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1. 发明授权

US06744555B2 Ultrashort-pulse source with controllable wavelength output 失效
标题翻译：具有可控波长输出的超短脉冲源
公开(公告)号：US06744555B2
公开(公告)日：2004-06-01
申请号：US09042666
申请日：1998-03-17
申请人： Almantas Galvanauskas , Mark A. Arbore , Martin M. Fejer , Donald J. Harter
发明人： Almantas Galvanauskas , Mark A. Arbore , Martin M. Fejer , Donald J. Harter
IPC分类号： G02F1365
CPC分类号： G02F1/3132 , G01B9/02007 , G01B9/02014 , G01B9/02091 , G02F1/3137 , G02F1/335 , G02F1/3532 , G02F1/395 , G02F2001/3548 , G02F2201/124 , G02F2203/26
摘要： A multiple-wavelength ultrashort-pulse laser system includes a laser generator producing ultrashort pulses at a fixed wavelength, and at least one and preferably a plurality of wavelength-conversion channels. Preferably, a fiber laser system is used for generating single-wavelength, ultrashort pulses. An optical split switch matrix directs the pulses from the laser generator into at least one of the wavelength conversion channels. An optical combining switch matrix is disposed downstream of the wavelength-conversion channels and combines outputs from separate wavelength-conversion channels into a single output channel. Preferably, waveguides formed in a ferroelectric substrate by titanium indiffusion (TI) and/or proton exchange (PE) form the wavelength-conversion channels and the splitting and combining matrices. Use of the waveguide allows efficient optical parametric generation to occur in the wavelength-conversion channels at pulse energies achievable with a mode-locked laser source. The multiple-wavelength laser system can replace a plurality of different, single-wavelength laser systems. In its simplest form, the system can be used to convert the laser wavelength to a more favorable wavelength. For example, pulses generated at 1.55 &mgr;m by a mode-locked erbium fiber laser can be converted to 1.3 &mgr;m for use in optical coherence tomography or to wavelengths suitable for use in a display, printing or machining system.
摘要翻译：多波长超短脉冲激光系统包括产生固定波长的超短脉冲的激光发生器和至少一个，优选多个波长转换通道。优选地，光纤激光系统用于产生单波长超短脉冲。光分路开关矩阵将来自激光发生器的脉冲引导到至少一个波长转换通道。光学组合开关矩阵设置在波长转换通道的下游，并将来自分离的波长转换通道的输出组合成单个输出通道。优选地，通过钛扩散（TI）和/或质子交换（PE）在铁电衬底中形成的波导形成波长转换通道和分离和组合矩阵。波导的使用允许在波长转换通道中以在锁模激光源可实现的脉冲能量下发生有效的光参量产生。多波长激光系统可以代替多个不同的单波长激光系统。在其最简单的形式中，该系统可用于将激光波长转换成更有利的波长。例如，通过模式锁定铒光纤激光器在1.55μm生成的脉冲可以转换为1.3μm，用于光学相干断层摄影或适用于显示，印刷或加工系统的波长。

2. 发明授权

US5867304A Use of aperiodic quasi-phase-matched gratings in ultrashort pulse sources 失效
标题翻译：在超短脉冲源中使用非周期准相位匹配光栅
公开(公告)号：US5867304A
公开(公告)日：1999-02-02
申请号：US845410
申请日：1997-04-25
申请人： Almantas Galvanauskas , Mark A. Arbore , Martin M. Fejer , Donald J. Harter
发明人： Almantas Galvanauskas , Mark A. Arbore , Martin M. Fejer , Donald J. Harter
IPC分类号： G02F1/37 , H01S3/00 , H01S3/23
CPC分类号： H01S3/2308 , H01S3/0057
摘要： A chirped pulse amplification system employs chirped quasi-phase-matched (QPM) gratings as dispersive delay lines for stretching and/or compressing ultrashort pulses. QPM gratings with periods varying along the beam propagation direction produce simultaneous second-harmonic generation and, in general, both amplitude and phase modulation of this second harmonic output. The aperiodic QPM gratings are designed to provide stretching or compression of the output second harmonic pulse with respect to the fundamental-wavelength input pulse. The chirped QPM gratings are also used for simultaneous harmonic generation and compressing of the chirped output from a femtosecond laser oscillator. In general, the aperiodic QPM gratings can be used to efficiently produce arbitrarily shaped second-harmonic pulses.
摘要翻译：啁啾脉冲放大系统采用啁啾准相位匹配（QPM）光栅作为扩展和/或压缩超短脉冲的色散延迟线。具有沿波束传播方向变化的周期的QPM光栅产生同时的二次谐波产生，并且通常都是该二次谐波输出的幅度和相位调制。非周期QPM光栅被设计成相对于基波长输入脉冲提供输出二次谐波脉冲的拉伸或压缩。啁啾QPM光栅还用于同时谐波产生和压缩来自飞秒激光振荡器的啁啾输出。通常，非周期QPM光栅可用于有效地产生任意形状的二次谐波脉冲。

