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    Energy meter circuit for short and low-intensity laser pulses
    2.
    发明授权
    Energy meter circuit for short and low-intensity laser pulses 有权

    公开(公告)号：US11435232B1

    公开(公告)日：2022-09-06

    申请号：US17744042

    申请日：2022-05-13

    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

    Inventor： Khaled Gasmi

    IPC: H01S3/00 ,  G01J5/10 ,  H01S3/11 ,  H01S3/20 ,  H01S3/16 ,  H01S3/091 ,  H01S3/092

    Abstract: A laser energy meter circuit, method, and system for measuring excitation and ionization of a reactant. The laser energy meter circuit includes a pyroelectric detector head configured to receive laser pulses and output current signals; an amplifier having a first amplifier input and an amplifier output configured to generate amplified voltage signals; a sample-and-hold circuit; a trigger circuit connected to a second sample-and-hold input, wherein the trigger circuit is configured to receive a TTL signal and generate a delayed output pulse, Q1 and a trigger signal, Q2; a sample-and-hold circuit output configured to output the maximum pulse voltage when the trigger signal is received at the second sample-and-hold input; a switched capacitor bank connected to the sample-and-hold circuit output; and a peak detector circuit configured to measure a magnitude of the maximum pulse voltage and generate an averaged DC maximum pulse voltage signal.

    Solid-state suspension laser generation utilizing separate excitation and extraction
    5.
    发明授权
    Solid-state suspension laser generation utilizing separate excitation and extraction 有权
    利用单独激发和提取的固态悬浮激光产生

    公开(公告)号：US08000362B2

    公开(公告)日：2011-08-16

    申请号：US12592232

    申请日：2009-11-20

    Applicant: Alexander A. Betin ,  Kalin Spariosu

    Inventor： Alexander A. Betin ,  Kalin Spariosu

    IPC: H01S3/14 ,  H01S3/17 ,  H01S3/20

    CPC classification number: H01S3/0602 ,  H01S3/02 ,  H01S3/0612 ,  H01S3/1603 ,  H01S3/169 ,  H01S3/20

    Abstract: A solid-state suspension laser. The novel laser includes a gain medium comprised of a plurality of solid-state gain particles suspended in a fluid. The laser also includes a pump source for pumping the gain particles and a resonator for amplifying and outputting laser light generated by the gain medium. In an illustrative embodiment, the gain medium is adapted to flow, and the pumping of the gain medium occurs outside of the resonator. The flow velocities and the densities of the gain particles in the gain medium can be optimized for optimal absorption efficiency during the pumping and/or for optimal extraction efficiency in the resonator as well as for overall laser performance optimization, including power, efficiency and beam quality scalability.

    Abstract translation: 固态悬浮激光器。 新型激光器包括由悬浮在流体中的多个固态增益粒子组成的增益介质。 激光器还包括用于泵浦增益粒子的泵浦源和用于放大和输出由增益介质产生的激光的谐振器。 在说明性实施例中，增益介质适于流动，并且增益介质的泵浦发生在谐振器外部。 可以优化增益介质中增益粒子的流速和密度，以便在泵浦期间实现最佳吸收效率和/或谐振器中的最佳提取效率以及整体激光性能优化，包括功率，效率和光束质量 可扩展性。

    Microfluidic Lasers
    6.
    发明申请
    Microfluidic Lasers 审中-公开
    微流控激光器

    公开(公告)号：US20100303119A1

    公开(公告)日：2010-12-02

    申请号：US11794919

    申请日：2006-02-08

    Applicant: Brian T. Mayers ,  Richard S. Conroy ,  Dmitri V. Vezenov ,  Preston Snee ,  Yinthai Chan ,  Moungi G. Bawendi ,  George M. Whitesides

    Inventor： Brian T. Mayers ,  Richard S. Conroy ,  Dmitri V. Vezenov ,  Preston Snee ,  Yinthai Chan ,  Moungi G. Bawendi ,  George M. Whitesides

    IPC: H01S3/213 ,  H01S3/05 ,  H01S3/20

    CPC classification number: H01S3/05 ,  H01S3/213

    Abstract: The present invention generally relates to lasers comprising fluidic channels, such as microfluidic channels. In some instances, the channel contains two or more fluids. The fluids may remain non-mixed within the channel, for example, due to immiscibility and/or laminar flow within the channel. The fluids may be arranged in the channel such that light propagating in a first fluid is prevented by the second fluid from exiting the first fluid, for example, due to differences in the indexes of refraction (e.g., causing internal reflection of the fluid to occur). Thus, in one embodiment, a first fluid may be at least partially surrounded by a second fluid having a second index of refraction lower than the index of refraction of the first fluid. In some embodiments, the fluidic channel is used as a laser, for instance, a dye laser, i.e., a laser created by directing light at a dye to produce coherent light. The dye may be present in one or more fluids within the fluidic channel. The incident light (for example, created by another laser) may be directed at the channel from any angle. In some cases, laser light may be produced in a direction substantially aligned with the longitudinal axis of the channel. In some embodiments, the laser is free of mirrors, prisms, or gratings, or the laser may produce coherent light using a non-resonant photonic pathway. However, in other cases, mirrors, prisms, or gratings may be used to reflect light along the channel to enhance stimulated emission of coherent light. Another aspect of the invention includes optical diffractors, such as prisms or gratings, which can contain a fluid. The optical diffractors, in certain embodiments, are positioned to diffract light, such as coherent light, emanating from the fluidic channel. Still other aspects of the invention provide devices, kits, and methods of making and using such lasers.

