Linearly polarized fiber amplifier
    2.
    发明授权
    Linearly polarized fiber amplifier 有权
    线性偏振光纤放大器

    公开(公告)号:US06825974B2

    公开(公告)日:2004-11-30

    申请号:US10011553

    申请日:2001-11-06

    IPC分类号: H01S300

    摘要: Optically pumped rare-earth-doped polarizing fibers exhibit significantly higher gain for one linear polarization state than for the orthogonal state. Such a fiber can be used to construct a single-polarization fiber laser, amplifier, or amplified-spontaneous-emission (ASE) source without the need for additional optical components to obtain stable, linearly polarized operation.

    摘要翻译: 光学泵浦稀土掺杂的偏振光纤在一个线性极化状态下显示出比正交状态显着更高的增益。 这种光纤可用于构造单偏振光纤激光器,放大器或放大自发发射(ASE)源,而不需要额外的光学部件来获得稳定的线性极化操作。

    BACK-REFLECTION PROTECTION AND MONITORING IN FIBER AND FIBER-DELIVERED LASERS

    公开(公告)号:US20200064573A1

    公开(公告)日:2020-02-27

    申请号:US16417337

    申请日:2019-05-20

    申请人: Dahv A. V. Kliner

    发明人: Dahv A. V. Kliner

    IPC分类号: G02B6/42 H01S3/094 H01S3/00

    摘要: A system includes an optical fiber situated to propagate a laser beam received from a laser source to an output of the optical fiber, a first cladding light stripper optically coupled to the optical fiber and situated to extract at least a portion of forward-propagating cladding light in the optical fiber, and a second cladding light stripper optically coupled to the optical fiber between the first cladding light stripper and the optical fiber output and situated to extract at least a portion of backward-propagating cladding light in the optical fiber.

    Optical amplifier exhibiting net phase-mismatch selected to at least partially reduce gain-induced phase-matching during operation and method of operation
    6.
    发明授权
    Optical amplifier exhibiting net phase-mismatch selected to at least partially reduce gain-induced phase-matching during operation and method of operation 有权
    显示净相位失配的光放大器被选择以至少部分地减少操作期间的增益诱导相位匹配和操作方法

    公开(公告)号:US07880961B1

    公开(公告)日:2011-02-01

    申请号:US11800383

    申请日:2007-05-04

    IPC分类号: H01S3/00

    摘要: An optical amplifier, such as an optical waveguide amplifier (e.g., an optical fiber amplifier or a planar waveguide) or a non-guiding optical amplifier, that exhibits a net phase-mismatch selected to at least partially reduce gain-induced phase-matching during operation thereof is disclosed. In one aspect of the invention, an optical amplifier structure includes at least one optical amplifier having a length and a gain region. The at least one optical amplifier exhibits a net phase-mismatch that varies along at least part of the length thereof selected to at least partially reduce gain-induced phase-matching during operation thereof.

    摘要翻译: 一种光放大器,例如光波导放大器(例如,光纤放大器或平面波导)或非引导光放大器,其表现出净相位失配,其被选择为至少部分地减小增益引起的相位匹配期间 公开了其操作。 在本发明的一个方面,光放大器结构包括至少一个具有长度和增益区的光放大器。 所述至少一个光放大器表现出净相位失配,其沿其长度的至少一部分变化,其被选择为在其操作期间至少部分地减小增益引起的相位匹配。

    Backscatter absorption gas imaging systems and light sources therefore
    7.
    发明授权
    Backscatter absorption gas imaging systems and light sources therefore 有权
    背散射吸收气体成像系统和光源因此

    公开(公告)号:US07151787B2

    公开(公告)日:2006-12-19

    申请号:US10658906

    申请日:2003-09-10

    IPC分类号: H01S3/091

    摘要: The location of gases that are not visible to the unaided human eye can be determined using tuned light sources that spectroscopically probe the gases and cameras that can provide images corresponding to the absorption of the gases. The present invention is a light source for a backscatter absorption gas imaging (BAGI) system, and a light source incorporating the light source, that can be used to remotely detect and produce images of “invisible” gases. The inventive light source has a light producing element, an optical amplifier, and an optical parametric oscillator to generate wavelength tunable light in the IR. By using a multi-mode light source and an amplifier that operates using 915 nm pump sources, the power consumption of the light source is reduced to a level that can be operated by batteries for long periods of time. In addition, the light source is tunable over the absorption bands of many hydrocarbons, making it useful for detecting hazardous gases.

