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公开(公告)号：US5271025A
公开(公告)日：1993-12-14
申请号：US926058
申请日：1992-08-05
Applicant: Stephen C. Rand
Inventor： Stephen C. Rand
CPC classification number: H01S3/094 , H01S3/081 , H01S3/094038 , H01S3/094092 , H01S3/1121 , H01S3/117 , H01S3/1608 , H01S3/165 , H01S3/1653
Abstract: A laser source which operated under the principals of cooperative unconversion produces controllable optical pulses at wavelengths which are shorter than the wavelength of the laser energy which pumps the gain medium. The source is a solid-state laser which employs a five percent Er:LiYF.sub.4 crystal which is arranged in an astigmatically-compensated 3-mirror cavity. Pumping is achieved at 1.5 microns in the infrared, and the system operates in a continuous-wave, mode-locked fashion in the green spectral region at approximately 544 nm. The cooperative inversion mechanism involves energy pooling by trios of excited rare earth dopant ions in the laser medium. Q-switching is achieved with the use of intracavity amplitude modulation so as to achieve three-fold upconversion. A 3-mirror astigmatically-compensated cavity with the gain medium permits modulation of losses in a manner which cannot be achieved with known systems and achieves high stability.
Abstract translation: 在协作非转换的原理下运行的激光源产生的波长比可以泵送增益介质的激光能量的波长短的可控光脉冲。 该源是固态激光器，其采用布置在散光补偿的3镜腔中的5％Er：LiYF4晶体。 在红外线中以1.5微米的速度实现泵送，并且系统以约544nm的绿色光谱区域中的连续波，锁模方式工作。 合作反演机制涉及在激光介质中通过激发的稀土掺杂剂离子的三聚体的能量收集。 通过使用腔内振幅调制实现Q开关，以实现三重向上转换。 具有增益介质的3镜式散光补偿腔允许以已知系统无法实现的方式调制损耗并实现高稳定性。
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公开(公告)号：USH668H
公开(公告)日：1989-09-05
申请号：US870048
申请日：1986-06-03
Applicant: Stephen C. Rand
Inventor： Stephen C. Rand
CPC classification number: G02F1/3515 , G02B6/2821
Abstract: A nonlinear second order signal processing apparatus having a number of high quality optical fibers that are embedded in a nonlinear optical material in such a way that their cores are in evanescent contact with one another and the nonlinear medium.
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公开(公告)号：US4784716A
公开(公告)日：1988-11-15
申请号：US795572
申请日：1985-11-06
Applicant: Stephen C. Rand , Ricardo C. Pastor
Inventor： Stephen C. Rand , Ricardo C. Pastor
CPC classification number: G02F1/383 , C30B29/22 , C30B33/00 , G02B6/02 , Y10S117/918 , Y10S359/90
Abstract: A process of fabricating a hybrid single crystal fiber having nonlinear optical properties such as frequency doubling. Said process includes applying a force to a fiber core resting upon a bulk nonlinear crystal such as LiIO.sub.3 in a saturated solution of LiIO.sub.3 in water. After the core is embedded a sufficient distance into the crystal the force is removed.
Abstract translation: 制造具有非线性光学特性如混频的混合单晶光纤的工艺。 所述方法包括在LiIO3在水中的饱和溶液中的纤维核上施加力，所述纤维芯位于诸如LiIO 3之类的体非线性晶体上。 在芯体嵌入足够的距离进入晶体之后，力被去除。
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4.发明授权公开(公告)号：US09274045B2
公开(公告)日：2016-03-01
申请号：US13810621
申请日：2011-05-16
Applicant: Stephen C. Rand , William M. Fisher
Inventor： Stephen C. Rand , William M. Fisher
CPC classification number: H01S5/041 , G01N21/21 , G02F1/09 , G02F1/3534 , G02F2203/13 , H01S5/02236 , H02J7/022 , H02J7/32 , H02M7/003 , H02M7/06 , Y02E10/56
Abstract: Schemes are described to produce quasi-static charge separation, Terahertz radiation, and programmable magnetic field generation using linearly-polarized light in unbiased, transparent insulators. The methods exploit a recently-observed magneto-electric optical nonlinearity that produces intense magnetization in undoped, homogeneous dielectrics. Analysis reveals that strong magnetic effects can be induced at modest optical intensities even with incoherent light. Consequently, efficient solar power conversion is feasible without the semiconductor processing or electron-hole pair generation that is required in conventional photovoltaic cells. Additionally, conditions and techniques are described to generate intense THz radiation in unbiased substrates and large magnetic fields orientated transverse to the direction of propagation of light, without the need for any external permanent magnetic or electromagnetic apparatus.
