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1. 发明授权

US08665918B2 Fiber-based wavelength agile visible laser source 有权
标题翻译：基于光纤的波长敏捷可见激光源
公开(公告)号：US08665918B2
公开(公告)日：2014-03-04
申请号：US12408053
申请日：2009-03-20
申请人： Daniel Creeden , Peter A. Budni , Peter A. Ketteridge
发明人： Daniel Creeden , Peter A. Budni , Peter A. Ketteridge
IPC分类号： H01S3/10
CPC分类号： H01S3/2316 , G02F1/3558 , G02F1/37 , G02F2203/58 , H01S3/0092 , H01S3/06758 , H01S3/1618 , H01S5/4087
摘要： A system is provided for providing high power, wavelength tunable, laser radiation, the system comprising: a plurality of seeder sources, each the source of the plurality having a different seeder wavelength; a Ytterbium doped amplifier chain, receiving radiation from the plurality of seeder sources and at least one pump source; a second harmonic generator communicating with the Ytterbium doped amplifier chain, the second harmonic generator comprising converting radiation of the seeder wavelength into radiation of a second harmonic wavelength; and wherein the second harmonic generator comprises a crystal having a plurality of grating segments, wherein each grating segment converts radiation of a different wavelength.
摘要翻译：提供了一种用于提供高功率，波长可调谐的激光辐射的系统，该系统包括：多个播种机源，每个播种机源中的每一个具有不同的播种机波长; 镱掺杂放大器链，其接收来自所述多个播种源和至少一个泵浦源的辐射; 与掺镱放大器链通信的二次谐波发生器，所述二次谐波发生器包括将所述播种器波长的辐射转换为二次谐波波长的辐射; 并且其中所述二次谐波发生器包括具有多个光栅段的晶体，其中每个光栅段转换不同波长的辐射。

2. 发明授权

US07953128B2 Pump recycling scheme for terahertz generation 有权
公开(公告)号：US07953128B2
公开(公告)日：2011-05-31
申请号：US12011876
申请日：2008-01-30
申请人： Daniel Creeden , Peter A. Ketteridge
发明人： Daniel Creeden , Peter A. Ketteridge
IPC分类号： H01S3/10
CPC分类号： G02F1/39 , G02F1/3534 , G02F2201/17 , G02F2203/13
摘要： Structures and techniques are disclosed that enable efficient generation of terahertz (THz) radiation capable of surpassing the fundamental quantum limit, as defined by the Manley-Rowe relations. In one particular embodiment, a difference frequency mixing (DFM) crystal stage receives pump radiation and signal radiation, and generates THz radiation. Leftover signal radiation from the DFM stage is then used to pump an optical parametric oscillator (OPO) stage, which is used to generate another mixing signal and more THz radiation. The output signal and the residual pump from the OPO stage can then be used in a subsequent DFM process to generate even more terahertz radiation, and further drives a subsequent OPO stage. Such cascaded OPO, DFM, OPO staging can be repeated to maximize total amount of THz output power.

3. 发明申请

US20110075690A1 Pump recycling scheme for terahertz generation 有权
标题翻译：太赫兹发电的泵回收方案
公开(公告)号：US20110075690A1
公开(公告)日：2011-03-31
申请号：US12011876
申请日：2008-01-30
申请人： Daniel Creeden , Peter A. Ketteridge
发明人： Daniel Creeden , Peter A. Ketteridge
IPC分类号： H01S3/10
CPC分类号： G02F1/39 , G02F1/3534 , G02F2201/17 , G02F2203/13
摘要： Structures and techniques are disclosed that enable efficient generation of terahertz (THz) radiation capable of surpassing the fundamental quantum limit, as defined by the Manley-Rowe relations. In one particular embodiment, a difference frequency mixing (DFM) crystal stage receives pump radiation and signal radiation, and generates THz radiation. Leftover signal radiation from the DFM stage is then used to pump an optical parametric oscillator (OPO) stage, which is used to generate another mixing signal and more THz radiation. The output signal and the residual pump from the OPO stage can then be used in a subsequent DFM process to generate even more terahertz radiation, and further drives a subsequent OPO stage. Such cascaded OPO, DFM, OPO staging can be repeated to maximize total amount of THz output power.
摘要翻译：公开了能够有效地产生能够超过由Manley-Rowe关系定义的基本量子极限的太赫兹（THz）辐射的结构和技术。在一个具体实施例中，差分频率混合（DFM）晶体级接收泵浦辐射和信号辐射，并产生太赫兹辐射。然后使用来自DFM级的剩余信号辐射来泵浦光参量振荡器（OPO）级，其用于产生另一混频信号和更多的THz辐射。然后可以将来自OPO级的输出信号和剩余泵用于随后的DFM过程中，以产生更多的太赫兹辐射，并进一步驱动后续的OPO级。可以重复这种级联的OPO，DFM，OPO分段，以最大化THz输出功率的总量。

