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81. 发明授权

US4324475A Laser component 失效
标题翻译：激光组件
公开(公告)号：US4324475A
公开(公告)日：1982-04-13
申请号：US145496
申请日：1980-04-29
申请人： Anthony F. Purdie
发明人： Anthony F. Purdie
IPC分类号： G02F1/21 , H01S3/106 , G01B9/02
CPC分类号： H01S3/1062 , G02F1/21 , G02F2001/213
摘要： An etalon for use in lasers, particularly CW dye lasers, comprises a pair of plates, 10,11 respectively mounted at the ends of a tube 12 with the distal faces 10a, 11a of the plates parallel and the chamber 13 formed within the tube 12 between plates 10,11 is substantially completely filled with a fluid 20 whose refractive index matches that of the plates 10,11 and means 25 are provided for causing extension and contraction of the axial spacing of the plates 10,11. In one embodiment the tube 12 is made of piezoelectric material and the means 25 provides an electrical drive signal to the piezoelectric material. In another embodiment the tube 12 has piezoelectric portions and other portions made of a rigid material. In a further embodiment the tube has portions made of a rigid material which are separated by an elastomer 39 and the means 25 includes a pump 26 which is in fluid communication with the chamber 13. The plates 10 and 11 may be mounted directly on the ends of the tube 12 but more conveniently are mounted on adjustable holders 16, 16a, 17 and 17a.
摘要翻译：用于激光器，特别是CW染料激光器的标准具包括一对板，10,11分别安装在管12的端部，其中板的远端面10a，11a平行，并且腔室13形成在管12内在板10,11之间基本上完全填充有折射率与板10,11的折射率相匹配的流体20，并且提供装置25用于使板10,11的轴向间距延伸和收缩。在一个实施例中，管12由压电材料制成，并且装置25向压电材料提供电驱动信号。在另一个实施例中，管12具有压电部分和由刚性材料制成的其它部分。在另一实施例中，管具有由刚性材料制成的部分，其由弹性体39分离，并且装置25包括与腔室13流体连通的泵26.板10和11可以直接安装在端部但更方便地安装在可调节保持器16,16a，17和17a上。

82. 发明授权

US3934210A Tuning apparatus for an optical oscillator 失效
标题翻译：光学振荡器调谐装置
公开(公告)号：US3934210A
公开(公告)日：1976-01-20
申请号：US474305
申请日：1974-05-30
申请人： J. Michael Yarborough , James L. Hobart
发明人： J. Michael Yarborough , James L. Hobart
IPC分类号： H01S3/02 , H01S3/106 , H01S3/10
CPC分类号： H01S3/1062 , H01S3/022
摘要： One or more birefringent plates are placed within the optical cavity of an optical oscillator such as a dye laser. Each of the plates is positioned at an angle, such as Brewster's angle with respect to the light reflected within the optical cavity of the optical resonator. The output wavelength from the optical resonator is tuned, or its bandwidth narrowed, by rotating the birefringent plates while maintaining the plates at the same angle.
摘要翻译：将一个或多个双折射板放置在诸如染料激光器的光学振荡器的光学腔内。每个板相对于在光学谐振器的光腔内反射的光以一定的角度定位，例如布鲁斯特角。通过旋转双折射板，同时将板保持在相同的角度，调谐来自光学谐振器的输出波长或其带宽变窄。

83. 发明授权

US3866139A Apparatus for laser frequency selection 失效
标题翻译：激光频率选择装置
公开(公告)号：US3866139A
公开(公告)日：1975-02-11
申请号：US40562073
申请日：1973-10-11
申请人： US AIR FORCE
发明人： CURRIE GEORGE D
IPC分类号： H01S3/106 , H01S3/00 , G02F1/26
CPC分类号： H01S3/1062
摘要： A laser system having a lasing medium positioned between a pair of mirrors defining a resonant cavity. An etalon is positioned within the cavity with its mirrors perpendicular to the axis of the resonant cavity and use is made of the frequency selectivity of the transmission characteristics of the etalon. The output of the laser is linearly polarized and a quarter wave plate is positioned on each side of the etalon within the cavity. The reflected light from the etalon having passed through the one quarter wave plate twice is linearly polarized in a 90* direction to the transmission of the linear polarizer. The light transmitted by the etalon passes through two quarter wave plates twice and is polarized with the proper polarization for transmission through the linear polarizer. A piezoelectric transducer is used to vary the spacing of the etalon mirrors to make the laser frequency selective.
摘要翻译：激光系统具有位于一对镜子之间的激光介质，所述反射镜限定谐振腔。标准具定位在腔内，其反射镜垂直于谐振腔的轴线，并且使用标准具的传输特性的频率选择性。激光器的输出是线性偏振的，四分之一波片位于腔内的标准具的每侧。已经通过四分之一波片的标准具的反射光在90度方向上线性偏振到线偏振器的透射。由标准具透过的光经过两个四分之一波片两次，并以适当的极化极化，通过线偏振器透射。使用压电换能器来改变标准具反射镜的间距以使激光频率选择性。