Abstract translation: 这些方案被描述为产生准静态电荷分离，太赫兹辐射和使用无偏差透明绝缘体中的线性偏振光的可编程磁场产生。 该方法利用最近观察到的磁电光学非线性，其在未掺杂的均匀电介质中产生强磁化。 分析表明，即使使用非相干光，也可以在适度的光学强度下诱导强的磁效应。 因此，在常规光伏电池中不需要半导体加工或电子 - 空穴对生成的情况下，有效的太阳能转换是可行的。 另外，描述了条件和技术以在无偏压的基板和横向于光的传播方向定向的大磁场中产生强烈的THz辐射，而不需要任何外部永磁或电磁装置。
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公开(公告)号：US06656588B1
公开(公告)日：2003-12-02
申请号：US09857151
申请日：2001-07-30
Applicant: Richard M. Laine , Stephen C. Rand , Thomas Hinklin , Guy R. Williams
Inventor： Richard M. Laine , Stephen C. Rand , Thomas Hinklin , Guy R. Williams
IPC: C01F100
CPC classification number: B82Y30/00 , C01B13/185 , C01F7/30 , C01F17/0043 , C01P2002/52 , C01P2002/54 , C01P2002/82 , C01P2002/84 , C01P2002/85 , C01P2004/03 , C01P2004/62 , C01P2004/64 , C01P2006/12 , C01P2006/60 , H01S3/14 , Y10T428/25 , Y10T428/2982 , Y10T428/2991
Abstract: Doped, nanosize metal oxide particles have been shown to exhibit stimulated emission and continuous-wave laser action when energized appropriately, for example by electron beams. The doped particles are useful as solid state lasing devices and “laser paints”. Particles containing homogeneously distributed dopant atoms in concentrations greater than the thermodynamic solubility in the metal oxide matrix, and having in some circumstances, unusual oxidation states, have been produced.
Abstract translation: 掺杂的纳米尺寸金属氧化物颗粒已被证明在适当地通电时（例如通过电子束）表现出受激发射和连续波激光作用。 掺杂颗粒可用作固体激光装置和“激光涂料”。 已经产生了含有均匀分布的掺杂剂原子的颗粒，其浓度大于金属氧化物基质中的热力学溶解度，并且在某些情况下具有不寻常的氧化态。
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Patent Agency Ranking
公开(公告)号：US4824455A
公开(公告)日：1989-04-25
申请号：US43565
申请日：1987-04-28
Applicant: Stephen C. Rand , Joseph A. Wysocki
Inventor： Stephen C. Rand , Joseph A. Wysocki
IPC: G02B6/024 , C03B37/027 , C03C25/10 , G02B6/10
CPC classification number: G02B6/105 , C03B37/027 , C03B37/02709 , C03C25/107 , C03C25/108 , C03B2203/02 , C03B2203/30
Abstract: An improved polarization preserving birefringent fiber optic member is provided having cross-sectional circular cladding and core members of soft glasses. A metallic coating of an approximately circular configuration, that is offset from the axis of the core and cladding members, is provided with sufficient thickness to provide an anisotropic variation in compressional strain on the core member to create the anisotropy of the refracted index of the core member for preserving polarization characteristics. The optical fiber can be formed by heating a mechanical composite of a core rod and cladding tube, drawing the core and cladding to form a fused fiber and transporting the drawn fiber through a coating bath to provide the variation in thickness.
