公开(公告)号：US20180307117A1

公开(公告)日：2018-10-25

申请号：US15945598

申请日：2018-04-04

申请人： Coherent Scotland Limited

发明人： Ian MACGILLIVRAY

IPC分类号： G02F1/37 ,  G02F1/355

CPC分类号： G02F1/37 ,  G02F1/3544 ,  G02F1/3551 ,  G02F2001/3509 ,  G02F2001/3542

摘要： An optically nonlinear crystal is arranged for frequency-doubling an input pulse. The crystal has parallel facets each coated with a reflective coating. The crystal is arranged with respect to the input pulse such that the input pulse makes a plurality of forward and reverse passes between the coatings. A frequency-doubled pulse is generated on the forward passes. The input pulse and the frequency-doubled pulse propagate with different group velocities in the crystal such that temporal separation the pulses occurs. The crystal and reflective coatings are configured such that the temporal separation does not exceed a predetermined value.

公开(公告)号：US09904081B2

公开(公告)日：2018-02-27

申请号：US15187221

申请日：2016-06-20

申请人： Raytheon Company

发明人： Gerald P. Uyeno ,  Sean D. Keller

IPC分类号： H01J3/14 ,  G02F1/13 ,  H01S3/00 ,  H01S3/23 ,  G02F1/35 ,  G01S17/02

CPC分类号： G02F1/1326 ,  G01S7/4814 ,  G01S7/4817 ,  G01S17/026 ,  G01S17/42 ,  G01S17/89 ,  G02F1/3501 ,  G02F2001/3509 ,  H01S3/0071 ,  H01S3/0092 ,  H01S3/2308

摘要： A steerable laser transmitter and situational awareness sensor uses a liquid crystal waveguide (LCWG) to steer a spot-beam onto a conical mirror, which in turn redirects the spot-beam to scan a FOV. The spot-beam passes through one or more annular sections of non-linearly material (NLM) formed along the axis and around the conical mirror. Each NLM section converts the wavelength of the spot-beam to a different wavelength while preserving the steering of the spot-beam. The LCWG may shape or move the spot-beam along the axis of the conic mirror to sequentially, time or time and spatially multiplex the spot-beam between the original and different wavelengths. This provides multispectral capability from a single laser source. The transmitter also supports steering the spot-beam at a wavelength at which the LCWG cannot steer directly.

公开(公告)号：US20180017841A1

公开(公告)日：2018-01-18

申请号：US15716159

申请日：2017-09-26

申请人： Lumentum Operations LLC

发明人： Martin H. MUENDEL ,  James J. MOREHEAD

IPC分类号： G02F1/37 ,  G02F1/355 ,  H01S3/00 ,  G02F1/35

CPC分类号： G02F1/37 ,  G02F1/3501 ,  G02F1/353 ,  G02F1/3551 ,  G02F2001/3503 ,  G02F2001/3505 ,  G02F2001/3507 ,  G02F2001/3509 ,  G02F2001/354 ,  G02F2201/20 ,  G02F2203/055 ,  H01S3/0092

摘要： A second harmonic generator may include a combiner to combine a fundamental optical beam with a residual fundamental optical beam. The second harmonic generator may include a second harmonic crystal, coupled to the combiner, to generate a second harmonic optical beam from the fundamental optical beam and the residual fundamental optical beam. Upon generation of the second harmonic optical beam, the residual fundamental optical beam may exit the second harmonic crystal.

公开(公告)号：US09664855B2

公开(公告)日：2017-05-30

申请号：US15262937

申请日：2016-09-12

申请人： Skorpios Technologies, Inc.

发明人： Majid Sodagar ,  Murtaza Askari ,  Guoliang Li

IPC分类号： G02B6/12 ,  G02B6/14 ,  G02B6/122

CPC分类号： G02B6/14 ,  G02B5/20 ,  G02B6/122 ,  G02B6/1228 ,  G02B6/262 ,  G02B2006/12035 ,  G02B2006/12097 ,  G02B2006/12109 ,  G02F1/3501 ,  G02F1/365 ,  G02F2001/3509

摘要： An optical filter for attenuating higher-order modes in an optical waveguide includes a shoulder slab formed of a first material having a first index of refraction and disposed on a second material having a second index of refraction, the first index of refraction being higher than the second index of refraction. The shoulder slab defines a near end having a first width, an intermediate section, adjacent to the first end section, and a far end section, adjacent to the intermediate section and opposite the first end section along a direction of beam propagation. The optical filter also includes a waveguide ridge, formed of the first material and disposed atop the shoulder slab, that traverses the shoulder slab, and is configured to guide light of a fundamental mode along the direction of beam propagation from the near end section to the far end section.

