公开(公告)号：US4665529A

公开(公告)日：1987-05-12

申请号：US864928

申请日：1986-05-19

Applicant: Thomas M. Baer ,  Mark S. Keirstead

Inventor： Thomas M. Baer ,  Mark S. Keirstead

IPC: H01S3/094 ,  G02B6/26 ,  G02B6/42 ,  H01S3/02 ,  H01S3/0941 ,  H01S3/16 ,  H01S5/00 ,  H01S3/08

CPC classification number: H01S3/025 ,  G02B6/26 ,  G02B6/4204 ,  G02B6/424 ,  G02B6/4244 ,  H01S3/09415 ,  G02B6/4226 ,  H01S3/061 ,  H01S3/0621 ,  H01S3/086 ,  H01S3/094053 ,  H01S3/109

Abstract: A compact laser head for a solid state laser has a miniaturized laser rod and output coupling mirror which form a miniaturized laser cavity. A miniaturized frequency doubler crystal placed in the cavity provides frequency doubled output. The laser head is connected by an optical fiber to a separate power suply which contains a laser diode pumping source. A quick disconnect connector enables the fiber optic to be easily connected to the laser head. Pumping radiation is transmitted through the optical fiber to longitudinally end pump the laser rod using fiber coupling imagery. The fiber is aligned with the rod by the connector and the pumping radiation is imaged into the rod by a focussing sphere. The pumping volume is matched to the lasing volume which is determined by the cavity geometry. The quick disconnect laser head allows interchange of different heads with different output characteristics while using a single power supply.

Abstract translation: 用于固态激光器的紧凑型激光头具有小型激光棒和输出耦合镜，其形成小型激光腔。 放置在腔内的小型倍频晶体提供倍频输出。 激光头通过光纤连接到包含激光二极管泵浦源的独立功率。 快速断开连接器使光纤能够轻松连接到激光头。 泵浦辐射通过光纤传输到使用光纤耦合图像纵向泵浦激光棒。 纤维通过连接器与棒对准，并且泵送辐射通过聚焦球体成像到棒中。 泵浦体积与由腔体几何形状确定的激光体积匹配。 快速断开激光头允许在使用单个电源时交换具有不同输出特性的不同磁头。

公开(公告)号：US3235813A

公开(公告)日：1966-02-15

申请号：US29035763

申请日：1963-06-25

Applicant: BELL TELEPHONE LABOR INC

Inventor： KOGELNIK HERWIG W ,  AMNON YARIV

IPC: H01S3/23

CPC classification number: H01S3/2308 ,  H01S3/005 ,  H01S3/0621

公开(公告)号：US11784037B2

公开(公告)日：2023-10-10

申请号：US18161282

申请日：2023-01-30

Applicant: Hamamatsu Photonics K.K. ,  ENERGETIQ TECHNOLOGY, INC.

Inventor： Matthew Partlow ,  Donald Smith ,  Matthew Besen ,  Akinori Asai

IPC: H01J65/00 ,  H01J61/54 ,  H01S3/1115 ,  H01S3/094 ,  H01S3/091 ,  H01S3/16 ,  H01S3/06 ,  H01J61/16 ,  H01J65/04 ,  H01S3/13

CPC classification number: H01J61/54 ,  H01J61/16 ,  H01J65/00 ,  H01J65/04 ,  H01S3/0602 ,  H01S3/0621 ,  H01S3/0912 ,  H01S3/094038 ,  H01S3/1115 ,  H01S3/1623 ,  H01S3/1643 ,  H01S3/1305

Abstract: An electrodeless laser-driven light source includes a laser source that generates CW sustaining light. A pump laser generates pump light. A Q-switched laser crystal is positioned to receive the pump light and generates pulsed laser light in response to the generated pump light that propagates to a breakdown region in a gas filled bulb comprising an ionizing gas. A detector detects plasma light generated by a CW plasma located at least partly in a CW plasma region in the gas filled bulb comprising the ionizing gas and generates a detection signal. A controller generates control signals that control the pump light to the Q-switched laser crystal so as to extinguish the pulsed laser light within a time delay after the detection signal exceeds a threshold level.

公开(公告)号：US20230238766A1

公开(公告)日：2023-07-27

申请号：US18155892

申请日：2023-01-18

Applicant: SciAps, Inc.