4. 发明授权

US07894128B2 Real-time terahertz imaging system for the detection of concealed objects 有权
标题翻译：实时太赫兹成像系统用于检测隐藏物体
公开(公告)号：US07894128B2
公开(公告)日：2011-02-22
申请号：US12012401
申请日：2008-02-01
申请人： John C. McCarthy , Daniel Creeden , Peter A. Ketteridge
发明人： John C. McCarthy , Daniel Creeden , Peter A. Ketteridge
IPC分类号： H04B10/17
CPC分类号： H04B10/291
摘要： A terahertz imaging system and method of use including a compact Yb-doped fiber laser-pumped ZGP crystal as a THz source and an uncooled microbolometer array as a detector. According to the present invention, semiconductor lasers are also drive current modulated to produce desired laser pulsewidth, repetition rate and wavelengths needed for DFG THz generation in various non-linear crystals. The fiber-coupled semiconductor lasers provide at least two wavelengths that will produce THz radiation by DFG in non-linear converter. These two wavelengths are combined and amplified in a single Yb fiber amplifier chain. Yb amplifier is staged in continually increasing core diameters to provide significant signal amplification while suppressing deleterious non-linear effects.
摘要翻译：一种太赫兹成像系统和使用的方法，包括紧凑型Yb掺杂光纤激光泵浦ZGP晶体作为THz源和未冷却的微热辐射计阵列作为检测器。根据本发明，半导体激光器也被驱动电流调制以产生在各种非线性晶体中DFG THz产生所需的所需激光脉冲宽度，重复率和波长。光纤耦合半导体激光器提供至少两个在非线性转换器中由DFG产生THz辐射的波长。这两个波长在单个Yb光纤放大器链中组合和放大。 Yb放大器不断增加核心直径，以提供显着的信号放大，同时抑制有害的非线性效应。

5. 发明申请

US20100238958A1 FIBER-BASED WAVELENGTH AGILE VISIBLE LASER SOURCE 有权
标题翻译：基于光纤的波长可见光激光源
公开(公告)号：US20100238958A1
公开(公告)日：2010-09-23
申请号：US12408053
申请日：2009-03-20
申请人： Daniel Creeden , Peter A. Budni , Peter A. Ketteridge
发明人： Daniel Creeden , Peter A. Budni , Peter A. Ketteridge
IPC分类号： H01S3/10
CPC分类号： H01S3/2316 , G02F1/3558 , G02F1/37 , G02F2203/58 , H01S3/0092 , H01S3/06758 , H01S3/1618 , H01S5/4087
摘要： A system is provided for providing high power, wavelength tunable, laser radiation, the system comprising: a plurality of seeder sources, each the source of the plurality having a different seeder wavelength; a Ytterbium doped amplifier chain, receiving radiation from the plurality of seeder sources and at least one pump source; a second harmonic generator communicating with the Ytterbium doped amplifier chain, the second harmonic generator comprising converting radiation of the seeder wavelength into radiation of a second harmonic wavelength; and wherein the second harmonic generator comprises a crystal having a plurality of grating segments, wherein each grating segment converts radiation of a different wavelength.
摘要翻译：提供了一种用于提供高功率，波长可调谐的激光辐射的系统，该系统包括：多个播种机源，每个播种机源中的每一个具有不同的播种机波长; 镱掺杂放大器链，其接收来自所述多个播种源和至少一个泵浦源的辐射; 与掺镱放大器链通信的二次谐波发生器，所述二次谐波发生器包括将所述播种器波长的辐射转换为二次谐波波长的辐射; 并且其中所述二次谐波发生器包括具有多个光栅段的晶体，其中每个光栅段转换不同波长的辐射。

6. 发明授权

US08373925B2 Compact photonic crystal fiber source 有权
标题翻译：紧凑型光子晶体光纤源
公开(公告)号：US08373925B2
公开(公告)日：2013-02-12
申请号：US12644088
申请日：2009-12-22
申请人： Daniel Creeden , John C. McCarthy
发明人： Daniel Creeden , John C. McCarthy
IPC分类号： H01S3/00
CPC分类号： H01S3/06708 , H01S3/06704 , H01S3/163
摘要： A system is provided for amplification of laser light, the system having: a plurality of non-silica optical fibers, each the non-silica optical fiber disposed within a sheath; each the non-silica optical fiber being doped with a dopant such that the non-silica fiber has a low non-linear effect; a light source, directing a light beam into a first the non-silica optical fiber; heat dissipating components disposed about the plurality of non-silica optical fibers forming a package; and the package being not greater than 100 cm3.
摘要翻译：提供了用于放大激光的系统，该系统具有：多个非石英光纤，每个非硅石光纤设置在护套内; 每个非二氧化硅光纤掺杂有掺杂剂，使得非二氧化硅纤维具有低的非线性效应; 将光束引导到第一非二氧化硅光纤中的光源; 布置在所述多个非二氧化硅光纤周围的散热部件形成封装; 并且包装不大于100cm 3。

