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公开(公告)号：US07630416B2
公开(公告)日：2009-12-08
申请号：US11425840
申请日：2006-06-22
Applicant: Kyung Han Hong , Tae Jun Yu , Do Kyeong Ko , Jong Min Lee
Inventor： Kyung Han Hong , Tae Jun Yu , Do Kyeong Ko , Jong Min Lee
IPC: H01S3/117
CPC classification number: H01S3/0057 , H01S3/094 , H01S3/1625 , H01S3/1636 , H01S3/235
Abstract: Provided is a high-repetition-rate femtosecond regenerative amplification system. The regenerative amplification system includes: a laser oscillator emitting pulses; a stretcher stretching the pulses with negative dispersion; a regenerative amplifier amplifying the pulses, the regenerative amplifier comprising an acousto-optic modulator for pulse switching, a pulsed pump laser for pumping a gain medium, a resonator for reciprocating the pulses between a plurality of mirrors, and at least one chirped mirror for providing negative dispersion; and a glass compressor compressing the pulses. Accordingly, the 100 kHz-class high-repetition-rate femtosecond regenerative amplification system can produce an output energy of tens of μJ, higher than a few μJ provided by a conventional system.
Abstract translation: 提供了一种高重复率飞秒再生放大系统。 再生放大系统包括：发射脉冲的激光振荡器; 担架用负色散拉伸脉冲; 放大脉冲的再生放大器，再生放大器包括用于脉冲切换的声光调制器，用于泵浦增益介质的脉冲泵浦激光器，用于使多个反射镜之间的脉冲往复运动的谐振器和至少一个啁啾反射镜，用于提供 负分散; 和压缩脉冲的玻璃压缩机。 因此，100kHz级的高重复率飞秒再生放大系统可以产生几十μJ的输出能量，高于常规系统提供的几个μJ的输出能量。
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公开(公告)号：US20090201952A1
公开(公告)日：2009-08-13
申请号：US12029919
申请日：2008-02-12
Applicant: Ningyi Luo , Sheng-Bai Zhu
Inventor： Ningyi Luo , Sheng-Bai Zhu
IPC: H01S3/10
CPC classification number: H01S3/10092 , H01S3/0092 , H01S3/0404 , H01S3/0407 , H01S3/061 , H01S3/0933 , H01S3/094057 , H01S3/094084 , H01S3/0941 , H01S3/1625 , H01S3/1636 , H01S3/168 , H01S5/0622
Abstract: An all-solid-state laser system produces coherent DUV radiation through a third or fourth harmonic generation. The fundamental wavelength is generated by a slave laser optically pumped by one or more light source(s) of high density array(s) and is stabilized by injecting optical seeds whose wavelength is rapidly swept to cover the fundamental wavelength. The pump effects are enhanced by a pump chamber that recycles unabsorbed pump light. The present invention enables DUV pulses with a width shorter than 1 ns and a repetition rate higher than 100 kHz. The output DUV wavelength is adjustable by selecting an appropriate seeder.
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33.发明申请
公开(公告)号：US20090067458A1
公开(公告)日：2009-03-12
申请号：US12176177
申请日：2008-07-18
Applicant: Na Ji , Eric Betzig
Inventor： Na Ji , Eric Betzig
CPC classification number: H01S3/0057 , G01N21/6408 , G01N21/6458 , G01N2021/653 , G01N2021/656 , H01S3/025 , H01S3/1625 , H01S3/1636
Abstract: An apparatus includes a pulsed laser source that produces a pulsed laser beam at an input repetition rate and an input pulse power, a passive pulse splitter that receives the pulsed laser beam and outputs a signal including a plurality of sub-pulses for each input pulse of the pulsed laser beam, a sample, and a detector. The output signal has a repetition rate that is greater than the input repetition rate and the powers of each of the sub-pulses are less than the input pulse power. The sample is placed in the path of a sample beam that is formed from the beam that exits the pulse splitter. The detector receives a signal of interest emitted from the sample.
Abstract translation: 一种装置包括脉冲激光源，其以输入重复频率和输入脉冲功率产生脉冲激光束;无源脉冲分离器，其接收脉冲激光束并输出包括用于每个输入脉冲的每个输入脉冲的多个子脉冲的信号 脉冲激光束，样品和检测器。 输出信号具有大于输入重复率的重复率，并且每个子脉冲的功率小于输入脉冲功率。 样品被放置在由离开脉冲分离器的光束形成的样品光束的路径中。 检测器接收从样品发出的感兴趣的信号。
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34.发明授权Method for optimizing output in ultrashort-pulse multipass laser amplifiers with selective use of a spectral filter 有权用于优化选择性使用光谱滤波器的超短脉冲多路径激光放大器输出的方法
公开(公告)号：US07242520B2
公开(公告)日：2007-07-10
申请号：US11501206
申请日：2006-08-08
Applicant: Sterling J. Backus , Henry C. Kapteyn
Inventor： Sterling J. Backus , Henry C. Kapteyn
IPC: H01S3/00
CPC classification number: H01S3/0057 , H01S3/005 , H01S3/0078 , H01S3/025 , H01S3/0407 , H01S3/10023 , H01S3/1625 , H01S3/1636 , H01S3/2325 , H01S2301/02 , H01S2301/04 , H04B10/25073
Abstract: A method for optimizing multipass laser amplifier output utilizes a spectral filter in early passes but not in later passes. The pulses shift position slightly for each pass through the amplifier, and the filter is placed such that early passes intersect the filter while later passes bypass it. The filter position may be adjust offline in order to adjust the number of passes in each category. The filter may be optimized for use in a cryogenic amplifier.