84. 发明授权

US3422370A Variable frequency laser 失效
标题翻译：可变频率激光
公开(公告)号：US3422370A
公开(公告)日：1969-01-14
申请号：US3422370D
申请日：1965-07-19
申请人： SPERRY RAND CORP
发明人： COLLINS STUART A JR
IPC分类号： H01S3/106 , H01S3/107 , H01S3/10
CPC分类号： H01S3/1062 , H01S3/107

85. 发明授权

US12080987B2 Methods and apparatus for laser mode transformation 有权
公开(公告)号：US12080987B2
公开(公告)日：2024-09-03
申请号：US17277153
申请日：2019-09-26
申请人： IMPERIAL COLLEGE INNOVATIONS LIMITED
发明人： Michael John Damzen , William Richard Kerridge-Johns
IPC分类号： H01S3/106 , H01S3/083 , H01S3/105
CPC分类号： H01S3/1062 , H01S3/083 , H01S3/105 , H01S2301/203
摘要： A method for generating a spatially transformed optical output from a laser system, the method comprising: disposing a laser gain medium within a laser cavity structure; arranging an interferometric device to complete the laser cavity structure, wherein the interferometric device receives an input beam from laser oscillation in the laser cavity structure, splits the input beam into two sub-beams, and recombines the two sub-beams to provide an optical feedback beam to sustain laser oscillation; configuring the optical components that comprise the interferometric device to provide relative misalignment of the two sub-beams that are produced internally to the interferometric device; using at least a first output port of the interferometric device to provide an output beam of the laser system that due to the misalignment is a spatial transformation of the internal mode structure of the laser; and using at least a second output port of the interferometric device to provide the optical feedback beam to the laser cavity structure that sustains laser oscillation with a spatial structure that substantially preserves the internal mode structure of the laser. An apparatus which implements such a method is also provided.

86. 发明授权

US12013572B2 Apparatus and methods for high-speed and long depth range imaging using optical coherence tomography 有权
公开(公告)号：US12013572B2
公开(公告)日：2024-06-18
申请号：US17708143
申请日：2022-03-30
申请人： The General Hospital Corporation
发明人： Benjamin Vakoc , Meena Siddiqui
IPC分类号： H03M1/12 , A61B5/00 , G01B9/02091 , G01K11/32 , G02B6/293 , H01S3/067 , H03M1/20 , H01S3/08 , H01S3/106
CPC分类号： G02B6/2932 , A61B5/0066 , G01B9/02091 , G01K11/32 , H01S3/0675 , H03M1/20 , A61B5/6826 , H01S3/06791 , H01S3/08086 , H01S3/106 , H01S3/1062
摘要： Exemplary apparatus can be provided which can include a laser arrangement that is configured to provide a laser radiation, and including an optical cavity. The optical cavity can include a dispersive optical waveguide first arrangement having first and second sides, and which is configured to (i) receive at least one first electro-magnetic radiation at the first side so as to provide at least one second electro-magnetic radiation, and (ii) to receive at least one third electro-magnetic radiation at the second side so as to provide at least one fourth electro-magnetic radiation. The first and second sides are different from one another, and the second and third radiations are related to one another. The optical cavity can also include an active optical modulator second arrangement which can be configured to receive and modulate the fourth radiation so as to provide the first electro-magnetic radiation to the first arrangement. The laser radiation can be associated with at least one of the first, second, third or fourth radiations.

