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公开(公告)号：US09008132B2
公开(公告)日：2015-04-14
申请号：US13090585
申请日：2011-04-20
CPC分类号： H01S3/302 , G02F1/3532 , G02F2001/3548 , H01S3/0092 , H01S3/0675 , H01S3/06754 , H01S3/08086 , H01S3/094003 , H01S3/0941 , H01S3/09415 , H01S3/1086 , H01S3/109 , H01S3/2316
摘要： A pulsed laser system may include a Raman fiber that is configured to act as multiple wavelength Raman laser. The fiber is configured to receive a pulsed input beam from an input source and convert the input beam to an output beam having narrow band outputs at first and second frequencies v1 and v2.
摘要翻译： 脉冲激光系统可以包括被配置为用作多波长拉曼激光器的拉曼光纤。 光纤配置成从输入源接收脉冲输入光束，并将输入光束转换成具有第一和第二频率v1和v2的窄带输出的输出光束。
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公开(公告)号：US20110268140A1
公开(公告)日：2011-11-03
申请号：US13090585
申请日：2011-04-20
IPC分类号： H01S3/30
CPC分类号： H01S3/302 , G02F1/3532 , G02F2001/3548 , H01S3/0092 , H01S3/0675 , H01S3/06754 , H01S3/08086 , H01S3/094003 , H01S3/0941 , H01S3/09415 , H01S3/1086 , H01S3/109 , H01S3/2316
摘要： A pulsed laser system may include a Raman fiber that is configured to act as multiple wavelength Raman laser. The fiber is configured to receive a pulsed input beam from an input source and convert the input beam to an output beam having narrow band outputs at first and second frequencies v1 and v2.
摘要翻译： 脉冲激光系统可以包括被配置为用作多波长拉曼激光器的拉曼光纤。 光纤配置成从输入源接收脉冲输入光束，并将输入光束转换成具有第一和第二频率v1和v2的窄带输出的输出光束。
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3.发明授权公开(公告)号：US07529281B2
公开(公告)日：2009-05-05
申请号：US11456857
申请日：2006-07-11
CPC分类号： G02F1/353 , B33Y70/00 , H01S3/06754 , H01S3/2308
摘要： Control of average wavelength-converted power and/or wavelength converted pulse energy is described. One or more seed pulses may be generated and amplified with an optical amplifier to produce one or more amplified pulses. The amplified pulses may be wavelength converted to produce one or more wavelength converted pulses characterized by an average wavelength-converted power or pulse energy. Wavelength-converted power or pulse energy may be controlled by adjusting wavelength conversion efficiency without substantially changing the amplified power or pulse energy. Average wavelength-converted power may be controlled over a time scale comparable to a pulse period of the amplified pulses without adjusting an average power of the amplified pulses over the time scale comparable to a pulse period of the amplified pulses. A wavelength-converted optical system, may comprise a seed source, an optical amplifier optically coupled to the seed source, a wavelength converter optically coupled to the optical amplifier; and a controller operably coupled to the seed source and/or optical amplifier and/or wavelength converter. The controller may include logic adapted to control an average wavelength-converted power of an output of the wavelength converter over a time scale comparable to a pulse period of amplified pulses from the optical amplifier without adjusting an average power of the amplified pulses over that time scale. Alternatively, the controller logic may be adapted to control wavelength-converted pulse energy by adjusting the wavelength conversion efficiency without substantially changing the pulse energy of the amplified pulses.