Abstract translation: 一种优化多通道激光放大器输出的方法是在早期通过时使用光谱滤波器，但不会在后续通过。 脉冲对于每次通过放大器的位置稍微移位，并且过滤器被放置成使得早期通过与过滤器相交，而稍后通过旁路。 过滤器位置可以离线调整，以便调整每个类别中的通过次数。 滤波器可以被优化用于低温放大器。
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35.发明申请Gain flattening filter for preserving the spectral bandwidth in cryogenic ultrashort-pulse laser amplifiers 审中-公开增益平坦滤波器，用于在低温超短脉冲激光放大器中保持光谱带宽
公开(公告)号：US20070030560A1
公开(公告)日：2007-02-08
申请号：US11501210
申请日：2006-08-08
Applicant: Sterling Backus , Henry Kapteyn
Inventor： Sterling Backus , Henry Kapteyn
CPC classification number: H01S3/0057 , H01S3/005 , H01S3/0078 , H01S3/025 , H01S3/0407 , H01S3/10023 , H01S3/1625 , H01S3/1636 , H01S3/2325 , H01S2301/02 , H01S2301/04 , H04B10/25073
Abstract: A gain flattening filter preserves very broad bandwidth, and therefore very short-duration pulses in ultrafast cryogenically-cooled laser amplifier systems, while also maintaining good overall efficiency. The filter is optimized for pulses amplified in a cryogenically cooled material.
Abstract translation: 增益平坦化滤波器保留了非常宽的带宽，因此在超快速低温冷却激光放大器系统中保持非常短的持续时间脉冲，同时还保持良好的总体效率。 该滤波器针对在低温冷却材料中放大的脉冲进行了优化。
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公开(公告)号：US20060215714A1
公开(公告)日：2006-09-28
申请号：US11170911
申请日：2005-06-29
Applicant: Ningyi Luo , Sheng-Bai Zhu , Minzheng Wo , Shaoping Lu
Inventor： Ningyi Luo , Sheng-Bai Zhu , Minzheng Wo , Shaoping Lu
CPC classification number: H01S3/10092 , H01S3/094 , H01S3/094076 , H01S3/13 , H01S3/1625 , H01S3/1636 , H01S5/0427 , H01S5/0622 , H01S2301/02
Abstract: A method for effective injection seeding is based on continuous wavelength sweeping for matching the injected seeds with one or more longitudinal mode(s) of the slave oscillator in every pump pulse. This is achieved through rapidly varying laser drive current resulted from RF modulation. Depending on the modulation parameters, the seed may be operated at quasi-CW or pulsed mode, with a narrow or broad bandwidth, for injection seeding of single longitudinal mode or multimode. The wavelength and bandwidth of the laser output can be tuned according to the needs. From pulse to pulse, the master-slave resonance may occur at different wavelengths upon cavity length fluctuations. Cavity length control via complicated feedback devices and phase locking schemes are consequently not required. The present invention also encompasses an injection seeded solid-state laser constructed in accordance with the inventive method and a novel application of RF modulated laser diode to spectral purification and producing high power Gaussian beam with narrow pulse width in a stable, reliable, and cost-effective manner.
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公开(公告)号：US06931046B1
公开(公告)日：2005-08-16
申请号：US09661653
申请日：2000-09-14
Applicant: Earl R. Ault
Inventor： Earl R. Ault
IPC: H01S3/02 , H01S3/04 , H01S3/07 , H01S3/0933 , H01S3/0941 , H01S3/16 , H01S3/20
CPC classification number: H01S3/022 , H01S3/0402 , H01S3/07 , H01S3/0933 , H01S3/0941 , H01S3/1625 , H01S3/20
Abstract: A laser having a lasing chamber and a semiconductor pumping device with trivalent titanium ions dissolved in a liquid host within the lasing chamber. Since the host is a liquid, it can be removed from the optical cavity when it becomes heated avoiding the inevitable optical distortion and birefringence common to glass and crystal hosts.
Abstract translation: 具有激光室的激光器和具有三价钛离子的半导体泵浦装置溶解在激光室内的液体主体中。 由于主体是液体，所以当它被加热时可以从光腔去除，避免玻璃和晶体主机常见的不可避免的光学变形和双折射。
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公开(公告)号：US06611643B2
公开(公告)日：2003-08-26
申请号：US09881046
申请日：2001-06-15
Applicant: Holger Birk , Rafael Storz
Inventor： Holger Birk , Rafael Storz
IPC: G02B632
CPC classification number: G02B6/02376 , B82Y20/00 , G02B6/02366 , G02B6/02371 , G02B6/1225 , G02B6/2552 , G02B21/002 , G02B21/0032 , G02B21/0056 , G02B21/0064 , G02B21/0076 , G02B21/008 , G02B21/06 , G02F1/353 , H01S3/005 , H01S3/1625 , H01S3/1636
Abstract: The invention discloses an illuminating device (1) having a laser (3) that emits a light beam (7), which is directed onto a microstructured optical element (13) that spectrally broadens the light from the laser. The laser (3) and the microstructured optical element (13) are arranged within the casing.
