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    • 12. 发明申请
    • Light source device, projector device, monitor device, and lighting device
    • 光源装置,投影仪装置,监视装置及照明装置
    • US20080165815A1
    • 2008-07-10
    • US12003843
    • 2008-01-02
    • Shunji Kamijima
    • Shunji Kamijima
    • H01S3/04
    • H04N9/3161G02F2001/3546G02F2203/60H01S3/109H01S5/0617H01S5/06804H01S5/14H04N9/3129
    • The controller 170 controls the output power of the semiconductor laser device 100a depending on the temperature of the semiconductor laser device 100a acquired by the temperature sensor 130. The controller 170 references the correspondence table 510 when the sensor temperature Ts is obtained, obtains the output power PWs corresponding to the sensor temperature Ts, and controls the power supply driving circuit 150a so that the output power per unit time of the semiconductor laser device 100a will be the output power PWs. Thus increase in temperature of the semiconductor laser device is able to be prevented through reducing the output power by controlling the amount of power supplied to the semiconductor laser device. As a result, it is possible to prevent reductions in the service life of the semiconductor laser device, even when there is a failure in a cooling device that cools the semiconductor laser device, and even when the device is used in a high temperature environment not envisioned at the time of manufacturing.
    • 控制器170根据由温度传感器130获取的半导体激光器件100a的温度来控制半导体激光器件100a的输出功率。 当获得传感器温度Ts时,控制器170参考对应表510,获得与传感器温度Ts相对应的输出功率PW,并且控制电源驱动电路150a,使得半导体激光器件的每单位时间的输出功率 100 a将输出功率PW。 因此,能够通过控制提供给半导体激光装置的功率量来降低输出功率,能够防止半导体激光装置的温度上升。 结果,即使当冷却半导体激光装置的冷却装置出现故障时,也可以防止半导体激光装置的使用寿命的降低,即使在高温环境下使用装置也不会 设想在制造时。
    • 14. 发明授权
    • Laser wavelength converter
    • 激光波长转换器
    • US06744547B2
    • 2004-06-01
    • US09926785
    • 2001-12-19
    • Naoaki IkedaTakashi AkabaOsamu NodaSusumu MikiYuichi Ohtani
    • Naoaki IkedaTakashi AkabaOsamu NodaSusumu MikiYuichi Ohtani
    • G02F101
    • G02F1/3501G02F1/37G02F2001/3505G02F2001/3546
    • A nonlinear optical crystal device, a wavelength conversion element, is surrounded with a heat sink having cooling fins. Cartridge heaters for uniformly heating the nonlinear optical crystal device are arranged in the heat sink, and the temperature of the cartridge heater is regulated by a heater controller. Laser light is input into the nonlinear optical crystal device, and delivered therefrom after its wavelength is converted into a shortened wavelength. When the repetition frequency of laser light is high, heating by the heaters is stopped, and cooling is effected with the heat sink. When the repetition frequency of laser light is low, heating by the heaters is carried out to maintain the temperature of the nonlinear optical crystal device to be a temperature at which a conversion efficiency is satisfactory.
    • 非线性光学晶体装置波长转换元件被具有散热片的散热片包围。 用于均匀加热非线性光学晶体装置的筒式加热器布置在散热器中,并且盒式加热器的温度由加热器控制器调节。 激光被输入到非线性光学晶体装置中,并且在其波长被转换成缩短波长之后被输送。 当激光的重复频率高时,停止加热器的加热,并利用散热器进行冷却。 当激光的重复频率低时,进行加热器的加热,以使非线性光学晶体装置的温度保持在转换效率令人满意的温度。
    • 15. 发明授权
    • Frequency conversion system
    • 变频系统
    • US06304585B1
    • 2001-10-16
    • US09734862
    • 2000-12-11
    • Steven SandersRobert J. Lang
    • Steven SandersRobert J. Lang
    • H01S310
    • G02F1/3534G02F1/3558G02F1/39G02F2001/3542G02F2001/3546G02F2001/3548
    • Laser diode pumped mid-IR wavelength sources include at least one high power, near-IR wavelength, injection and/or sources wherein one or both of such sources may be tunable providing a pump wave output beam to a quasi-phase matched (QPM) nonlinear frequency mixing (NFM) device. The NFM device may be a difference frequency mixing (DFM) device or an optical parametric oscillation (OPO) device. Wavelength tuning of at least one of the sources advantageously provides the ability for optimizing pump or injection wavelengths to match the QPM properties of the NFM device enabling a broad range of mid-IR wavelength selectivity. Also, pump powers are gain enhanced by the addition of a rare earth amplifier or oscillator, or a Raman/Brillouin amplifier or oscillator between the high power source and the NFM device. Further, polarization conversion using Raman or Brillouin wavelength shifting is provided to optimize frequency conversion efficiency in the NFM device.
