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公开(公告)号：US06788726B2
公开(公告)日：2004-09-07
申请号：US10086137
申请日：2002-02-26
IPC分类号： H01S308
CPC分类号： H01S5/141 , H01S5/143 , H01S2301/02
摘要： A laser apparatus and method that provide for suppression of source spontaneous emission (SSE) and amplified spontaneous emission (ASE) light in laser output with minimal intracavity loss. The apparatus comprises a gain medium emitting a light beam, a wavelength element positioned in the light beam, and a non-reciprocal pickoff positioned in the light beam between the gain medium and wavelength element. The non-reciprocal pickoff may comprise a polarization-dependent beam splitter and a non-reciprocal polarization rotator positioned in the light beam before the wavelength selection element. The non-reciprocal pickoff may further comprise a reciprocal polarization rotator positioned in the light beam after the polarization-dependent beam splitter. The method may comprise emitting a light beam from a gain medium outward along an optical path, allowing the outward light beam to interact with a tunable element, returning a spectrally cleaned light beam along the optical path to the gain medium from the tunable element, and non-reciprocally picking off a portion of the returning, spectrally cleaned light beam from the optical path and directing the portion along an output path.
摘要翻译： 一种激光设备和方法，其以最小的腔内损失提供抑制源自发发射（SSE）和放大的自发发射（ASE）光的激光输出。 该装置包括发射光束的增益介质，位于光束中的波长元件，以及位于增益介质和波长元件之间的光束中的不可逆的拾取。 不可逆的检测可以包括位于波长选择元件之前的光束中的偏振相关分束器和不可逆偏振旋转器。 不可逆的检测可以进一步包括在偏振相关的分束器之后定位在光束中的倒数偏振旋转器。 该方法可以包括沿着光路向外发射来自增益介质的光束，允许向外的光束与可调谐元件相互作用，使光谱清洁的光束沿着光路从可调谐元件返回到增益介质，以及 不可逆地从光路中取出返回的，光谱清洁的光束的一部分，并沿着输出路径引导该部分。
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公开(公告)号：US06608847B2
公开(公告)日：2003-08-19
申请号：US09967885
申请日：2001-09-28
申请人： Guangzhi Z. Zhang , Andrew Davidson , David Robinson , Carter Hand , Mark Wippich , Murray Reed , Weizhi Wang
发明人： Guangzhi Z. Zhang , Andrew Davidson , David Robinson , Carter Hand , Mark Wippich , Murray Reed , Weizhi Wang
IPC分类号： H01S310
CPC分类号： H01S5/143 , H01S5/02284 , H01S2301/02
摘要： A laser apparatus and method with compact cavity design that provides suppression of source spontaneous emission (SSE) and amplified spontaneous emission (ASE) light with minimal loss. The laser comprises a gain medium emitting a light beam along an optical path, a tuning element positioned in the optical path and configured feed back light of a selected wavelength to the gain medium and configured to define a first output beam directed along a first output path, a partial reflector located in the optical path and positioned to create a second output beam directed along a second output path substantially parallel to the first output path; and having a spontaneous emission component that is spatially separated from the selected wavelength. The second output beam can be coupled into optical fiber and produce a coherent light source with high spectral purity and tunable wavelengths.
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公开(公告)号：US20050207454A1
公开(公告)日：2005-09-22
申请号：US10802616
申请日：2004-03-16
申请人： Andrei Starodoumov , Murray Reed
发明人： Andrei Starodoumov , Murray Reed
CPC分类号： H01S5/146 , H01S3/094003 , H01S3/094007 , H01S5/12 , H01S5/4062
摘要： A fiber laser including doped-core fiber having inner and outer cladding is optically pumped by plurality of diode-lasers. Light emitted by the diode-lasers is coupled into a single multimode optical fiber. Light from the multimode optical fiber is directed to a wavelength selective reflecting device that is partially reflective in a narrow reflection band about a peak reflection wavelength. A portion of the light having the peak reflection wavelength is reflected from the wavelength selective reflecting device back along the multimode optical fiber and back into the plurality of diode-lasers. This locks the emitting wavelength of the light emitted from each of the diode-lasers to the peak reflection wavelength. Light at the emitting wavelength that is not reflected from the wavelength selective reflective device is coupled into the inner cladding of the doped-core fiber for optically pumping the fiber laser.
摘要翻译： 包括具有内包层和外包层的掺杂芯纤维的光纤激光器被多个二极管激光器光泵浦。 由二极管激光器发出的光耦合到单个多模光纤中。 来自多模光纤的光被引导到波长选择反射装置，该波长选择反射装置围绕峰值反射波长在窄反射带中部分反射。 具有峰值反射波长的一部分光从波长选择反射装置沿着多模光纤反射并返回到多个二极管激光器中。 这将从每个二极管激光器发射的光的发射波长锁定到峰值反射波长。 在没有从波长选择反射装置反射的发射波长处的光耦合到掺杂芯光纤的内包层中，用于光纤泵浦光纤激光器。
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公开(公告)号：US20050190452A1
公开(公告)日：2005-09-01
申请号：US10790660
申请日：2004-03-01
申请人： Sergei Govorkov , Luis Spinelli , William White , Murray Reed
发明人： Sergei Govorkov , Luis Spinelli , William White , Murray Reed
CPC分类号： G02B27/106 , G02B27/143 , H01S3/0057
摘要： An optical pulse extender includes a delay loop formed by a plurality of mirrors and a graded reflectivity beamsplitter. The mirrors and the beamsplitter are configured and aligned such that a pulse to be broadened makes a predetermined number of round trips in the delay loop and is incident on a different zone of the beamsplitter after each round trip. The different zones of the beamsplitter have different reflection values and different transmission values. These values are selected such that the pulse extender delivers a plurality of temporally and spatially separated replica pulses each thereof having about the same energy. The delivered replica pulses together provide an extended pulse having a longer duration than the input pulse. The replica pulses may be passed through a beam homogenizer to spatially homogenize the temporal characteristics of the extended pulse.
