公开(公告)号：US20240255829A1

公开(公告)日：2024-08-01

申请号：US18427721

申请日：2024-01-30

申请人： Cornell University

发明人： Jeffrey A. Moses ,  Noah Flemens ,  Nuno Vinicius

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

CPC分类号： G02F1/354 ,  G02F1/3548 ,  G02F1/3553 ,  G02F1/3558 ,  G02F1/37 ,  H01S3/0092

摘要： A third-harmonic generation method includes frequency-quadrupling a fundamental optical beam via cascaded second-harmonic generation to yield a fourth-harmonic optical beam. The method also includes down-converting the fourth-harmonic optical beam to yield a third-harmonic optical beam. A third harmonic generator includes a monolithic optical element having nonzero quadratic electric susceptibility to (i) frequency-quadruple a fundamental optical beam via cascaded second-harmonic generation, and (ii) down-convert a fourth-harmonic optical beam to yield a third-harmonic optical beam.

公开(公告)号：US11914267B2

公开(公告)日：2024-02-27

申请号：US17307087

申请日：2021-05-04

申请人： KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY ,  POLITECNICO DI MILANO

发明人： Mohammad Khaled Shakfa ,  Marco Lamperti ,  Marco Marangoni ,  Aamir Farooq

IPC分类号： G02F1/35 ,  G02F1/355 ,  H01S5/00 ,  H01S3/00 ,  H01S3/223 ,  H01S5/14 ,  G01J3/10 ,  H01S5/34

CPC分类号： G02F1/3505 ,  G01J3/108 ,  G02F1/3503 ,  G02F1/3551 ,  G02F1/3556 ,  G02F1/3558 ,  H01S3/0092 ,  H01S3/2232 ,  H01S5/0092 ,  H01S5/14 ,  H01S5/3402 ,  G02F2202/101 ,  G02F2203/11

摘要： A laser source includes a first laser device configured to generate a first laser beam having a first wavelength, a second laser device configured to generate a second laser beam having a second wavelength, which is different from the first wavelength, and a non-linear crystal configured to receive simultaneously the first and second laser beams and to generate a third laser beam that has a third wavelength, which is larger than each of the first and second wavelengths. The non-linear crystal has a length and a width, and a variable poling period is distributed across the width so that the third wavelength varies within a given wavelength range based on an incident position of the first and second laser beams along the width of the non-linear crystal.

公开(公告)号：US20240036433A1

公开(公告)日：2024-02-01

申请号：US17875224

申请日：2022-07-27

申请人： MILC, LLC

发明人： Valery Temyanko ,  Leonid Kotov

IPC分类号： G02F1/35 ,  H01S3/094 ,  H01S3/16 ,  H01S3/083 ,  H01S3/136 ,  H01S3/067 ,  G02F1/355

CPC分类号： G02F1/3534 ,  H01S3/094076 ,  H01S3/1643 ,  H01S3/083 ,  H01S3/136 ,  H01S3/1623 ,  H01S3/094038 ,  H01S3/06716 ,  H01S3/1618 ,  G02F1/3558 ,  G02F1/3551

摘要： Systems, devices, and methods of the present invention provide for the effective generation of high-speed modulated light using difference frequency generation (DFG). Modulated light in the mid-IR region may be generated in an optical resonator with a DFG device and having a Q factor greater than about 50 for a signal light with a wavelength in the range between 1350 and 1550 nm. A DFG device may generate the modulated mid-IR light by collinear passage of the intracavity signal light and a modulated pump light having a wavelength in the range between 1000 and 1100 nm through the DFG device. The modulated pump could be used for pumping both a signal lasing media and a DFG device at the same time.

公开(公告)号：US20230384647A1

公开(公告)日：2023-11-30

申请号：US18203263

申请日：2023-05-30

申请人： OZ Optics Ltd.

发明人： Mamoun Wahbeh

IPC分类号： G02F1/35 ,  G02F1/355 ,  G02F1/39

CPC分类号： G02F1/3546 ,  G02F1/3558 ,  G02F1/395 ,  H04B10/70 ,  G02F1/3503 ,  G02F1/3505 ,  G02F1/3526

摘要： Bright entangled photon sources including an alignment-free, fiber-based, mechanically-rugged and generic interferometric module are disclosed. The inherent phase-stability of a Sagnac interferometer is deployed. High down-conversion efficiency of periodically poled nonlinear-waveguides is combined with the optical gain of semiconductor optical amplifiers and immunity of fiber optics. A single compact interferometric engine combines these attributes, allowing highly stable, integrable and bright polarization entangled-photon sources operating at room temperature. Using a minimum number of in-line optical parts, the compact module is based on a novel method that enhances the long-term stability and efficiency without compromising the entanglement quality. Besides energy entanglement, polarization entanglement is presented and set through the operational conditions. An optional periodically poled nonlinear waveguide can be hosted to achieve the desired spectral bandwidth and photons generation rate. The result is a zero-maintenance, lightweight, low-power consumption engine of compact and fully-integrable bright polarization-entangled photon sources.