Inventor： David Welford ,  David R. Day ,  Richard P. Mitrano

IPC: H01S3/1123 ,  H01S3/0941 ,  H01S3/16 ,  H01S3/106 ,  H01S3/00 ,  H01S3/06 ,  G01N21/27 ,  G01N21/25

CPC classification number: H01S3/1123 ,  G01N21/27 ,  G01N21/255 ,  H01S3/0014 ,  H01S3/061 ,  H01S3/106 ,  H01S3/0621 ,  H01S3/0941 ,  H01S3/1611 ,  H01S3/1643 ,  G01N2201/06113

Abstract: A handheld LIBS device and method includes a laser assembly producing two pulsed single spatial mode output beams and a focusing optic which combines the two pulsed single spatial mode output beams at a focal point at a sample. The laser assembly includes a laser assembly housing with an output coupler window for the two pulsed single spatial mode output beams, a gain medium in the laser assembly housing between the output coupler window and an adjustable prism mount in the laser assembly housing holding a prism configured to establish two light paths through the gain medium, a source in the laser assembly housing providing pump energy to the gain medium, and a Q-switch positioned between the prism and the gain medium.

公开(公告)号：US20230236494A1

公开(公告)日：2023-07-27

申请号：US18101483

申请日：2023-01-25

Applicant: University of Central Florida Research Foundation, Inc.

Inventor： Ivan Divliansky ,  Leonid Glebov ,  Lam Mach ,  Oussama Mhibik

IPC: G03F1/26 ,  H01S3/06 ,  H04B10/572 ,  G01J9/02

CPC classification number: G03F1/26 ,  H01S3/0621 ,  H04B10/572 ,  G01J9/02 ,  G03H1/0248

Abstract: A phase transformation device may include a solid photosensitive material having a planar input facet and one or more reflective holographic phase masks (RHPMs) within a volume of the solid photosensitive material, where a particular one of the one or more RHPMs is formed as a periodic refractive index variation of the photosensitive material along a particular grating vector and further with a particular non-planar lateral phase profile, where at least one of a period of the refractive index variation along the grating vector or an orientation of the grating vector for each of the one or more RHPMs are arranged to reflect via Bragg diffraction light incident on the input facet that satisfies a Bragg condition, and where a phase distribution of the reflected light from a particular one of the one or more RHPMs is modified by the associated non-planar lateral phase profile.

公开(公告)号：US10079466B2

公开(公告)日：2018-09-18

申请号：US15111938

申请日：2015-01-20

Applicant: B.G. NEGEV TECHNOLOGIES AND APPLICATIONS LTD., AT BEN GURION UNIVERSITY

Inventor： Amiel A. Ishaaya ,  Boris Rosenstein Levin

IPC: H01S3/09 ,  H01S3/094 ,  H01S3/067 ,  H01S3/11 ,  H01S3/16 ,  H01S3/00 ,  H01S3/06

CPC classification number: H01S3/094015 ,  H01S3/005 ,  H01S3/0621 ,  H01S3/06708 ,  H01S3/06741 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/094049 ,  H01S3/11 ,  H01S3/1618

Abstract: The invention is optical configurations for constructing laser oscillators or laser amplifiers that comprise an extremely short fiber (typically tens of cm long or below, e.g. 5 cm to 30 cm). In order to overcome the absorption limitation due to the very short length of the fiber, the present invention employs a multi pump-pass scheme for pump light confinement. This scheme is based on the small angular overlap between the lasing and pump beams. The multi pump-pass method of the invention leads to efficient fiber laser oscillators and amplifiers having pulse duration of a few ns, with high average and peak power output that is comparable to the state-of-the-art solid state lasers.

公开(公告)号：US20180246339A1

公开(公告)日：2018-08-30

申请号：US15755276

申请日：2016-09-12

Applicant: UNIVERSITY OF ROCHESTER

Inventor： John R. Marciante

IPC: G02B27/48 ,  H01S3/16 ,  H01S3/08 ,  H01S3/067 ,  H01S3/06 ,  H01S3/23 ,  H01S3/094 ,  H01S3/0941

CPC classification number: G02B27/48 ,  G02B27/22 ,  G03B21/2013 ,  G03B21/2033 ,  H01S3/0407 ,  H01S3/042 ,  H01S3/0602 ,  H01S3/0621 ,  H01S3/0623 ,  H01S3/06737 ,  H01S3/0675 ,  H01S3/08009 ,  H01S3/08027 ,  H01S3/08063 ,  H01S3/08086 ,  H01S3/094007 ,  H01S3/0941 ,  H01S3/1605 ,  H01S3/1655 ,  H01S3/2391 ,  H01S2301/04

Abstract: Methods and apparatus for producing high power lasers with reduced speckle are provided. Fiber and solid-state lasers comprising terbium-doped lasing material are provided. Embodiments are described for increasing signal reflection bandwidth, reducing coupling and coherency of spatial modes, and equalizing gain of terbium-doped lasers for use in laser display systems. Spectral selectors are described for generating separate wavelengths within a range of interest for use in 3D laser display systems.