    摘要翻译: 可以使用调谐的光源来确定对肉眼不可见的气体的位置,该调谐光源光谱地探测可以提供对应于气体吸收的图像的气体和照相机。 本发明是用于后向散射吸收气体成像(BAGI)系统的光源和包含光源的光源,其可以用于远程检测和产生“不可见”气体的图像。 本发明的光源具有发光元件,光放大器和光参量振荡器,以在IR中产生波长可调光。 通过使用多模光源和使用915nm泵浦源的放大器,光源的功耗被降低到可以长时间由电池操作的水平。 此外,光源可以在许多碳氢化合物的吸收带上调节,使其可用于检测有害气体。

    Protein detection system
    8.
    发明授权
    Protein detection system 有权
    蛋白检测系统

    公开(公告)号:US07527977B1

    公开(公告)日:2009-05-05

    申请号:US11087942

    申请日:2005-03-22

    IPC分类号: B01L3/02

    摘要: The present embodiment describes a miniature, microfluidic, absorption-based sensor to detect proteins at sensitivities comparable to LIF but without the need for tagging. This instrument utilizes fiber-based evanescent-field cavity-ringdown spectroscopy, in combination with faceted prism microchannels. The combination of these techniques will increase the effective absorption path length by a factor of 103 to 104 (to ˜1-m), thereby providing unprecedented sensitivity using direct absorption. The coupling of high-sensitivity absorption with high-performance microfluidic separation will enable real-time sensing of biological agents in aqueous samples (including aerosol collector fluids) and will provide a general method with spectral fingerprint capability for detecting specific bio-agents.

    摘要翻译: 本实施例描述了一种微型,微流体,基于吸收的传感器,用于检测与LIF相当但不需要标签的灵敏度的蛋白质。 该仪器采用基于光纤的ev逝场腔衰减光谱,结合多面棱镜微通道。 这些技术的组合将使有效吸收路径长度增加103至104(至〜1-m),从而通过直接吸收提供前所未有的灵敏度。 高灵敏度吸收与高性能微流体分离的耦合将能够实时检测含水样品(包括气溶胶收集器流体)中的生物试剂,并将提供具有检测特定生物试剂的光谱指纹能力的一般方法。

    Solid-state spectrally-pure linearly-polarized pulsed fiber amplifier
laser system useful for ultraviolet radiation generation
    9.
    发明授权
    Solid-state spectrally-pure linearly-polarized pulsed fiber amplifier laser system useful for ultraviolet radiation generation 失效
    用于紫外线辐射生成的固态光谱纯线性偏振脉冲光纤放大器激光系统

    公开(公告)号:US5909306A

    公开(公告)日:1999-06-01

    申请号:US96639

    申请日:1998-06-12

    摘要: A solid-state laser source of tunable and narrow-bandwidth UV light is disclosed. The system utilizes a fiber amplifier in a resonant cavity. An acousto-optic or electro-optic modulator is incorporated into the cavity in such a way that the energy stored in the gain medium is efficiently extracted in the form of high-peak-power, short-duration pulses. In addition, narrow bandwidth and linearly polarized output are simultaneously achieved. The light from the cavity is converted into the ultraviolet by frequency tripling, quadrupling, and/or quintupling the infrared light. The narrow bandwidth, or relatively pure light, is preserved with intracavity filtering, and the high peak light powers increase the efficiency of the nonlinear crystals in the frequency conversion stage.

    摘要翻译: 公开了一种可调和窄带宽紫外光的固态激光源。 该系统在谐振腔中使用光纤放大器。 将声光或电光调制器以这样一种方式并入到腔中,使得存储在增益介质中的能量以高峰值功率,短持续时间脉冲的形式被有效地提取。 此外,同时实现窄带宽和线偏振输出。 来自空腔的光通过三倍频,四倍和/或五倍红外光转换成紫外线。 通过腔内滤波来保留窄带宽或相对纯净的光,并且高峰值光功率提高了变频阶段非线性晶体的效率。