公开(公告)号：US20170090118A1

公开(公告)日：2017-03-30

申请号：US15262937

申请日：2016-09-12

申请人： Skorpios Technologies, Inc.

发明人： Majid Sodagar ,  Murtaza Askari ,  Guoliang Li

IPC分类号： G02B6/14 ,  G02B6/122

CPC分类号： G02B6/14 ,  G02B5/20 ,  G02B6/122 ,  G02B6/1228 ,  G02B6/262 ,  G02B2006/12035 ,  G02B2006/12097 ,  G02B2006/12109 ,  G02F1/3501 ,  G02F1/365 ,  G02F2001/3509

摘要： An optical filter for attenuating higher-order modes in an optical waveguide includes a shoulder slab formed of a first material having a first index of refraction and disposed on a second material having a second index of refraction, the first index of refraction being higher than the second index of refraction. The shoulder slab defines a near end having a first width, an intermediate section, adjacent to the first end section, and a far end section, adjacent to the intermediate section and opposite the first end section along a direction of beam propagation. The optical filter also includes a waveguide ridge, formed of the first material and disposed atop the shoulder slab, that traverses the shoulder slab, and is configured to guide light of a fundamental mode along the direction of beam propagation from the near end section to the far end section.

公开(公告)号：US09465163B2

公开(公告)日：2016-10-11

申请号：US14642429

申请日：2015-03-09

申请人： Skorpios Technologies, Inc.

发明人： Nikhil Kumar ,  Guoliang Li

IPC分类号： G02B6/12 ,  G02B6/122 ,  G02B6/14 ,  G02F1/35 ,  G02B5/20 ,  G02F1/365

CPC分类号： G02B6/122 ,  G02B5/20 ,  G02B6/14 ,  G02B2006/12109 ,  G02F1/3501 ,  G02F1/365 ,  G02F2001/3509

摘要： A high-order-mode (HOM) filter for thick silicon waveguides has a shoulder slab, a waveguide ridge, a first filter ridge, and a second filter ridge. The first filter ridge and the second filter ridge help attenuate higher-order modes from the waveguide ridge while the waveguide ridge guides a fundamental mode.

摘要翻译： 用于厚硅波导的高阶模（HOM）滤波器具有肩板，波导脊，第一滤光片和第二滤光片。 第一滤波器脊和第二滤波器脊有助于衰减来自波导脊的高阶模，而波导脊引导基模。

公开(公告)号：US20150253471A1

公开(公告)日：2015-09-10

申请号：US14429166

申请日：2013-06-18

申请人： NEC CORPORATION

发明人： Shigeki Takahashi

IPC分类号： G02B5/20 ,  G02F1/35 ,  G02F1/365 ,  G02B6/122

CPC分类号： G02B5/20 ,  G02B6/122 ,  G02B6/14 ,  G02B2006/12097 ,  G02B2006/12109 ,  G02B2006/12126 ,  G02F1/3501 ,  G02F1/365 ,  G02F2001/3509

摘要： A rib waveguide type high-order mode filter includes a plate-like slab region 1; a projection portion 2 formed in a stripe along a waveguiding direction of light on the slab region 1; and a mesa region 4 having a bottom surface positioned at the same level as that of the bottom surface of the slab region 1 and a top surface positioned at a higher level than that of the top surface of the slab region 1, on at least one side of the slab region 1, wherein the projection portion 2, the slab region 1, and the mesa region 4 are made of the same material; and the mesa region 4 includes a doped area 4a in which an optical-absorption function is added by impurity doping into the material.