    • 激光二极管泵浦中红外波长源包括至少一个高功率,近红外波长,注入和/或源,其中这些源中的一个或两个可以是可调谐的,以将泵浦波输出波束提供给准相位匹配(QPM) 非线性频率混合(NFM)装置。 NFM装置可以是差分混频(DFM)装置或光参量振荡(OPO)装置。 至少一个源的波长调谐有利地提供了优化泵浦或注入波长以匹配NFM器件的QPM特性的能力,从而实现宽范围的中红外波长选择性。 此外,通过在高功率源和NFM器件之间添加稀土放大器或振荡器或拉曼/布里渊放大器或振荡器来增加泵浦功率。 此外,提供使用拉曼或布里渊波长移位的偏振转换以优化NFM器件中的频率转换效率。
    • 16. 发明授权
    • Nonlinear optical wavelength converting device
    • 非线性光波长转换装置
    • US6137624A
    • 2000-10-24
    • US683739
    • 1996-09-09
    • Yoichi Taira
    • Yoichi Taira
    • G02F1/01G02F1/35G02F1/355G02F1/37H01L31/14H01S3/109
    • G02F1/37G02F2001/3546
    • The present invention is a wavelength converting device comprising a plurality of nonlinear optical crystals for transmitting light by second harmonic generation. Each crystal piece has a crystal axis respectively and is positioned with the crystal angle satisfying a phase matching condition for second harmonic generation and so that the adjacent crystal axis is oriented in a crystallographically different way. In one embodiment, the acceptance angle .phi. in the insensitive direction becomes the same as the acceptance angle .theta. in the sensitive direction. Therefore, there is no need for gathering light to an oval shape, and maximum conversion efficiency can be obtained by gathering light with a conventional spherical lens.
    • 本发明是一种波长转换装置,包括用于通过二次谐波发生来发射光的多个非线性光学晶体。 每个晶片分别具有晶轴,并且其晶体角度被定位成满足用于二次谐波产生的相位匹配条件,并且使得相邻晶体轴以晶体学上不同的方式取向。 在一个实施例中,不敏感方向上的接受角度phi与敏感方向上的接受角度θ相同。 因此,不需要将光聚集成椭圆形,并且通过用常规的球面透镜聚光可以获得最大的转换效率。
    • 17. 发明授权
    • Diode pumped laser with frequency conversion into UV and DUV range
    • 二极管泵浦激光器具有频率转换为UV和DUV范围
    • US6002697A
    • 1999-12-14
    • US139214
    • 1998-08-24
    • Sergei V. GovorkovUwe StammWolfgang V. ZschockaThomas Schroder
    • Sergei V. GovorkovUwe StammWolfgang V. ZschockaThomas Schroder
    • G02F1/35G02F1/37H01S3/04
    • G02F1/3501G02F1/37G02F2001/3505G02F2001/354G02F2001/3546H01S3/11H01S3/1603H01S3/1643
    • A solid state laser is provided including a rare earth-doped YAG, YLF, YVO, GSGG, YALO or GdVO oscillator crystal, at least one laser diode pumping source, a Q-switch short pulse generator, a frequency doubling stage and frequency quadrupling or quintupling stages. The frequency quadrupling or quintupling stages include a nonlinear optical crystal such as CLBO, BBO or LBO built into a housing. The housing is sealed off to prevent external moisture and other atmospheric impurities from accessing the crystal at its interior. The housing interior is configured for purging with one or more external inert gases or dry air through valve controls. The housing is equipped with a mechanism for controlling the temperature of the interior of the housing, and consequently for controlling the temperature of the crystal. The temperature controlling mechanism enables heating and cooling of the crystal, as well as maintaining the crystal at a constant selected temperature. The housing includes optical windows transparent for input and output radiation.