3. 发明授权

US5815307A Aperiodic quasi-phasematching gratings for chirp adjustments and frequency conversion of ultra-short pulses 失效
标题翻译：用于啁啾调节和超短脉冲频率转换的非周期准准同步光栅
公开(公告)号：US5815307A
公开(公告)日：1998-09-29
申请号：US824032
申请日：1997-03-26
申请人： Mark A. Arbore , Martin M. Fejer
发明人： Mark A. Arbore , Martin M. Fejer
IPC分类号： G02F1/35 , G02F1/37 , H01S3/00 , G02B5/18
CPC分类号： G02F1/3544 , H01S3/0057 , G02F1/37 , G02F2001/3548 , G02F2203/25 , G02F2203/26
摘要： An apparatus and method for simultaneous chirp adjustment and frequency conversion of an ultra-short input optical pulse A.sub.1 characterized by a center angular frequency .omega..sub.1,0 in a non-linear optical material with a quasi-phasematching (QPM) grating exhibiting an aperiodic pattern of regions D.sub.j constituting a grating. Passing the ultra-short input optical pulse A.sub.1 through the grating gives rise to a chirp-adjusted and frequency-converted output optical pulse A.sub.2. In the preferred embodiment the non-linear optical material is a Second Harmonic Generator (SHG) such that the output optical pulse A.sub.2 generated from the input optical pulse A.sub.1 is a chirp-adjusted second harmonic of said ultra-short input optical pulse A.sub.1. In the general case the method and apparatus use a transfer function D(.OMEGA.) derived from the equation: A.sub.2 (.OMEGA.)=D(.OMEGA.).multidot.A.sub.1.sup.2 (.OMEGA.), where A.sub.1.sup.2 (.OMEGA.) is the Fourier transform of the square of input optical pulse A.sub.1 and A.sub.2 (.OMEGA.) is the Fourier transform of output optical pulse A.sub.2, to engineer gratings for frequency-conversion and chirp-adjustment.
摘要翻译：一种在非线性光学材料中具有中心角频率ω1,0的特征的超短输入光脉冲A1的同步啁啾调节和频率转换的装置和方法，其具有呈非周期性模式的准正交匹配（QPM）光栅的区域Dj构成光栅。通过光栅传递超短输入光脉冲A1产生啁啾调节和频率转换的输出光脉冲A2。在优选实施例中，非线性光学材料是第二谐波发生器（SHG），使得从输入光脉冲A1产生的输出光脉冲A2是所述超短输入光脉冲A1的啁啾调节二次谐波。在一般情况下，方法和装置使用从以下等式导出的传递函数+ E，Cir D + EE（OMEGA）：+ E，cir A + EE 2（OMEGA）= + E，cir D + EE（OMEGA）xA + E，cir 12 + EE（OMEGA），其中A + E，cir 12 + EE（OMEGA）是输入光脉冲A1和+ E的平方的傅里叶变换，cir A + EE 2（OMEGA）是傅立叶转换输出光脉冲A2，工程光栅进行变频和啁啾调节。