公开(公告)号：US20180069368A1

公开(公告)日：2018-03-08

申请号：US15695594

申请日：2017-09-05

Applicant: INTER-UNIVERSITY RESEARCH INSTITUTE CORP. NATIONAL INSTITUTES OF NATURAL SCIENCES

Inventor： Takunori TAIRA ,  Vincent YAHIA

IPC: H01S3/08 ,  H01S3/06 ,  H01S5/00

CPC classification number: H01S3/08018 ,  H01S3/005 ,  H01S3/0071 ,  H01S3/0602 ,  H01S3/0612 ,  H01S3/0621 ,  H01S3/0623 ,  H01S3/0627 ,  H01S3/0804 ,  H01S3/08059 ,  H01S3/094053 ,  H01S3/09415 ,  H01S3/10007 ,  H01S3/113 ,  H01S3/2308 ,  H01S3/2316 ,  H01S3/2333 ,  H01S5/005 ,  H01S2301/20

Abstract: Both of multi-mode laser beam 8A and excitation beam 34A for amplification are imputed to an amplification gain medium 62 in a relationship in which their optical axes match each other and an effective beam diameter of the excitation beam for amplification is smaller than an effective beam diameter of the multi-mode laser beam. As a result, laser beam of a part of modes progressing in a radiation range of the excitation beam 34A for amplification is selectively amplified. Laser beam 40A subjected to mode cleaning is thereby outputted.

公开(公告)号：US20170196733A1

公开(公告)日：2017-07-13

申请号：US15315099

申请日：2015-05-26

Applicant: OPTOTEK D.O.O.

Inventor： Uros ORTHABER ,  Boris VEDLIN ,  Andrej VRECKO

IPC: A61F9/008 ,  H01S5/183 ,  H01S3/11 ,  H01S3/08 ,  H01S3/0941 ,  H01S3/16

CPC classification number: A61F9/00825 ,  A61F2009/00889 ,  A61F2009/00891 ,  H01S3/0621 ,  H01S3/08054 ,  H01S3/08059 ,  H01S3/09415 ,  H01S3/11 ,  H01S3/1611 ,  H01S3/1623 ,  H01S3/1643 ,  H01S5/183

Abstract: The object of the invention relates to a field of devices for performing treatments in ophthalmology, preferably to a field of devices for selective laser trabeculoplasty and capsulotomy. The essence of a laser therapeutic device for performing treatments in ophthalmology lies in that it is based on a laser source with a short resonator based on a end pumping technique, wherein the pumping is ascertained by a VCSEL light source (vertical-cavity surface-emitting laser). Optimization of constructional and physical properties of a laser source is herewith achieved. The laser source meets all requirements for use in both above-mentioned treatments, wherein the device for capsulotomy is also suited for iridotomy and other surgeries, in which the effects of photodisruption are exploited.

公开(公告)号：US20170133815A1

公开(公告)日：2017-05-11

申请号：US15318764

申请日：2015-06-23

Applicant: Daniel Kopf

Inventor： Daniel Kopf

IPC: H01S3/06 ,  H01S3/08 ,  H01S3/16

CPC classification number: H01S3/0627 ,  H01S3/0405 ,  H01S3/042 ,  H01S3/0621 ,  H01S3/08036 ,  H01S3/08054 ,  H01S3/10061 ,  H01S3/1118 ,  H01S3/113 ,  H01S3/1611 ,  H01S3/1671 ,  H01S3/1673

Abstract: The invention relates to a microchip laser having a monolithic resonator (1) which has a birefringent laser crystal (2), wherein a laser beam (9) decoupled from the resonator, (1) which has a laser wavelength, exits the resonator (1) along a laser beam axis (12) and the length (L) of the resonator (1) is less than 150 μm based on a direction of the laser beam axis (12). The laser crystal (2) has a thickness (D) based on the direction of the laser beam axis (12) such that, in the case of a light beam (16) having the laser wavelength occurring in the direction of the laser beam axis (12) being incident on the laser crystal (2) between the ordinary and extraordinary beam (17, 19), in which the light beam (16) is divided in the laser crystal (2), a phase shift in the range of π/2 +/−π/4 occurs in a single pass through the laser crystal (2).