公开(公告)号：US20230194955A1

公开(公告)日：2023-06-22

申请号：US18014748

申请日：2021-08-19

申请人： JINAN INSTITUTE OF QUANTUM TECHNOLOGY

发明人： Fei ZHOU

IPC分类号： G02F1/39 ,  G02F1/355 ,  G02F1/35

CPC分类号： G02F1/395 ,  G02F1/3558 ,  G02F1/3553 ,  G02F1/3526 ,  G02F1/3503

摘要： A miniaturized PPKTP crystal-based entanglement source system using multi-mode reception is provided, which includes a pump light source, a pump light transmission module, an entanglement device, a first collection device, and a second collection device. In the entanglement source system, entangled lights are received by using multi-mode optical fibers, and an entangled light processing scheme of combining a temporal filtering technology and a spatial filtering technology is applied into a collecting device at one side of the entanglement source system, to form asymmetric device structures in the entanglement source system, to enable multi-mode reception.

公开(公告)号：US20180188633A1

公开(公告)日：2018-07-05

申请号：US15806953

申请日：2017-11-08

申请人： KLA-Tencor Corporation

发明人： Yung-Ho Alex Chuang ,  Xiaoxu Lu ,  Baigang Zhang ,  John Fielden ,  Vladimir Dribinski

IPC分类号： G02F1/35 ,  G02F1/355

CPC分类号： G02F1/353 ,  G02F1/3501 ,  G02F1/3551 ,  G02F1/3558 ,  G02F2001/3503 ,  G02F2001/354

摘要： A laser assembly generates continuous (CW) laser output light in the range of approximately 181 nm to approximately 185 nm by generating fourth harmonic light from first fundamental CW light having a first fundamental wavelength between 1 μm and 1.1 μm, generating fifth harmonic light by mixing the fourth harmonic light with the first fundamental CW light, and then mixing the fifth harmonic light with second fundamental or signal CW light having a second wavelength between 1.26 μm and 1.82 μm. The fifth harmonic light is generated using an external cavity that circulates first fundamental CW light through a first nonlinear crystal, and by directing the fourth harmonic light through the first nonlinear crystal. The laser output light is generated using a second cavity that passes circulated second fundamental or signal CW light through a second nonlinear crystal, and directing the fifth harmonic light through the second nonlinear crystal.

公开(公告)号：US20170183793A1

公开(公告)日：2017-06-29

申请号：US15455370

申请日：2017-03-10

申请人： Government of the United States, as represented by the Secretary of the Air Force

发明人： Vladimir L. Tassev ,  Rita D. Peterson

IPC分类号： C30B25/04 ,  C30B29/42 ,  C30B29/44 ,  G02F1/355 ,  C30B25/18

CPC分类号： C30B25/04 ,  C30B25/18 ,  C30B29/42 ,  C30B29/44 ,  G02F1/3556 ,  G02F1/3558 ,  G02F1/39 ,  G02F2001/392 ,  H01L21/02395 ,  H01L21/02433 ,  H01L21/02461 ,  H01L21/02463 ,  H01L21/02494 ,  H01L21/02505 ,  H01L21/02516 ,  H01L21/02543 ,  H01L21/02609 ,  H01L21/0262 ,  H01L31/03046 ,  H01L31/035236 ,  H01L31/036 ,  H01L31/109 ,  H01L31/1844

摘要： A method of forming a layered OP material is provided, where the layered OP material comprises an OPGaAs template, and a layer of GaP on the OPGaAs template. The OPGaAs template comprises a patterned layer of GaAs having alternating features of inverted crystallographic polarity of GaAs. The patterned layer of GaAs comprises a first feature comprising a first crystallographic polarity form of GaAs having a first dimension, and a second feature comprising a second crystallographic polarity form of GaAs having a second dimension. The layer of GaP on the patterned layer of GaAs comprises alternating regions of inverted crystallographic polarity that generally correspond to their underlying first and second features of the patterned layer of GaAs. Additionally, each of the alternating regions of inverted crystallographic polarity of GaP are present at about 100 micron thickness or more.

