Semiconductor laser with photon gain lever
    1.
    发明授权
    Semiconductor laser with photon gain lever 失效
    具有光子增益杆的半导体激光器

    公开(公告)号:US5056100A

    公开(公告)日:1991-10-08

    申请号:US513099

    申请日:1990-04-19

    摘要: A controllable semiconductor laser system including a plurality of semiconductor regions operated at unequal saturation photon densities to permit optical and/or electrical control of lasing in at least one resonant cavity formed therebetween. A pair of such regions may operate as a controllable laser at greater than 100% differential quantum efficiency.

    摘要翻译: 一种可控半导体激光系统,包括在不均匀饱和光子密度下操作的多个半导体区域,以允许在其间形成的至少一个谐振腔中进行激光和/或电控制。 一对这样的区域可以以大于100%的差分量子效率作为可控激光器操作。

    Semiconductor laser noise reduction
    2.
    发明授权
    Semiconductor laser noise reduction 失效
    半导体激光降噪

    公开(公告)号:US5199038A

    公开(公告)日:1993-03-30

    申请号:US699518

    申请日:1991-05-14

    IPC分类号: H01S3/00

    摘要: Amplitude or intensity noise in the output of a laser in detuned operation is reduced by application of a frequency dependent transfer function which exploits amplitude-phase coupled noise described by the linewidth enhancement parameter .alpha. by applying an inverse of a replica of the amplitude noise recovered from the phase noise to the laser output. The noise canceling amplitude is applied to the laser output by a filter whose frequency dependent transfer function is related to the inverse of the amplitude-phase noise transfer function of the laser producing the output. The appropriate transfer function may be selected and/or adjusted in response to the magnitude of the amplitude noise. The intensity noise may be reduced by the factor 1/(1+.alpha..sup.2) which may squeeze the intensity noise below normal quantum limits.

    摘要翻译: 通过施加频率相关的传递函数来减少在失谐操作中的激光器的输出中的幅度或强度噪声,该频率依赖传递函数利用由线宽增强参数α描述的幅度相位耦合噪声,通过应用从 激光输出的相位噪声。 噪声消除幅度通过滤波器施加到激光输出,滤波器的频率相关传递函数与产生输出的激光器的幅度相位噪声传递函数的逆相关。 可以响应于幅度噪声的大小来选择和/或调整适当的传递函数。 强度噪声可以降低因素1 /(1 +α2),这可能将强度噪声挤压到正常量子限度以下。

    Biological and chemical microcavity resonant sensors and methods of detecting molecules
    4.
    发明授权
    Biological and chemical microcavity resonant sensors and methods of detecting molecules 有权
    生物和化学微腔谐振传感器和分子检测方法

    公开(公告)号:US07781217B2

    公开(公告)日:2010-08-24

    申请号:US11733480

    申请日:2007-04-10

    IPC分类号: G01N23/00

    摘要: Resonant sensors and methods of detecting specific molecules with enhanced sensitivity. Optical energy is introduced into a microcavity, such as a silica toroid-shaped microcavity. The microcavity sensor has a functionalized outer surface and a sufficiently high Q value to generate an evanescent optical field with increased intensity. A molecule bound to the functionalized outer surface interacts with the external optical field, thereby heating the microcavity and generating a detectable resonant wavelength shift, which indicates a small number of molecules, even a single molecule, without the use of fluorescent or metal labels. Resonant sensors and methods can also be used to detect specific molecules, even a single molecule, within an environment. One application is detecting very small quantities or a single molecule of heavy water in ordinary water.

    摘要翻译: 共振传感器和检测具有增强灵敏度的特定分子的方法。 将光能引入到微腔中,例如二氧化硅环形微腔。 微腔传感器具有功能化的外表面和足够高的Q值以产生具有增加的强度的渐逝光场。 结合到官能化外表面的分子与外部光场相互作用,从而加热微腔并产生可检测的共振波长漂移,其表示少量分子,甚至单个分子,而不使用荧光或金属标记。 谐振传感器和方法也可用于检测环境中的特定分子,甚至单个分子。 一种应用是在普通水中检测非常少的量或单一分子的重水。

    Fiber-coupled microsphere Raman laser

    公开(公告)号:US07003002B2

    公开(公告)日:2006-02-21

    申请号:US10967515

    申请日:2004-10-18

    IPC分类号: H01S3/30 H01S3/08

    摘要: The present invention is a Raman laser and methods related thereto. In the preferred embodiments, the Raman laser comprises a laser pump signal in a fiber waveguide which is optically coupled to a micro-resonator through a fiber taper. The micro-resonator is constructed from a material that has a high Q when it is formed into a micro-resonator and is phase matched to the waveguide. The lasing frequency can be determined based upon the pump input or the micro-resonator material. In the preferred embodiments, the micro-resonator is constructed from a fused silica material. The present invention provides a compact laser with improved emissions and coupling efficiencies and the ability to use stimulated Raman scattering effects to create lasers having frequencies that are otherwise difficult to obtain. Alternative configurations include multiple micro-resonators on a single fiber waveguide and/or utilizing multiple waveguides attached to one or more micro-resonators. The Raman laser can be made to operate in a continuous-wave as opposed to self-pulsing mode.

    OPTICAL JUNCTION APPARATUS AND METHODS EMPLOYING OPTICAL POWER TRANSVERSE-TRANSFER
    10.
    发明申请
    OPTICAL JUNCTION APPARATUS AND METHODS EMPLOYING OPTICAL POWER TRANSVERSE-TRANSFER 有权
    光接口装置和采用光功率转换的方法

    公开(公告)号:US20100024192A1

    公开(公告)日:2010-02-04

    申请号:US12510273

    申请日:2009-07-28

    IPC分类号: B23P17/04

    摘要: A method comprises: forming an optical device on a device substrate; forming a first optical waveguide on the device or device substrate; forming a second, structurally discrete optical waveguide on a structurally discrete waveguide substrate; and assembling the optical device, first waveguide, or device substrate with the second waveguide or waveguide substrate. The device and first waveguide are arranged for transferring an optical signal between the device and the first waveguide. Upon assembly the first and second waveguides are positioned between the device and waveguide substrates and are relatively positioned for transferring the optical signal therebetween via optical transverse coupling. The first or second optical waveguide is arranged for transferring the optical signal therebetween via substantially adiabatic optical transverse coupling with the first and second waveguides so positioned.

    摘要翻译: 一种方法包括:在器件衬底上形成光学器件; 在所述器件或器件衬底上形成第一光波导; 在结构上分立的波导衬底上形成第二个结构分立的光波导; 以及将所述光学器件,第一波导或器件基板与所述第二波导或波导基板组装。 器件和第一波导被布置用于在器件和第一波导之间传送光信号。 在组装时,第一和第二波导位于器件和波导基片之间,并且被相对定位以通过光学横向耦合传递其间的光学信号。 第一或第二光波导被布置用于通过基本绝热的光学横向耦合将光信号转移到第一和第二波导的位置。