laser with high energy and narrow width can be obtained.

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：US20230288248A1

公开(公告)日：2023-09-14

申请号：US17899493

申请日：2022-08-30

Applicant: THE TRUSTEES OF THE STEVENS INSTITUTE OF TECHNOLOGY

Inventor： Yuping Huang ,  Yongmeng Sua ,  Patrick Rehain ,  Shenyu Zhu ,  Daniel Tafone ,  Jeevanandha Ramanathan

IPC: G01H9/00 ,  H01S3/1106 ,  H01S3/00 ,  H01S3/094

CPC classification number: G01H9/004 ,  H01S3/1106 ,  H01S3/0071 ,  H01S3/094076 ,  H01S3/094026

Abstract: Approaches, apparatuses and methods for single photon sensitive, non-interferometric photonics vibrometry applications based on quantum parametric mode sorting, optical gating and single photon counting are disclosed. In one embodiment, a controller module includes a photon detection unit, a pulse generator unit, a time synchronization unit, a data acquisition and processing unit and a central controller unit. In the second embodiment, a probe module with beam raster scanning ability includes an optical transceiver unit based on a bidirectional monostatic coaxial arrangement using off-the-shelf optical components and an optical beam steering device.

公开(公告)号：US20230251358A1

公开(公告)日：2023-08-10

申请号：US18295380

申请日：2023-04-04

Applicant: AQRONOS, INC.

Inventor： Shu-Wei HUANG ,  Peizhe LI

IPC: G01S7/4911 ,  G01S17/34 ,  G01S7/481 ,  G02B26/10 ,  G02B26/12 ,  G02B27/28 ,  H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/101 ,  H01S3/1106

CPC classification number: G01S7/4911 ,  G01S17/34 ,  G01S7/4814 ,  G01S7/4817 ,  G02B26/101 ,  G02B26/12 ,  G02B27/283 ,  H01S3/06791 ,  H01S3/094076 ,  H01S3/0941 ,  H01S3/101 ,  H01S3/1106 ,  G01S17/89

Abstract: A dual-comb measuring system is provided. The dual comb measuring system may include a bi-directional mode-locked femtosecond laser, a high-speed rotation stage, and a fiber coupler. The high-speed rotation stage may be coupled to a pump diode.

公开(公告)号：US11664635B2

公开(公告)日：2023-05-30

申请号：US17113041

申请日：2020-12-05

Applicant: Chongqing Institute of East China Normal University ,  ROI Optoelectronics Technology CO, LTD. ,  East China Normal University

Inventor： Heping Zeng ,  Xiuqi Wu ,  Shuang Li ,  Xuling Shen

IPC: H01S3/13 ,  H01S3/00 ,  H01S3/1106 ,  H01S3/131

CPC classification number: H01S3/0057 ,  H01S3/1106 ,  H01S3/1305 ,  H01S3/1307 ,  H01S3/1312

Abstract: Provided are a time and frequency control method and system for optical comb. The method includes: controlling an optical comb measuring system to start and to generate an optical comb; obtaining monitoring data, wherein the monitoring data comprises a working temperature, a mode-locked frequency and a light pump power, wherein the mode-locked frequency comprises a repetition frequency and a carrier envelope phase locked at the end of starting the optical comb measuring system; determining whether an offset of the mode-locked frequency exceeds a self-feedback adjustment range of a hardware adjustment circuit; and in response to any of the repetition frequency and the carrier envelope phase exceeds the self-feedback adjustment range, adjusting the working temperature and the light pump power until the mode-locked frequency returns back into the self-feedback adjustment range.

公开(公告)号：US12149042B2

公开(公告)日：2024-11-19

申请号：US17169491

申请日：2021-02-07

Applicant: CHONGQING INSTITUTE OF EAST CHINA NORMAL UNIVERSITY ,  SHANGHAI LANGYAN OPTOELECTRONICS TECHNOLOGY CO., LTD. ,  EAST CHINA NORMAL UNIVERSITY

Inventor： Heping Zeng ,  Shuang Li ,  Xuling Shen

IPC: H01S3/13 ,  H01S3/1106 ,  H01S3/1109 ,  H01S3/131 ,  H01S3/10

Abstract: A method and a system for automatically controlling mode-locking of an optical frequency comb, where the stored control parameters of the working condition in the mode-locked state is combined with the collected working feedback parameters of the optical frequency comb system to dynamically adjust and control the working power of the pump source or/and the temperature of the working environment of the pump source, which not only greatly shortens the control time for stable mode-locking and realizes a fast mode-locking control, but also reduces unnecessary power consumption, thereby further guaranteeing the energy-saving effect of power adjustment control process. The present disclosure well maintains the stable working conditions of the optical comb system, and realizes the mode-locking optimization control of an update mode for the big data, thereby effectively improving the mode-locking control process of the optical frequency comb system, and providing higher operation stability and measurement accuracy.