4. 发明授权

US07339718B1 Generation of terahertz radiation in orientation-patterned semiconductors 有权
标题翻译：在定向图案化的半导体中产生太赫兹辐射
公开(公告)号：US07339718B1
公开(公告)日：2008-03-04
申请号：US11357722
申请日：2006-02-17
申请人： Konstantin L. Vodopyanov , Yun-Shik Lee , Vladimir G. Kozlov , Martin M. Fejer
发明人： Konstantin L. Vodopyanov , Yun-Shik Lee , Vladimir G. Kozlov , Martin M. Fejer
IPC分类号： G02F1/35 , G02F2/02
CPC分类号： G02F1/39 , G02F1/3558 , G02F2203/13
摘要： A method for generating THz radiation comprises illuminating a semiconductor crystal with an optical pulse train. The semiconductor crystal comprises alternating parallel crystal domains, with each domain having a crystal orientation inverted with respect to adjacent domains. The optical pulse train propagates substantially perpendicularly relative to domain boundaries in the semiconductor crystal. The THz radiation is generated from the optical pulse train by optical down-conversion mediated by the semiconductor crystal. Optical path lengths through the crystal domains at least in part determine a frequency of the generated THz radiation. THz generation efficiency may be enhanced by placing the semiconductor crystal within an external resonant cavity, by placing the semiconductor crystal within a laser cavity, or by placing the semiconductor crystal within an OPO cavity. The semiconductor crystal may comprise zinc-blende, III-V, or II-VI semiconductor.
摘要翻译：用于产生太赫兹辐射的方法包括用光脉冲串照射半导体晶体。半导体晶体包括交替的平行晶体畴，每个畴具有相对于相邻畴反转的晶体取向。光脉冲串相对于半导体晶体中的畴边界基本垂直地传播。通过由半导体晶体介导的光学下变频从光脉冲串产生太赫兹辐射。通过晶体域的光路长度至少部分地确定所产生的太赫兹辐射的频率。通过将半导体晶体放置在激光腔内，或通过将半导体晶体放置在OPO腔内，可以将半导体晶体放置在外部谐振腔内来提高太赫兹发生效率。半导体晶体可以包括闪锌矿，III-V或II-VI半导体。

5. 发明授权

US06930821B2 Nonlinear frequency mixer using quasi-phase-matching gratings having beam-modifying patterns 失效
标题翻译：使用具有光束修改图案的准相位匹配光栅的非线性混频器
公开(公告)号：US06930821B2
公开(公告)日：2005-08-16
申请号：US10440490
申请日：2003-05-16
申请人： Jonathan R. Kurz , Martin M. Fejer
发明人： Jonathan R. Kurz , Martin M. Fejer
IPC分类号： G02F1/37 , G02F1/377 , G02F1/39
CPC分类号： G02F1/3775 , G02F2001/372
摘要： A method and a nonlinear frequency mixer employing the method to generate at least one output light from at least one input light with the aid of a quasi-phase-matching (QPM) grating for quasi-phase-matching the input and output light involved in a nonlinear frequency mixing operation such as three-wave mixing, four-wave mixing or other nonlinear operation mediated by a susceptibility of the nonlinear optical material. The QPM grating has a beam-modifying pattern with features for wave front shaping. More specifically, the features shape the wave fronts of the output light by diffraction or phase front shaping to thereby modify its propagation. This modification of propagation can be used to steer, focus, defocusing, split and/or collimate the output light. The features themselves can have various geometric shapes and sizes, even on the order of the wavelength of the output light, and they can include domains exhibiting a nonlinear optical susceptibility χ, such as the second-order susceptibility χ(2), domain edges, and/or spacings between such domains.
摘要翻译：一种采用该方法的方法和非线性频率混合器，用于借助于准相位匹配（QPM）光栅从至少一个输入光产生至少一个输出光，以准相相匹配参与的输入和输出光由非线性光学材料的磁化率介导的三波混频，四波混频或其他非线性运算的非线性频率混合操作。 QPM光栅具有波束修正图案，具有用于波前成形的特征。更具体地，这些特征通过衍射或相位前置成形来形成输出光的波前，从而改变其传播。传播的这种修改可用于引导，聚焦，散焦，分离和/或校准输出光。特征本身可以具有各种几何形状和尺寸，即使在输出光的波长的数量级上，它们也可以包括显示出非线性光学敏感性chi的畴，例如二次磁化率chi（2） / SUP>，域边缘和/或这些域之间的间隔。