    Abstract translation: 本发明一般涉及包括流体通道的激光器，例如微流体通道。 在一些情况下，通道包含两种或更多种流体。 流体可以在通道内保持不混合，例如，由于通道内的不混溶和/或层流。 流体可以布置在通道中，使得通过第二流体从第一流体中排出的光例如由于折射率的差异（例如，引起流体的内部反射）而被阻止在第一流体中传播的光 ）。 因此，在一个实施例中，第一流体可以至少部分地被具有低于第一流体的折射率的第二折射率的第二流体包围。 在一些实施例中，流体通道用作激光器，例如染料激光器，即通过在染料处引导光以产生相干光而产生的激光。 染料可存在于流体通道内的一种或多种流体中。 入射光（例如，由另一激光产生的）可以从任何角度指向通道。 在一些情况下，可以在与通道的纵向轴线基本对准的方向上产生激光。 在一些实施例中，激光器不含镜子，棱镜或光栅，或者激光可以使用非共振光子通道产生相干光。 然而，在其他情况下，可以使用反射镜，棱镜或光栅来沿着通道反射光以增强相干光的受激发射。 本发明的另一方面包括可以包含流体的光学衍射器，例如棱镜或光栅。 在某些实施例中，光衍射器被定位成衍射从流体通道发出的光，例如相干光。 本发明的其它方面提供了制造和使用这种激光器的装置，套件和方法。

    Laser oscillation elements
    7.
    发明授权
    Laser oscillation elements 有权
    激光振荡元件

    公开(公告)号：US07826510B2

    公开(公告)日：2010-11-02

    申请号：US10575238

    申请日：2004-10-08

    Applicant: Hideo Takezoe ,  Junji Watanabe ,  Myoung Hoon Song ,  Byoungchoo Park ,  Ki-Chul Shin ,  Takehiro Toyooka ,  Suzushi Nishimura

    Inventor： Hideo Takezoe ,  Junji Watanabe ,  Myoung Hoon Song ,  Byoungchoo Park ,  Ki-Chul Shin ,  Takehiro Toyooka ,  Suzushi Nishimura

    IPC: H01S3/20

    CPC classification number: H01S3/213 ,  G02B5/3016 ,  G02F1/13718 ,  H01S3/063 ,  H01S3/08059 ,  H01S3/094034 ,  H01S3/0943 ,  H01S3/1628 ,  H01S3/1686

    Abstract: A laser oscillation element 1 according to the invention comprises a cholesteric liquid crystal layer 2 containing cholesteric liquid crystals, a cholesteric liquid crystal layer 3 containing cholesteric liquid crystals facing the cholesteric liquid crystal layer 2, and a defect layer 4 containing a dye 5 which emits fluorescence upon optical excitation disposed between the cholesteric liquid crystal layers 2, 3. A selective reflection wavelength band in the cholesteric liquid crystals overlaps with the emission band of the fluorescence emitted by the dye 5, the helical winding directions of the cholesteric liquid crystals contained in the cholesteric liquid crystal layers 2, 3 are identical, and the transition moments of the dye 5 are aligned parallel to the surfaces of the cholesteric liquid crystal layers 2, 3. According to the laser oscillation element 1, a laser oscillation can be generated with high efficiency. Moreover, continuous wave lasing can be generated.

    Abstract translation: 根据本发明的激光振荡元件1包括胆甾醇型液晶层2，胆甾醇型液晶层2，胆甾醇型液晶层3，胆甾型液晶层3，胆甾型液晶层2，以及含有染料5的缺陷层4， 在胆甾醇型液晶层2,3之间的光学激发时的荧光。胆甾型液晶中的选择性反射波长带与染料5发出的荧光的发射带重叠，胆甾型液晶的螺旋卷绕方向包含在 胆甾型液晶层2,3相同，染料5的过渡时刻平行于胆甾型液晶层2,3的表面排列。根据激光振荡元件1，可以产生激光振荡 高效率。 此外，可以产生连续波浪激光。

    Semiconductor device and optical apparatus
    8.
    发明授权
    Semiconductor device and optical apparatus 有权
    半导体装置及光学装置