公开(公告)号：US09531152B2

公开(公告)日：2016-12-27

申请号：US14891027

申请日：2013-06-06

申请人： Mitsubishi Electric Corporation

发明人： Fumio Shohda ,  Takayuki Yanagisawa ,  Kyosuke Kuramoto ,  Yosuke Akino ,  Kohei Sakai

IPC分类号： H01S3/109 ,  H01S3/063 ,  H01S3/08 ,  G02F1/355

CPC分类号： H01S3/109 ,  G02F1/3558 ,  H01S3/063 ,  H01S3/08009 ,  H01S3/08059 ,  H01S3/08086

摘要： A laser includes a wavelength selecting element 14 that selectively reflects laser beams with wavelengths λ=λ0, λ1, λ2, . . . , λn (n≧1) of different laser oscillation modes from among fundamental oscillation wavelengths of laser beams passing through a wavelength conversion element 13, and the wavelength conversion element 13 that converts the laser beams with the wavelengths λ=λ0, λ1, λ2, . . . , λn (n≧1) of different laser oscillation modes reflected by the wavelength selecting element 14 to harmonics. When using a material with a wide gain band as a laser medium 121 of a solid-state laser element 12, a waveguide laser is implemented capable of carrying out high-efficiency wavelength conversion at a plurality of wavelengths within the gain band.

摘要翻译： 激光器包括选择性地反射波长λ=λ0，λ1，λ2的激光束的波长选择元件14。 。 。 ，通过波长转换元件13的激光束的基本振荡波长中的不同激光振荡模式的λn（n≥1）以及波长λ=λ0，λ1，λ2的激光束的波长转换元件13， 。 。 。 ，由波长选择元件14反射的不同激光振荡模式的λn（n≥1）到谐波。 当使用具有宽增益带的材料作为固体激光元件12的激光介质121时，实现能够在增益带内的多个波长下进行高效波长转换的波导激光器。

公开(公告)号：US09455548B2

公开(公告)日：2016-09-27

申请号：US14676213

申请日：2015-04-01

申请人： Board of Trustees of the University of Alabama

发明人： Seongsin Kim ,  Patrick Kung

IPC分类号： H01S3/10 ,  H01S5/06 ,  G02F1/35 ,  G02F1/355 ,  H01S1/02 ,  H01S5/04 ,  H01S5/30

CPC分类号： H01S5/0604 ,  G02F1/3544 ,  G02F1/3558 ,  G02F2001/3548 ,  G02F2203/13 ,  H01S1/02 ,  H01S5/041 ,  H01S5/3013

摘要： Methods and apparatus for generating terahertz radiation are disclosed herein. In addition, methods for forming orientation-patterned nonlinear semiconductor crystals are disclosed herein. For example, according to an example implementation, a method for generating terahertz radiation may include: providing an optical pulse having a wavelength less than approximately 1.0 μm; and illuminating an orientation-patterned nonlinear semiconductor crystal with the optical pulse.

公开(公告)号：US20160004139A1

公开(公告)日：2016-01-07

申请号：US14772384

申请日：2014-03-13

申请人： RAMOT AT TEL-AVIV UNIVERSITY LTD.

发明人： Ady ARIE ,  Asia SHAPIRA

IPC分类号： G02F1/35 ,  G02F1/37 ,  G02B27/09 ,  G02B5/32 ,  G02F1/355

CPC分类号： G02F1/3544 ,  G02B5/32 ,  G02B27/0927 ,  G02B27/0944 ,  G02F1/3501 ,  G02F1/3553 ,  G02F1/3558 ,  G02F1/37 ,  G02F2001/3546 ,  G02F2001/3548 ,  G02F2203/26 ,  G03H1/08 ,  G03H1/0891

摘要： A method and system for beam shaping employing a non-collinear quasi phase-matched interaction in a crystal whose nonlinear coefficient was encoded by a computer generated hologram is provided herein. The same axis is used for both satisfying the phase-matching requirements and encoding the holographic information. This allows one-dimensional beam shaping using a very simple to fabricate nonlinear crystal pattern and two-dimensional beam shaping with high conversion efficiency. Both are demonstrated by converting a fundamental Gaussian beam into Hermite-Gaussian and Laguerre-Gaussian beams at the second harmonic in KTiOPO4 and stoichiometric lithium tantalate. The suggested scheme enables broad wavelength tuning by simply tilting the crystal.

摘要翻译： 本文提供了一种使用在非线性系数由计算机生成的全息图编码的晶体中的非共线准相位匹配相互作用的波束整形的方法和系统。 相同的轴用于满足相位匹配要求和编码全息信息。 这允许使用非常简单的一维光束成形来制造具有高转换效率的非线性晶体图案和二维光束成形。 两者都通过在KTiOPO4和化学计量的钽酸锂中将基本高斯光束转换为二次谐波的Hermite-Gaussian和Laguerre-Gaussian光束来证明。 建议的方案可以通过简单地倾斜晶体实现宽波长调谐。