Abstract translation: 提供了一种改进的偏振保留双折射光纤构件，其具有横截面圆形包层和软玻璃的核心构件。 具有大致圆形构造的金属涂层，其从芯部和包层部件的轴线偏移，具有足够的厚度以提供芯部件上的压缩应变的各向异性变化，以产生芯的折射率的各向异性 保持极化特性的成员。 光纤可以通过加热芯棒和包覆管的机械复合材料，拉伸芯和包层以形成熔融纤维并将拉伸的纤维传送通过涂层浴以形成厚度变化来形成。
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公开(公告)号：US5117437A
公开(公告)日：1992-05-26
申请号：US487885
申请日：1990-03-02
Applicant: Stephen C. Rand
Inventor： Stephen C. Rand
CPC classification number: H01S3/16 , H01S3/09403
Abstract: Continuous laser action is sustained by a new pumping mechanism which relies exclusively on cooperative electronic transitions of coupled atoms or ions in solids. The present invention is the first of a new class of laser device which depends on energy-sharing interactions between colliding atoms in gases or active dopants in solid laser media to create the population inversion needed for amplification of light. In one specific embodiment, a laser crystal which is formed of calcium fluoride is doped heavily with trivalent erbium, and is provided with reflective coatings on respective first and second surfaces. A pumping energy is supplied whereby a pair of atoms are elevated to an initial excited state. Subsequently, one of the atoms loses energy so as to assume a ground state, the energy released thereby being made available to excite the second atom to a still higher quantum energy state. Thus, a cooperative energy interaction between the pair of atoms results in the double excitation of one of the atoms above the initial excitation state. The excited ion subsequently, upon relaxation to its initial excited energy level, causes the issuance of the laser photon. The invention is not limited to solid laser media, and may be employed in gas or liquid laser systems. Additionally, transition metal ions may be employed as an alternative to rare earth ions.
Abstract translation: 连续的激光作用是由一种新的泵送机制来维持的，这种机制完全依靠固体中耦合原子或离子的协同电子跃迁。 本发明是一类新型激光装置中的第一种，其依赖于在固体激光介质中的气体或活性掺杂剂中碰撞原子之间的能量共享相互作用，以产生放大光所需的群体反演。 在一个具体实施方案中，由氟化钙形成的激光晶体用三价铒重掺杂，并且在相应的第一和第二表面上设置有反射涂层。 提供泵送能量，由此一对原子升高到初始激发态。 随后，其中一个原子失去能量以便呈现基态，释放的能量可用于将第二原子激发到更高的量子能态。 因此，一对原子之间的协同能量相互作用导致在初始激发态之上的原子之一的双重激发。 随后激发的离子在弛豫到其初始激发能级之后，导致发出激光光子。 本发明不限于固体激光介质，也可用于气体或液体激光系统。 此外，可以使用过渡金属离子作为稀土离子的替代物。
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公开(公告)号：US5038358A
公开(公告)日：1991-08-06
申请号：US525387
申请日：1990-05-17
Applicant: Stephen C. Rand
Inventor： Stephen C. Rand
CPC classification number: H01S3/16 , H01S3/09403
Abstract: Continuous laser action is sustained by a new pumping mechanism which relies exclusively on cooperative electronic transitions of coupled atoms or ions in solids. The laser depends on energy-sharing interactions between a trio of atoms in gases or active dopants in solid laser media to create the population inversion needed for amplification of light. In one specific embodiment, the laser crystal is formed of calcium fluoride doped heavily with trivalent erbium, and is provided with reflective coatings on respective first and second surfaces. A pumping energy is supplied whereby a three atoms are elevated to an initial excited state. Subsequently, two of the atoms lose energy so as to assume a ground state, the energy released thereby being made available to excite the third atom to a still higher quantum energy state. Thus, a cooperative energy interaction between the trio of atoms results in the double excitation of one of the atoms above the initial excitation state. The excited ion subsequently, upon relaxation to its initial excited energy level, causes the issuance of the laser photon.