    公开(公告)号：US07700955B2

    公开(公告)日：2010-04-20

    申请号：US11982930

    申请日：2007-11-06

    Applicant: Yasuaki Kuwata ,  Hideo Nakayama ,  Ryoji Ishii ,  Kayoko Nakamura

    Inventor： Yasuaki Kuwata ,  Hideo Nakayama ,  Ryoji Ishii ,  Kayoko Nakamura

    IPC: H01L29/26 ,  H01L27/15 ,  H01L29/267 ,  G02B6/26 ,  G02B6/36 ,  H01S5/00 ,  H01S3/20 ,  H01S3/08

    CPC classification number: H01L27/15 ,  H01L31/173 ,  H01L33/38

    Abstract: A semiconductor device includes a substrate, a semiconductor layer formed on the substrate, and an optically functional portion formed by using at least a portion of the semiconductor layer. The optically functional portion performs light emission or light reception. The semiconductor device further includes a first driving electrode that is electrically connected to a semiconductor layer on a surface of the optically functional portion, and the first driving electrode drives the optically functional portion. The semiconductor device further includes an encapsulating electrode that is formed on the semiconductor layer to surround periphery of the optically functional portion, and electrically connected to the first driving electrode.

    Abstract translation: 半导体器件包括衬底，形成在衬底上的半导体层和通过使用半导体层的至少一部分形成的光学功能部分。 光学功能部分执行发光或光接收。 半导体器件还包括与光学功能部分的表面上的半导体层电连接的第一驱动电极，第一驱动电极驱动光学功能部分。 半导体器件还包括封装电极，其形成在半导体层上以围绕光学功能部分的周围，并且电连接到第一驱动电极。

    Solid-state suspension laser with separate excitation and extraction
    9.
    发明授权
    Solid-state suspension laser with separate excitation and extraction 失效
    固态悬浮激光器具有单独的激发和提取

    公开(公告)号：US07646796B2

    公开(公告)日：2010-01-12

    申请号：US11804804

    申请日：2007-05-21

    Applicant: Alexander A. Betin ,  Kalin Spariosu

    Inventor： Alexander A. Betin ,  Kalin Spariosu

    IPC: H01S3/17 ,  H01S3/20 ,  H01S3/14

    CPC classification number: H01S3/0602 ,  H01S3/02 ,  H01S3/0612 ,  H01S3/1603 ,  H01S3/169 ,  H01S3/20

    Abstract: A laser. The novel laser includes a gain medium, a pump source adapted to optically excite the gain medium in a first location, and a resonator adapted to extract energy from the gain medium in a second location distinct from the first location. In an illustrative embodiment, the gain medium is comprised of a plurality of solid-state gain particles suspended in a fluid. The gain medium is adapted to flow, and optical excitation of the gain medium occurs outside of the resonator. In a preferred embodiment, the flow velocity and the density of gain particles in the gain medium are adjusted for optimal absorption efficiency during optical excitation and then for optimal extraction efficiency in the resonator. In addition, the resonator may be shaped for optimal extraction efficiency, while pump modules that hold the gain medium during optical excitation are shaped for optimal absorption efficiency.

    Abstract translation: 雷射。 新型激光器包括增益介质，适于在第一位置光学激发增益介质的泵浦源，以及适于在不同于第一位置的第二位置从增益介质提取能量的谐振器。 在说明性实施例中，增益介质由悬浮在流体中的多个固态增益粒子组成。 增益介质适于流动，并且增益介质的光激发发生在谐振器外部。 在优选实施例中，调节增益介质中的增益粒子的流速和密度，以获得在光学激发期间的最佳吸收效率，然后在谐振器中获得最佳的提取效率。 此外，谐振器可以被成形为用于最佳的提取效率，而在光学激发期间保持增益介质的泵模块被成形以获得最佳的吸收效率。

    TRIPLET QUENCHER FOR USE IN LASERS
    10.
    发明申请
    TRIPLET QUENCHER FOR USE IN LASERS 有权
    TRIPLET QUENCHER用于激光

    公开(公告)号：US20080298421A1

    公开(公告)日：2008-12-04

    申请号：US12056358

    申请日：2008-03-27

    Applicant: Eric F. Bernstein

    Inventor： Eric F. Bernstein

    IPC: H01S3/20

    CPC classification number: H01S3/213

    Abstract: There are disclosed compounds for assisting triplet absorption in a laser, such as a pulsed-dye laser, the compounds comprising at least one molecule chosen from nitroxides and nitrones. In one embodiment, the disclosed compounds may be mixed with the dye of a dye laser in an amount sufficient to assist in triplet absorption. In one embodiment, the nitroxide compound comprises tempol [4-hydroxy-2,2,6,6-tetramethyl-piperidinyloxy, free radical]. Also disclosed are methods of using the disclosed compounds to control the triplet absorption of a dye laser or improve the performance or life span of a gaseous or solid laser.

    Abstract translation: 公开了用于辅助激光的三重态吸收的化合物，例如脉冲染料激光，所述化合物包含至少一种选自硝基氧和硝酸根的分子。 在一个实施方案中，所公开的化合物可以与染料激光的染料以足以辅助三重态吸收的量混合。 在一个实施方案中，硝基氧化合物包含温溶醇[4-羟基-2,2,6,6-四甲基 - 哌啶基氧基，自由基]。 还公开了使用所公开的化合物来控制染料激光器的三线态吸收或改善气体或固体激光器的性能或寿命的方法。

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