    • 提供固体激光器,其包括稀土掺杂YAG,YLF,YVO,GSGG,YALO或GdVO振荡晶体,至少一个激光二极管泵浦源,Q开关短脉冲发生器,倍频级和倍频四倍或 五倍的阶段 频率四倍或五倍级包括内置在外壳中的非线性光学晶体,例如CLBO,BBO或LBO。 外壳被密封以防止外部水分和其他大气杂质进入其内部的水晶。 外壳内部配置为通过一个或多个外部惰性气体或干燥空气通过阀门控制进行清洗。 壳体配备有用于控制壳体内部的温度的机构,并且因此用于控制晶体的温度。 温度控制机构能够对晶体进行加热和冷却,并且将晶体保持在恒定的选定温度。 外壳包括透明的输入和输出辐射的光学窗口。
    • 18. 发明授权
    • Tunable optical parametric oscillator
    • 可调光参量振荡器
    • US5999547A
    • 1999-12-07
    • US17964
    • 1998-02-02
    • Klaus SchneiderStephan SchillerJurgen MlynekPatrick Kramper
    • Klaus SchneiderStephan SchillerJurgen MlynekPatrick Kramper
    • G02F1/35G02F1/39H01S3/108
    • G02F1/39G02F2001/3546
    • An optical parameter oscillator system is proposed for use in a continuous wave pump laser system having a single-frequency pump source. The system comprises a single-resonance resonator having a nonlinear medium to produce a first and second parametrically generated wave in response to the pump wave from the single-frequency pump source. The system includes means for controlling the cavity length of the resonator, means for controlling the pump frequency of the pump source and means for controlling the temperature of the nonlinear medium. The system provides for a reliable singly-resonant optical parametric oscillator capable of emitting laser light with high spectral purity and frequency stability over a wide spectral range and is resistant to mode hopping.
    • 提出了一种用于具有单频泵浦源的连续波泵激光系统中的光参数振荡器系统。 该系统包括具有非线性介质的单谐振谐振器,以响应于来自单频泵浦源的泵浦波而产生第一和第二参数产生的波。 该系统包括用于控制谐振器的腔体长度的装置,用于控制泵浦源的泵浦频率的装置和用于控制非线性介质的温度的装置。 该系统提供了一种可靠的单谐振光学参量振荡器,能够在宽光谱范围内发射具有高光谱纯度和频率稳定性的激光,并且能够抵抗模式跳变。
    • 19. 发明授权
    • Nonlinear optical device including poled waveguide and associated
fabrication methods
    • 非线性光学器件包括极化波导和相关制造方法
    • US5943464A
    • 1999-08-24
    • US796946
    • 1997-02-07
    • Salah Khodja
    • Salah Khodja
    • G02B6/13G02B6/42G02F1/065G02F1/35G02F1/355G02F1/377G02B6/26
    • G02F1/065G02B6/13G02B6/424G02B6/4266G02B6/4274G02B6/4287G02F1/3558G02F1/3775G02F2001/3546
    • A nonlinear optical device includes a waveguide adjacent a substrate. The waveguide is preferably formed of a polymer or other matrix material that contains chromophores having different dipole moment directions when in respective different energy states. The chromophores may be poled to have alternating first and second dipole moment directions thereby defining corresponding alternately poled waveguide portions. Accordingly, quasi-phase matching in the waveguide may be readily achieved for application in optical frequency conversion, for example. The chromophores preferably exhibit relatively high second-order nonlinearity and may be poled to have opposite first and second dipole moment directions. A method aspect of the invention is for making nonlinear optical devices and may include the steps of: forming a waveguide comprising a matrix material containing chromophores having different dipole moment directions when in different energy states; and poling the chromophores to have alternating first and second dipole moment directions thereby defining corresponding alternately poled waveguide portions. The chromophores may be poled by a patterned mask or by alternating light and dark bands formed by an interference pattern between two laser beams.
    • 非线性光学器件包括邻近衬底的波导。 波导优选地由聚合物或其它基质材料形成,其在各自的不同能量状态下含有具有不同偶极矩方向的发色团。 发色团可以被极化以具有交替的第一和第二偶极矩方向,从而限定相应的交替极化的波导部分。 因此,例如,可以容易地实现波导中的准相位匹配用于光频率转换。 发色团优选表现出相对高的二阶非线性,并且可以极化以具有相反的第一和第二偶极矩方向。 本发明的方法是用于制造非线性光学器件,并且可以包括以下步骤:在不同的能量状态下形成包含具有不同偶极矩方向的发色团的基质材料的波导; 并且将发色团极化以具有交替的第一和第二偶极矩方向,从而限定相应的交替极化的波导部分。 发色团可以由图案化的掩模或由两个激光束之间的干涉图形形成的交替的光和暗带进行极化。