摘要翻译： 描述平均波长转换功率和/或波长转换脉冲能量的控制。 可以产生一个或多个种子脉冲并用光放大器放大以产生一个或多个放大脉冲。 放大的脉冲可以被波长转换以产生一个或多个波长转换的脉冲，其特征在于平均波长转换的功率或脉冲能量。 波长转换的功率或脉冲能量可以通过调节波长转换效率来控制，而基本上不改变放大的功率或脉冲能量。 可以在与放大脉冲的脉冲周期相当的时间尺度上控制平均波长转换功率，而不调整放大脉冲在与放大脉冲的脉冲周期相当的时间尺度上的平均功率。 波长转换的光学系统可以包括种子源，光学耦合到种子源的光学放大器，光耦合到光放大器的波长转换器; 以及可操作地耦合到种子源和/或光放大器和/或波长转换器的控制器。 控制器可以包括适于在与来自光放大器的放大脉冲的脉冲周期相当的时间尺度上控制波长转换器的输出的平均波长转换功率的逻辑，而不调整在该时间尺度上的放大脉冲的平均功率 。 或者，控制器逻辑可以适于通过调节波长转换效率来控制波长转换的脉冲能量，而基本上不改变放大脉冲的脉冲能量。
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4.发明申请公开(公告)号：US20080013163A1
公开(公告)日：2008-01-17
申请号：US11456857
申请日：2006-07-11
CPC分类号： G02F1/353 , B33Y70/00 , H01S3/06754 , H01S3/2308
摘要： Control of average wavelength-converted power and/or wavelength converted pulse energy is described. One or more seed pulses may be generated and amplified with an optical amplifier to produce one or more amplified pulses. The amplified pulses may be wavelength converted to produce one or more wavelength converted pulses characterized by an average wavelength-converted power or pulse energy. Wavelength-converted power or pulse energy may be controlled by adjusting wavelength conversion efficiency without substantially changing the amplified power or pulse energy. Average wavelength-converted power may be controlled over a time scale comparable to a pulse period of the amplified pulses without adjusting an average power of the amplified pulses over the time scale comparable to a pulse period of the amplified pulses. A wavelength-converted optical system, may comprise a seed source, an optical amplifier optically coupled to the seed source, a wavelength converter optically coupled to the optical amplifier; and a controller operably coupled to the seed source and/or optical amplifier and/or wavelength converter. The controller may include logic adapted to control an average wavelength-converted power of an output of the wavelength converter over a time scale comparable to a pulse period of amplified pulses from the optical amplifier without adjusting an average power of the amplified pulses over that time scale. Alternatively, the controller logic may be adapted to control wavelength-converted pulse energy by adjusting the wavelength conversion efficiency without substantially changing the pulse energy of the amplified pulses.
摘要翻译： 描述平均波长转换功率和/或波长转换脉冲能量的控制。 可以产生一个或多个种子脉冲并用光放大器放大以产生一个或多个放大脉冲。 放大的脉冲可以被波长转换以产生一个或多个波长转换的脉冲，其特征在于平均波长转换的功率或脉冲能量。 波长转换的功率或脉冲能量可以通过调节波长转换效率来控制，而基本上不改变放大的功率或脉冲能量。 可以在与放大脉冲的脉冲周期相当的时间尺度上控制平均波长转换功率，而不调整放大脉冲在与放大脉冲的脉冲周期相当的时间尺度上的平均功率。 波长转换的光学系统可以包括种子源，光学耦合到种子源的光学放大器，光耦合到光放大器的波长转换器; 以及可操作地耦合到种子源和/或光放大器和/或波长转换器的控制器。 控制器可以包括适于在与来自光放大器的放大脉冲的脉冲周期相当的时间尺度上控制波长转换器的输出的平均波长转换功率的逻辑，而不调整在该时间尺度上的放大脉冲的平均功率 。 或者，控制器逻辑可以适于通过调节波长转换效率来控制波长转换的脉冲能量，而基本上不改变放大脉冲的脉冲能量。
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公开(公告)号：US08009705B2
公开(公告)日：2011-08-30
申请号：US11773934
申请日：2007-07-05
IPC分类号： H01S3/30
CPC分类号： H01S3/2325 , B33Y70/00 , H01S3/0057 , H01S3/0092 , H01S3/06708 , H01S3/06741 , H01S3/06758 , H01S3/1305 , H01S5/06256 , H01S5/06258 , H01S2301/03
摘要： Methods and systems for increasing the threshold for stimulated Brillouin scattering are described. A seed source may generate one or more chirped seed pulses characterized by a pulse duration τ, and a frequency chirp. The pulse duration τ may be greater than about 2 nanoseconds. A photonic crystal amplifier amplifies the seed pulses to produce one or more amplified pulses characterized by a peak power P greater than about 1 kilowatt. The pulse duration τ, frequency chirp, and the photonic crystal fiber may be selected such that a threshold for stimulated Brillouin scattering (SBS) in the photonic crystal fiber is greater than the peak power P.
摘要翻译： 描述了用于增加受激布里渊散射阈值的方法和系统。 种子源可以产生以脉冲持续时间τ和频率啁啾为特征的一个或多个啁啾种子脉冲。 脉冲持续时间τ可以大于约2纳秒。 光子晶体放大器放大种子脉冲以产生一个或多个以大于约1千瓦的峰值功率P为特征的放大脉冲。 可以选择脉冲持续时间τ，频率啁啾和光子晶体光纤，使得光子晶体光纤中受激布里渊散射（SBS）的阈值大于峰值功率P.