6. 发明授权

US06906855B2 Method of amplifying optical signals using doped materials with extremely broad bandwidths 失效
标题翻译：使用具有极宽带宽的掺杂材料放大光信号的方法
公开(公告)号：US06906855B2
公开(公告)日：2005-06-14
申请号：US10885424
申请日：2004-07-06
申请人： Yannick G. Feillens , Michel J. F. Digonnet , Martin M. Fejer
发明人： Yannick G. Feillens , Michel J. F. Digonnet , Martin M. Fejer
IPC分类号： H01S3/067 , H01S3/094 , H01S3/16 , H01S3/00
CPC分类号： H01S3/06754 , H01S3/06766 , H01S3/0677 , H01S3/094011 , H01S3/094096 , H01S3/1608 , H01S3/1643
摘要： In a method of amplifying optical input signals over a wide bandwidth, the optical input signals are applied to an optical waveguide made from a rare-earth-doped amorphous material (e.g., erbium-doped SrY4(SiO4)3O material). The optical input signals include optical signals having wavelengths over a range of approximately 125 nanometers. Pump light is applied to the optical waveguide to cause the waveguide to provide optical gain to the optical input signals. The optical gain causes the optical signals to be amplified within the waveguide to provide amplified optical signals over approximately a 125-nanometer range, including, in particular, optical signals having wavelengths at one end of the range and optical signals having wavelengths at a second end of the range.
摘要翻译：在宽带宽放大光输入信号的方法中，光输入信号被施加到由稀土掺杂的非晶材料制成的光波导（例如掺杂铒的SrY 4（SiO 3 O 3）O 3）。光输入信号包括波长在大约125纳米范围内的光信号。泵浦光被施加到光波导以使波导对光输入信号提供光增益。光学增益使得光信号在波导内被放大，以在大约125纳米范围内提供放大的光信号，特别是包括在该范围的一端具有波长的光信号和在第二端具有波长的光信号的范围。

7. 发明授权

US5800767A Electric field domain patterning 失效
标题翻译：电场域图案化
公开(公告)号：US5800767A
公开(公告)日：1998-09-01
申请号：US307867
申请日：1994-09-16
申请人： Robert L. Byer , Martin M. Fejer , Gregory D. Miller , Lawrence E. Myers
发明人： Robert L. Byer , Martin M. Fejer , Gregory D. Miller , Lawrence E. Myers
IPC分类号： G02F1/355 , B29C71/00
CPC分类号： G02F1/3558
摘要： A method of domain patterning a body of ferroelectric material. The method includes the steps of adhering spaced conducting strips to a surface of said body; covering portions of said surface of said body between said strips with material which is insulative relative to electric current produced when an electric field configuration is created in said body and which controls the formation of fringe electric field components in said material; and applying potentials simultaneously to said conducting strips and to a surface of said insulative material to create an electric field configuration in said body whereby said strips define said electric field configuration within said body and wherein said insulating material between said strips defines a potential within said body which is generally the same as the potential applied to said conducting strips.
摘要翻译：铁电材料体的域图案化方法。该方法包括将间隔开的导电条粘合到所述主体的表面上的步骤; 在所述条带之间覆盖所述主体的所述表面的部分，所述材料相对于在所述主体中产生电场结构而产生的电流是绝缘的，并且控制所述材料中的边缘电场分量的形成; 以及将电位同时施加到所述导电条和所述绝缘材料的表面以在所述主体中产生电场结构，由此所述条限定所述主体内的所述电场结构，并且其中所述条之间的所述绝缘材料限定所述主体内的电位其通常与施加到所述导电条上的电位相同。