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39.发明授权
公开(公告)号：US06239901B1
公开(公告)日：2001-05-29
申请号：US09285872
申请日：1999-04-01
Applicant: Yasuhisa Kaneko
Inventor： Yasuhisa Kaneko
IPC: G02F135
CPC classification number: H01S3/0933 , G02F1/37 , H01L27/15 , H01L33/08 , H01S3/0092 , H01S3/025 , H01S3/0604 , H01S3/0627 , H01S3/0941 , H01S3/1623 , H01S3/1625 , H01S3/1636 , H01S5/005 , H01S5/183
Abstract: A light source constructed from a light emitting device and a light conversion device. The light-emitting device emits light of a first wavelength and includes a semiconductor device on a surface of a substrate. The light conversion device includes a portion of the substrate. The light conversion device receives the light of the first wavelength and emits light of a second wavelength different from the first wavelength. The substrate includes a crystal of a fluorescent material doped with an activator. The light emitting device is preferably a light emitting diode or a laser diode. In one embodiment of the invention, the light emitting device is constructed in a groove in the substrate such that light generated by the light emitting device enters the wall of the groove. Embodiments of the invention for generating second-harmonic light may be constructed by including a waveguide structure in the substrate and alternating polarized regions formed in the substrate perpendicular to the light propagation direction
Abstract translation: 由发光装置和光转换装置构成的光源。 发光器件发射第一波长的光并且在衬底的表面上包括半导体器件。 光转换装置包括基板的一部分。 光转换装置接收第一波长的光并且发射不同于第一波长的第二波长的光。 衬底包括掺杂有激活剂的荧光材料的晶体。 发光装置优选为发光二极管或激光二极管。 在本发明的一个实施例中，发光器件被构造在衬底中的凹槽中，使得由发光器件产生的光进入沟槽的壁。 用于产生二次谐波光的本发明的实施例可以通过在衬底中包括波导结构和在垂直于光传播方向形成在衬底中的交替偏振区域来构造
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40.发明授权Regenerative amplifier incorporating a spectral filter within the resonant cavity 失效在谐振腔内并入光谱滤波器的再生放大器
公开(公告)号：US5592327A
公开(公告)日：1997-01-07
申请号：US581045
申请日：1995-12-29
Applicant: Edward F. Gabl , David R. Walker , Yang Pang
Inventor： Edward F. Gabl , David R. Walker , Yang Pang
CPC classification number: H01S3/235 , H01S3/06754 , H01S3/1062 , H01S3/1608 , H01S3/1625
Abstract: A regenerative amplifier includes a resonant cavity having a gain medium and a spectral filter located in the cavity. A source is provided to pump the gain medium and thereby raise it to an excited state. Elements are also provided for creating laser seed pulses which are then injected into the resonant cavity, these elements preferably include in part a mode-locked oscillator having a wavelength substantially the same as that at which the gain medium can support amplification of the energy of the injected pulse. In a preferred embodiment the gain medium is Ti:Sapphire for both the amplifier and oscillator. Also, in the preferred embodiment the seed pulse from the oscillator is stretched in time by multiplicative factors sufficient to ensure that upon amplification, the seed pulse power density remains below the self-focusing threshold of the material through which the pulse is passed. The seed laser pulses are injected into the resonant cavity of the regenerative amplifier so as to provide multiple traversals of the resonant cavity and the gain medium therein, thereby amplifying the pulses. The pulse is recompressed back to some predetermined pulse width of interest to the user; for example, back to the temporal pulse width that is limited by the spectral bandwidth of the output pulse.
Abstract translation: 再生放大器包括具有增益介质的谐振腔和位于空腔中的光谱滤波器。 提供源来泵送增益介质，从而将其提高到激发状态。 还提供了用于产生激光种子脉冲的元件，然后将其注入到谐振腔中，这些元件优选地部分包括具有与增益介质可以支持放大能量的波长基本相同的波长的锁模振荡器 注入脉冲。 在优选实施例中，增益介质是用于放大器和振荡器的Ti：蓝宝石。 此外，在优选实施例中，来自振荡器的种子脉冲在时间上被乘法因子拉伸，足以确保在放大时，种子脉冲功率密度保持低于通过脉冲通过的材料的自聚焦阈值。 将种子激光脉冲注入到再生放大器的谐振腔中，以便在其中提供谐振腔和增益介质的多次遍历，从而放大脉冲。 将脉冲再次压缩回用户感兴趣的某个预定脉冲宽度; 例如，回到由输出脉冲的光谱带宽限制的时间脉冲宽度。