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6.发明授权公开(公告)号：US08422119B1
公开(公告)日：2013-04-16
申请号：US12886445
申请日：2010-09-20
CPC分类号： G02F1/35 , G02F2001/3503 , G02F2001/354 , G02F2001/372 , H01S3/0092
摘要： A nonlinear optical system may include optics, a non-linear optical crystal, and a uni-axial focusing element. The non-linear optical crystal is configured to generate an output beam from a non-linear optical interaction with an input beam. The optics are configured to image the input beam to an original input beam waist within the non-linear optical crystal, whereby the output beam has an original output beam waist. The uni-axial focusing element is optically coupled to the non-linear optical crystal. The uni-axial focusing element is configured so that the output beam has a new output beam waist at approximately the same location as the original output beam waist.
摘要翻译： 非线性光学系统可以包括光学器件，非线性光学晶体和单轴聚焦元件。 非线性光学晶体被配置为从与输入光束的非线性光学相互作用产生输出光束。 光学器件被配置为将输入光束成像到非线性光学晶体内的原始输入光束腰部，由此输出光束具有原始输出光束腰部。 单轴聚焦元件光耦合到非线性光学晶体。 单轴聚焦元件构造成使得输出光束在与原始输出光束腰部大致相同的位置处具有新的输出光束腰部。
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公开(公告)号：US20090010288A1
公开(公告)日：2009-01-08
申请号：US11773934
申请日：2007-07-05
IPC分类号： H01S3/08
CPC分类号： H01S3/2325 , B33Y70/00 , H01S3/0057 , H01S3/0092 , H01S3/06708 , H01S3/06741 , H01S3/06758 , H01S3/1305 , H01S5/06256 , H01S5/06258 , H01S2301/03
摘要： Methods and systems for increasing the threshold for stimulated Brillouin scattering are described. A seed source may generate one or more chirped seed pulses characterized by a pulse duration τ, and a frequency chirp. The pulse duration τ may be greater than about 2 nanoseconds. A photonic crystal amplifier amplifies the seed pulses to produce one or more amplified pulses characterized by a peak power P greater than about 1 kilowatt. The pulse duration τ, frequency chirp, and the photonic crystal fiber may be selected such that a threshold for stimulated Brillouin scattering (SBS) in the photonic crystal fiber is greater than the peak power P.
摘要翻译： 描述了用于增加受激布里渊散射阈值的方法和系统。 种子源可以产生以脉冲持续时间τ和频率啁啾为特征的一个或多个啁啾种子脉冲。 脉冲持续时间τ可以大于约2纳秒。 光子晶体放大器放大种子脉冲以产生一个或多个以大于约1千瓦的峰值功率P为特征的放大脉冲。 可以选择脉冲持续时间τt，频率啁啾和光子晶体光纤，使得光子晶体光纤中受激布里渊散射（SBS）的阈值大于峰值功率P.
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公开(公告)号：US06614815B1
公开(公告)日：2003-09-02
申请号：US09608442
申请日：2000-06-29
申请人： Thomas J. Kane , Gregory L. Keaton
发明人： Thomas J. Kane , Gregory L. Keaton
IPC分类号： H01S330
CPC分类号： H01S3/067 , G02F1/37 , H01S3/06716 , H01S3/0672 , H01S3/06729 , H01S3/094003 , H01S3/1611
摘要： An approach to blue light in a single, integrated system is disclosed. An oscillator generates source radiation at a wavelength near 0.91 microns and a few milliwatts of power. This power is amplified to multi-Watt levels in a Neodymium-doped cladding-pumped fiber device that has its gain suppressed at 1.05 microns. A harmonic generator frequency-doubles the output of the fiber device to produce radiation at a blue wavelength near 0.455 microns. Mirrors, gratings or other means in the fiber expel wavelengths of light at or near 1.05 microns while allowing 0.91 micron radiation to remain in the fiber. Gain at 1.05 microns may alternatively be suppressed by adjusting the refractive index profile of the fiber to eliminate bound-modes at 1.05 microns or by bending the fiber to attenuate radiation at 1.05 microns. The laser may include a high brightness pump to enhance the transition that produces 0.91 micron radiation. Short-pulse, high-peak power-oscillators may be used to facilitate operation of the harmonic generator. The blue light source may be incorporated into a three-color projection or image display system.