8. 发明授权

US5095518A Integrated optical waveguide utilizing zinc oxide diffused into congruent and magnesium oxide doped lithium niobate crystals 失效
标题翻译：使用氧化锌的集成光波导扩散到掺杂铌酸锂的铌酸锂晶体中
公开(公告)号：US5095518A
公开(公告)日：1992-03-10
申请号：US566153
申请日：1990-08-10
申请人： Whu-ming Young , Martin M. Fejer , Robert S. Feigelson , Michel J. F. Digonnet
发明人： Whu-ming Young , Martin M. Fejer , Robert S. Feigelson , Michel J. F. Digonnet
IPC分类号： G02B6/134
CPC分类号： G02B6/1342
摘要： An integrated optical waveguide is constructed from a lithium niobate (LiNbO.sub.3) crystal substrate. In preferred embodiments, a diffused layer is formed proximate to one surface of the substrate by sputtering a thin layer of a zinc-related oxide (e.g., ZnO, ZnLiNbO.sub.4, or the like) onto the surface and then annealing the substrate. The resulting concentration of zinc in the diffused layer forms a waveguide having desirable optical propagation characteristics. The substrate is preferably congruent lithium niobate. In particularly preferred embodiments, the substrate is magnesium oxide (MgO) doped lithium niobate.
摘要翻译：集成光波导由铌酸锂（LiNbO 3）晶体基板构成。在优选实施例中，通过将锌相关氧化物（例如ZnO，ZnLiNbO 4等）的薄层溅射到表面上，然后对衬底进行退火，在衬底的一个表面附近形成扩散层。所得到的扩散层中锌的浓度形成具有理想的光传播特性的波导。所述底物优选是一致的铌酸锂。在特别优选的实施方式中，衬底是掺杂了氧化镁（MgO）的铌酸锂。

9. 发明授权

US06781750B2 Method of amplifying optical signals using doped materials with extremely broad bandwidths 有权
标题翻译：使用具有极宽带宽的掺杂材料放大光信号的方法
公开(公告)号：US06781750B2
公开(公告)日：2004-08-24
申请号：US10282139
申请日：2002-10-25
申请人： Yannick G. Feillens , Michel J. F. Digonnet , Martin M. Fejer
发明人： Yannick G. Feillens , Michel J. F. Digonnet , Martin M. Fejer
IPC分类号： H01S317
CPC分类号： H01S3/06754 , H01S3/06766 , H01S3/0677 , H01S3/094011 , H01S3/094096 , H01S3/1608 , H01S3/1643
摘要： In a method of amplifying optical input signals over a wide bandwidth, the optical input signals are applied to an optical waveguide made from a rare-earth-doped amorphous material (e.g., erbium-doped yttrium aluminum oxide material). The optical input signals include optical signals having wavelengths over a range of at least 80 nanometers, and, preferably, over a range of at least 160 nanometers. Pump light is applied to the optical waveguide to cause the waveguide to provide optical gain to the optical input signals. The optical gain causes the optical signals to be amplified within the waveguide to provide amplified optical signals over the extended 80-160-nanometer range, including, in particular, optical signals having wavelengths at one end of the range and optical signals having wavelengths at a second end or the range.
摘要翻译：在宽带宽放大光输入信号的方法中，光输入信号被施加到由稀土掺杂非晶材料（例如掺铒氧化铝材料）制成的光波导。光输入信号包括具有至少80纳米范围内的波长的光信号，并且优选在至少160纳米的范围内。泵浦光被施加到光波导以使波导对光输入信号提供光增益。光学增益使得光信号在波导内被放大，以在扩展的80-160纳米范围内提供放大的光信号，特别是包括在该范围的一端具有波长的光信号，第二端或范围。

10. 发明授权

US06721093B2 Method of amplifying optical signals using doped materials with extremely broad bandwidths 有权
公开(公告)号：US06721093B2
公开(公告)日：2004-04-13
申请号：US10282155
申请日：2002-10-25
申请人： Yannick G. Feillens , Michel J. F. Digonnet , Martin M. Fejer
发明人： Yannick G. Feillens , Michel J. F. Digonnet , Martin M. Fejer
IPC分类号： H01S317
CPC分类号： H01S3/06754 , H01S3/06766 , H01S3/0677 , H01S3/094011 , H01S3/094096 , H01S3/1608 , H01S3/1643
摘要： In a method of amplifying optical input signals over a wide bandwidth, the optical input signals are applied to an optical waveguide made from a rare-earth-doped amorphous material (e.g., erbium-doped yttrium aluminum oxide material). The optical input signals include optical signals having wavelengths over a range of at least 80 nanometers, and, preferably, over a range of at least 160 nanometers. Pump light is applied to the optical waveguide to cause the waveguide to provide optical gain to the optical input signals. The optical gain causes the optical signals to be amplified within the waveguide to provide amplified optical signals over the extended 80-160-nanometer range, including, in particular, optical signals having wavelengths at one end of the range and optical signals having wavelengths at a second end or the range.

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