摘要翻译： 肋波导型高阶模式滤波器包括板状板状区域1; 沿着板坯区域1上的光的波导方向沿条纹形成的突起部2; 以及台面区域4，其底面位于与板坯区域1的底面相同的水平面上，顶面位于与板坯区域1的顶面高的位置上，至少一个 其中突出部分2，板坯区域1和台面区域4由相同的材料制成; 并且台面区域4包括掺杂区域4a，其中通过杂质掺杂添加到材料中的光吸收函数。

公开(公告)号：US08542435B2

公开(公告)日：2013-09-24

申请号：US13426522

申请日：2012-03-21

申请人： Myriam Raybaut ,  Bertrand Hardy ,  Antoine Godard ,  Michel Lefebvre

发明人： Myriam Raybaut ,  Bertrand Hardy ,  Antoine Godard ,  Michel Lefebvre

IPC分类号： G02F1/39 ,  G02F1/35

CPC分类号： G02F1/3544 ,  G02F1/39 ,  G02F2001/3509 ,  G02F2001/3542 ,  G02F2001/3548 ,  G02F2203/15

摘要： Nested-cavity optical parametric oscillator for fast frequency tuning including a source of pump radiation (fp), a non linear crystal situated within two resonant cavities for the signal and complementary radiations of respective optical lengths ls and lc. A doubly resonant resonator for a single pair of longitudinal signal and complementary modes is formed having a crystal of prismatic shape, the crystal (7) being moveable within the plane xz along a direction forming a non zero angle β with respect to the direction x. The value of β is fixed so that the movement of the crystal is accompanied by a change in the respective optical lengths ls and lc of the two resonant cavities in a ratio such that the double resonance condition between the longitudinal modes of each cavity is maintained.

摘要翻译： 用于快速调谐的嵌套腔光学参量振荡器，包括泵浦辐射源（fp），位于两个谐振腔内的非线性晶体，用于相应光学长度ls和lc的信号和互补辐射。 形成具有棱柱形状晶体的单对纵向信号和互补模式的双谐振谐振器，所述晶体（7）可沿着相对于方向x形成非零角度β的方向在平面xz内移动。 β的值是固定的，使得晶体的移动伴随着两个谐振腔的各个光学长度ls和lc的变化，使得保持每个腔的纵向模式之间的双重共振条件。

公开(公告)号：US07782469B2

公开(公告)日：2010-08-24

申请号：US11946980

申请日：2007-11-29

申请人： Jong Bae Kim

发明人： Jong Bae Kim

IPC分类号： G01B9/02

CPC分类号： G02F1/37 ,  G02F2001/3509

摘要： Provided is a method for determining the optimal resonant length, among a large number of local resonant lengths which satisfy a resonant condition, that maximizes wave intensity in a resonant structure. In the second harmonic generation or the cascaded difference frequency generation device using the resonant structure by which the second harmonic wave of a pump wave resonates, the optimal resonant length is determined so that the intensity of an optical wave is maximized. The intensity distribution of the optical wave is defined, according to the resonant feedback condition or the no-resonant feedback condition, as a function of the resonant lengths to determine the optimal resonant length.

摘要翻译： 提供了一种确定最大谐振长度的方法，该谐振长度在满足谐振条件的大量局部谐振长度中使谐振结构中的波强最大化。 在使用谐振结构的二次谐波发生装置或者使用泵浦波的二次谐波共振的谐振结构的级联差分频率产生装置中，确定最佳谐振长度，使得光波的强度最大化。 根据谐振反馈条件或非谐振反馈条件，定义光波的强度分布作为谐振长度的函数，以确定最佳谐振长度。

公开(公告)号：US20090168147A1

公开(公告)日：2009-07-02

申请号：US12322011

申请日：2009-01-28

申请人： Robert Joseph Crowley

发明人： Robert Joseph Crowley

IPC分类号： G02F1/37

CPC分类号： B82Y20/00 ,  B82Y30/00 ,  G02F1/3501 ,  G02F1/353 ,  G02F1/355 ,  G02F1/3556 ,  G02F1/37 ,  G02F2001/3509 ,  G02F2202/36 ,  G02F2203/15 ,  G06K19/0717 ,  G06K19/07345 ,  G08B13/2414 ,  G08B13/2417 ,  G08B13/244 ,  G08B13/2442 ,  H01Q1/248 ,  H01Q3/2676 ,  H01Q3/46 ,  H01Q9/16 ,  H01Q9/44 ,  H01Q19/28 ,  Y10S977/724 ,  Y10S977/742 ,  Y10S977/95 ,  Y10T428/2935

摘要： An optical antenna collects, modifies and emits energy at light wavelengths. Linear conductors sized to correspond to the light wavelengths are used. Nonlinear junctions of small dimension are used to rectify an alternating waveform induced upon the conductors by the lightwave electromagnetic energy. The optical antenna and junctions are effective to produce harmonic energy at light wavelengths. The linear conductors may be comprised of carbon nanotubes that are attached to a substrate material, which may then be connected to an electrical port.