摘要翻译： 公开了一种单一集成系统中蓝光的方法。 振荡器产生波长接近0.91微米和几毫瓦功率的源辐射。 这种功率在钕掺杂包层泵浦光纤器件中被放大到多瓦电平，其增益被抑制在1.05微米。 谐波发生器频率使光纤器件的输出加倍，以产生接近0.455微米的蓝色波长的辐射。 光纤中的反射镜，光栅或其他方式排除或接近1.05微米的光波长，同时允许0.91微米的辐射保留在光纤中。 可以通过调节纤维的折射率分布来消除1.05微米的增益，以消除1.05微米处的结合模，或者通过弯曲纤维来衰减1.05微米的辐射。 激光器可以包括高亮度泵，以增强产生0.91微米辐射的转变。 可以使用短脉冲，高峰值功率振荡器来促进谐波发生器的操作。 蓝色光源可以结合到三色投影或图像显示系统中。
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9.发明授权公开(公告)号：US06995900B2
公开(公告)日：2006-02-07
申请号：US10348802
申请日：2003-01-21
IPC分类号： H01S3/00 , C03B37/023 , G02B6/02
CPC分类号： H01S3/06754 , H01S3/0078 , H01S3/06712 , H01S3/06729 , H01S3/1608 , H01S3/1616 , H01S2301/02
摘要： A method of producing a short-pass fiber by drawing a preform for a depressed cladding fiber at a predetermined drawing ratio. The preform has a core of refractive index n0, a depressed cladding surrounding the core and having a refractive index n1, and a secondary cladding surrounding the depressed cladding and having a refractive index n2. The core has a core cross-section and the depressed cladding has a depressed cladding cross-section that is larger than the core cross-section. The drawing ratio is determined based on the parameters of the preform measured along the axis of the preform and based on a desired minimum fundamental mode cutoff wavelength λm. The final core cross-section defines a fundamental mode cutoff wavelength λc such that λc≧λm along the axis. Then the preform is pulled by the thus-determined drawing ratio to produce the short-pass fiber. In some embodiments a test section of the fiber is pulled first before pulling the short pass fiber.
摘要翻译： 通过以预定的拉伸比拉伸用于凹陷包层纤维的预成型件来制造短路光纤的方法。 预成型件具有折射率n n的核心，围绕芯并且具有折射率n 1的折射率包层，以及包围凹陷包层的次级包层，并且具有 折射率n 2＆lt; 2＆gt ;. 芯部具有芯部横截面，并且凹陷的包层具有比芯部横截面大的凹陷的包层横截面。 拉伸比是根据预成型件沿着预成型件轴线测量的参数，并根据所需的最小基模截止波长λm确定的。 最终的核心横截面定义了基本模式截止波长λC，使得沿着轴线的λ/ C 1 /λ2 = m / m。 然后通过如此确定的拉伸比拉伸预成型件以产生短路光纤。 在一些实施例中，在拉动短路光纤之前首先拉动光纤的测试部分。
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10.发明授权公开(公告)号：US06876490B2
公开(公告)日：2005-04-05
申请号：US10386406
申请日：2003-03-10
CPC分类号： H01S3/06758 , H01S3/06712 , H01S3/06716 , H01S3/0672 , H01S3/06729 , H01S3/06766 , H01S3/0677 , H01S3/06775 , H01S3/08045 , H01S3/1608 , H01S3/1616 , H01S2301/02
摘要： A Thulium-doped silica fiber normally has its strongest gain at 1.9 microns and thus is not suitable for communication use. By engineering a W-profile or depressed cladding fiber with an appropriate index profile having a fundamental mode cut-off between 1.9 microns and the shorter wavelength of desired operation, an optical amplifier based on the W-profile Thulium-doped silica fiber operates at wavelengths shorter than conventional amplifiers, just above what is currently called the Erbium L-band. In a preferred embodiment, the cut-off wavelength is at or near 1.7 μm, eliminating longer wavelengths from the fiber. Amplifiers engineered according to the principles and techniques of the present invention can operate in the wavelength range between about 1.6 to 1.8 microns, which is particularly useful for telecommunications.
摘要翻译： 掺doped硅石纤维通常在1.9微米处具有最强的增益，因此不适于通信使用。 通过使用具有在1.9微米之间的基本模式截止和所需操作的较短波长的适当折射率分布的W轮廓或凹陷包层光纤的工程，基于W轮廓ium掺杂石英光纤的光学放大器工作在波长 比传统放大器短，就在目前所说的铒L波段之上。 在优选实施例中，截止波长为或接近1.7μm，消除了来自光纤的较长波长。 根据本发明的原理和技术设计的放大器可以在约1.6至1.8微米的波长范围内工作，这对于电信特别有用。
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