87. 发明授权

US12007606B2 Ring resonator and manufacturing method thereof 有权
公开(公告)号：US12007606B2
公开(公告)日：2024-06-11
申请号：US17172416
申请日：2021-02-10
申请人： Korea Advanced Institute of Science and Technology
发明人： Kyoungsik Yu , Gyeongho Son , Mohamad Syahadi
IPC分类号： G02B6/293 , G02B6/10 , G02B6/245 , G02B6/255 , H01P7/08 , H01S3/106
CPC分类号： G02B6/2934 , G02B6/10 , G02B6/245 , G02B6/255 , H01P7/082 , H01S3/1062
摘要： A ring resonator includes a core. Both ends of the core in a lengthwise direction are connected to have a circular shape. The ring resonator further includes a cladding surrounding the core, a jacket surrounding the cladding and a sleeve surrounding a portion of the jacket. A portion of the core is exposed from the cladding and the jacket.

88. 发明公开

US20240055829A1 Semiconductor Laser and Design Method Therefor 审中-公开
公开(公告)号：US20240055829A1
公开(公告)日：2024-02-15
申请号：US18259145
申请日：2021-01-18
申请人： Nippon Telegraph and Telephone Corporation
发明人： Takuma Tsurugaya , Shinji Matsuo
IPC分类号： H01S5/14 , H01S3/106 , H01S5/0687
CPC分类号： H01S5/141 , H01S3/1062 , H01S5/0687
摘要： A semiconductor laser includes a first optical waveguide including a first reflection unit and a second reflection unit, and a confinement portion. The first reflection unit and the second reflection unit are waveguide type reflection units each having a structure in which the refractive index is periodically modulated. The first reflection unit, the confinement portion, and the second reflection unit constitute a Fabry-Perot type optical resonator. The semiconductor laser also includes a second optical waveguide disposed along a first optical waveguide to extend from the confinement portion to the second reflection unit side. The second optical waveguide serves as an extraction optical waveguide. Further, a third reflection unit formed continuously with the second optical waveguide is provided at a location corresponding to the first reflection unit.

89. 发明授权

US11799263B2 Electro-optic modulator 有权
公开(公告)号：US11799263B2
公开(公告)日：2023-10-24
申请号：US16624574
申请日：2018-06-13
申请人： M SQUARED LASERS LIMITED
发明人： Gareth Thomas Maker , Graeme Peter Alexander Malcolm , Simon Munro
IPC分类号： H01S3/108 , H01S3/08022 , H01S3/08036 , H01S3/081 , H01S3/106 , H01S3/107 , H01S3/16 , H01S3/0941
CPC分类号： H01S3/108 , H01S3/0816 , H01S3/08027 , H01S3/08036 , H01S3/107 , H01S3/1062 , H01S3/1625 , H01S3/1636 , H01S3/0941
摘要： An electro-optic modulator (EOM) for altering an optical path length of an optical field is described. The EOM comprises first and second Brewster-angle cut nonlinear crystals having a first and second optical axis. The optical axes are orientated relative to each other such that when an optical field propagates through the nonlinear crystals it experiences no overall deviation. The nonlinear crystals are also arranged to be opposite handed relative to the optical field. The EOM has the advantage that its optical losses are lower when compared with those EOMs known in the art. In addition, the EOM can be inserted into, or removed from, an optical system without any deviation being imparted onto the optical field. This reduces the levels of skill and effort required on the part of an operator. The described method and apparatus for mounting the nonlinear crystals also suppresses problematic piezo-electric resonances within the nonlinear crystals.

90. 发明公开

US20230163556A1 ELECTRONICALLY-CONTROLLED OPTICAL FEEDBACK METHODS FOR LASER LINEWIDTH REDUCTION 审中-公开
公开(公告)号：US20230163556A1
公开(公告)日：2023-05-25
申请号：US17969646
申请日：2022-10-19
申请人： The University of British Columbia
发明人： Hossam Ahmed Sabri SHOMAN , Sudip SHEKHAR , Lukas CHROSTOWSKI , Omid ESMAEELI
IPC分类号： H01S3/13 , H01S3/106 , H01S3/086
CPC分类号： H01S3/1305 , H01S3/1062 , H01S3/086
摘要： An integrated optical linewidth reduction system based on optical feedback and a low-speed electronic control loop to control the optical feedback. Light is tapped and reflected back to the laser with an amplitude, phase or both amplitude and phase adjustment such that the linewidth of the laser is lower than the free-running laser linewidth. The amplitude of the feedback signal may be controlled using an optical attenuator. The phase of the feedback signal may be controlled using a phase shifter. The amplitude of the optical feedback may be monitored by means of a filter and a photodetector, or just a photodetector. The amplitude and/or phase of the optical feedback is monitored by means of a frequency/phase noise discriminator. The phase shifter can be an endless phase shifter

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