Abstract translation: 连续的激光作用是由一种新的泵送机制来维持的，这种机制完全依靠固体中耦合原子或离子的协同电子跃迁。 激光取决于固体激光介质中气体中三重原子或活性掺杂剂之间的能量分配相互作用，以产生放大光所需的群体反演。 在一个具体实施例中，激光晶体由掺杂有三价铒的氟化钙形成，并且在相应的第一和第二表面上设置有反射涂层。 提供泵送能量，由此三个原子升高到初始激发态。 随后，两个原子失去能量以便呈现基态，由此释放的能量可用于将第三原子激发到更高的量子能态。 因此，三原子之间的协同能量相互作用导致在初始激发态之上的原子之一的双重激发。 随后激发的离子在弛豫到其初始激发能级之后，导致发出激光光子。
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9.发明申请公开(公告)号：US20130292546A1
公开(公告)日：2013-11-07
申请号：US13810621
申请日：2011-05-16
Applicant: Stephen C. Rand , William M. Fisher
Inventor： Stephen C. Rand , William M. Fisher
CPC classification number: H01S5/041 , G01N21/21 , G02F1/09 , G02F1/3534 , G02F2203/13 , H01S5/02236 , H02J7/022 , H02J7/32 , H02M7/003 , H02M7/06 , Y02E10/56
Abstract: Schemes are described to produce quasi-static charge separation, Terahertz radiation, and programmable magnetic field generation using linearly-polarized light in unbiased, transparent insulators. The methods exploit a recently-observed magneto-electric optical nonlinearity that produces intense magnetization in undoped, homogeneous dielectrics. Analysis reveals that strong magnetic effects can be induced at modest optical intensities even with incoherent light. Consequently, efficient solar power conversion is feasible without the semiconductor processing or electron-hole pair generation that is required in conventional photovoltaic cells. Additionally, conditions and techniques are described to generate intense THz radiation in unbiased substrates and large magnetic fields orientated transverse to the direction of propagation of light, without the need for any external permanent magnetic or electromagnetic apparatus.
Abstract translation: 这些方案被描述为产生准静态电荷分离，太赫兹辐射和使用无偏差透明绝缘体中的线性偏振光的可编程磁场产生。 该方法利用最近观察到的磁电光学非线性，其在未掺杂的均匀电介质中产生强磁化。 分析表明，即使使用非相干光，也可以在适度的光学强度下诱导强的磁效应。 因此，在常规光伏电池中不需要半导体加工或电子 - 空穴对生成的情况下，有效的太阳能转换是可行的。 另外，描述了条件和技术以在无偏压的基板和横向于光的传播方向定向的大磁场中产生强烈的THz辐射，而不需要任何外部永磁或电磁装置。
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公开(公告)号：US4895422A
公开(公告)日：1990-01-23
申请号：US283699
申请日：1988-12-13
Applicant: Stephen C. Rand , Robert A. Cronkite
Inventor： Stephen C. Rand , Robert A. Cronkite
IPC: G02F1/383
CPC classification number: G02F1/383
Abstract: A nonlinear fiber-optic device including a single mode optical fiber having a longitudinal axis, for transmitting light therethrough of a given wavelength, and having a core and a cladding layer, a portion of the cladding layer being removed until a remaining portion of the cladding layer has a thickness of about one half of the given wavelength or less, and a nonlinear optical crystal having an optical axis, in contact with said remaining portion of the cladding layer, the optical axis of the crystal being substantially perpendicular to the longitudinal axis of the fiber.
Abstract translation: 一种非线性光纤装置，包括具有纵轴的单模光纤，用于透射具有给定波长的光，并具有芯和包层，所述包层的一部分被去除直到覆盖层的剩余部分 层的厚度约为给定波长的一半或更小，并且具有与包层的所述剩余部分接触的光轴的非线性光学晶体，晶体的光轴基本上垂直于 纤维。
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