7. 发明申请

US20090232462A1 Nonlinear crystal and waveguide array for generation of terahertz radiation 失效
标题翻译：用于产生太赫兹辐射的非线性晶体和波导阵列
公开(公告)号：US20090232462A1
公开(公告)日：2009-09-17
申请号：US12075767
申请日：2008-03-13
申请人： Daniel Creeden , Peter A. Ketteridge , York E. Young , Rick Thompson
发明人： Daniel Creeden , Peter A. Ketteridge , York E. Young , Rick Thompson
IPC分类号： G02B6/00
CPC分类号： G02B6/10
摘要： Techniques for generating terahertz (THz) radiation are provided in which each nonlinear crystal in an array of such crystals is coupled to one or more corresponding waveguides such that any THz radiation generated in any single crystal is coupled into that crystal's THz waveguide structure. After the THz radiation is generated in the crystals and coupled into the waveguides, the individual THz signals may be coherently combined to form a single THz signal (non-coherent configurations are provided as well). Crystal-waveguide arrays embodying the techniques can be used to implement efficient, robust, and compact THz sources suitable for applications such as security screening, medical imaging, quality control and process monitoring in manufacturing operations, and package and container inspection.
摘要翻译：提供了用于产生太赫兹（THz）辐射的技术，其中这种晶体阵列中的每个非线性晶体耦合到一个或多个相应的波导，使得在任何单晶中产生的任何THz辐射耦合到该晶体的THz波导结构中。在晶体中产生THz辐射并耦合到波导中之后，单个THz信号可以相干地组合以形成单个THz信号（也提供非相干配置）。体现这些技术的晶体波导阵列可用于实现高效，稳健，紧凑的THz源，适用于诸如安全检查，医学成像，制造操作中的质量控制和过程监控以及封装和容器检查等应用。

8. 发明授权

US07787724B2 Nonlinear crystal and waveguide array for generation of terahertz radiation 失效
标题翻译：用于产生太赫兹辐射的非线性晶体和波导阵列
公开(公告)号：US07787724B2
公开(公告)日：2010-08-31
申请号：US12075767
申请日：2008-03-13
申请人： Daniel Creeden , Peter A. Ketteridge , York E. Young , Rick Thompson
发明人： Daniel Creeden , Peter A. Ketteridge , York E. Young , Rick Thompson
IPC分类号： G02B6/26 , G02B6/42 , G02B6/10 , H01S3/10 , G02F1/35 , G02F2/02
CPC分类号： G02B6/10
摘要： Techniques for generating terahertz (THz) radiation are provided in which each nonlinear crystal in an array of such crystals is coupled to one or more corresponding waveguides such that any THz radiation generated in any single crystal is coupled into that crystal's THz waveguide structure. After the THz radiation is generated in the crystals and coupled into the waveguides, the individual THz signals may be coherently combined to form a single THz signal (non-coherent configurations are provided as well). Crystal-waveguide arrays embodying the techniques can be used to implement efficient, robust, and compact THz sources suitable for applications such as security screening, medical imaging, quality control and process monitoring in manufacturing operations, and package and container inspection.
摘要翻译：提供了用于产生太赫兹（THz）辐射的技术，其中这种晶体阵列中的每个非线性晶体耦合到一个或多个相应的波导，使得在任何单晶中产生的任何THz辐射耦合到该晶体的THz波导结构中。在晶体中产生THz辐射并耦合到波导中之后，单个THz信号可以相干地组合以形成单个THz信号（也提供非相干配置）。体现这些技术的晶体波导阵列可用于实现高效，稳健，紧凑的THz源，适用于诸如安全检查，医学成像，制造操作中的质量控制和过程监控以及封装和容器检查等应用。

9. 发明申请

US20090091820A1 Real-time terahertz imaging system for the detection of concealed objects 有权
标题翻译：实时太赫兹成像系统用于检测隐藏物体
公开(公告)号：US20090091820A1
公开(公告)日：2009-04-09
申请号：US12012401
申请日：2008-02-01
申请人： John C. McCarthy , Daniel Creeden , Peter A. Ketteridge
发明人： John C. McCarthy , Daniel Creeden , Peter A. Ketteridge
IPC分类号： H04B10/12
CPC分类号： H04B10/291
摘要： A terahertz imaging system and method of use including a compact Yb-doped fiber laser-pumped ZGP crystal as a THz source and an uncooled microbolometer array as a detector. According to the present invention, semiconductor lasers are also drive current modulated to produce desired laser pulsewidth, repetition rate and wavelengths needed for DFG THz generation in various non-linear crystals. The fiber-coupled semiconductor lasers provide at least two wavelengths that will produce THz radiation by DFG in non-linear converter. These two wavelengths are combined and amplified in a single Yb fiber amplifier chain. Yb amplifier is staged in continually increasing core diameters to provide significant signal amplification while suppressing deleterious non-linear effects.
摘要翻译：一种太赫兹成像系统和使用的方法，包括紧凑型Yb掺杂光纤激光泵浦ZGP晶体作为THz源和未冷却的微热辐射计阵列作为检测器。根据本发明，半导体激光器也被驱动电流调制以产生在各种非线性晶体中DFG THz产生所需的所需激光脉冲宽度，重复率和波长。光纤耦合半导体激光器提供至少两个在非线性转换器中由DFG产生THz辐射的波长。这两个波长在单个Yb光纤放大器链中组合和放大。 Yb放大器不断增加核心直径，以提供显着的信号放大，同时抑制有害的非线性效应。

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