摘要翻译： 光脉冲延长器包括由多个反射镜和渐变反射分束器形成的延迟环。 反射镜和分束器被配置和对准，使得待扩展的脉冲在延迟环路中进行预定数量的往返，并且在每次往返之后入射到分束器的不同区域。 分束器的不同区域具有不同的反射值和不同的透射值。 这些值被选择为使得脉冲延长器递送多个时间上和空间上分离的复制脉冲，每个复制脉冲具有大约相同的能量。 传送的副本脉冲一起提供具有比输入脉冲更长的持续时间的扩展脉冲。 复制脉冲可以通过光束均化器以空间均匀扩展脉冲的时间特性。
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公开(公告)号：US20060171036A1
公开(公告)日：2006-08-03
申请号：US11395737
申请日：2006-03-31
申请人： Sergei Govorkov , Luis Spinelli , William White , Murray Reed
发明人： Sergei Govorkov , Luis Spinelli , William White , Murray Reed
IPC分类号： G02B27/10
CPC分类号： G02B27/106 , G02B27/143 , H01S3/0057
摘要： An optical pulse extender includes a delay loop formed by a plurality of mirrors and a graded reflectivity beamsplitter. The mirrors and the beamsplitter are configured and aligned such that a pulse to be broadened makes a predetermined number of round trips in the delay loop and is incident on a different zone of the beamsplitter after each round trip. The different zones of the beamsplitter have different reflection values and different transmission values. These values are selected such that the pulse extender delivers a plurality of temporally and spatially separated replica pulses each thereof having about the same energy. The delivered replica pulses together provide an extended pulse having a longer duration than the input pulse. The replica pulses may be passed through a beam homogenizer to spatially homogenize the temporal characteristics of the extended pulse.
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公开(公告)号：US20060125969A1
公开(公告)日：2006-06-15
申请号：US11011075
申请日：2004-12-14
申请人： Juan Chilla , Sergei Govorkov , Andrea Caprara , Murray Reed , Luis Spinelli
发明人： Juan Chilla , Sergei Govorkov , Andrea Caprara , Murray Reed , Luis Spinelli
CPC分类号： H04N9/3129 , H04N9/3114 , H04N9/315
摘要： A projection video display includes a light source including an OPS-laser delivering laser radiation in multiple transverse modes (a multiple-transverse-mode OPS-laser). The display includes a spatial light modulator for spatially modulating the radiation from the multiple-transverse-mode OPS-laser in accordance with a portion of an image to be displayed. Projection optics project the spatially modulated light on a screen on which the image is to be displayed. In one example the OPS-laser is a diode-laser array pumped OPS-laser and is one of three lasers, one delivering red light, one delivering blue light, and the other delivering green light. The lasers are time modulated such that the spatial light modulator receives light from each of the lasers separately. The OPS laser is directly time modulated by periodically turning the diode-laser array on and off.
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公开(公告)号：US20060126022A1
公开(公告)日：2006-06-15
申请号：US11011736
申请日：2004-12-14
申请人： Sergei Govorkov , Luis Spinelli , Juan Chilla , Andrea Caprara , Murray Reed
发明人： Sergei Govorkov , Luis Spinelli , Juan Chilla , Andrea Caprara , Murray Reed
IPC分类号： G03B21/00
CPC分类号： G03B21/62 , G02B26/101 , G02B27/48 , G03B21/10 , G03B21/56 , H04N9/3152 , H04N9/3161
摘要： A projection video display includes at least one laser for delivering a light beam. The display includes a beam homogenizer and a condenser lens. A scanning arrangement is provided for scanning the light in beam in a particular pattern over the condenser lens in a manner that effectively increases the beam divergence. The scanned beam is homogenized by a beam homogenizer and a spatial light modulator is arranged to receive the homogenized scanned light beam and spatially modulate the beam in accordance with a component of an image to be displayed. Projection optics are projecting the homogenized scanned light beam onto a screen. The scanning provides that the homogenized scanned light beam at the screen has a coherence radius less than the original coherence radius of the beam. The reduced coherence radius contributes to minimizing speckle contrast in the image displayed on the screen. The screen includes one or more features providing a further contribution to minimizing speckle contrast in the displayed image. In one example, the screen includes a transparent cell containing a liquid having light scattering particles in suspension.
摘要翻译： 投影视频显示器包括用于传送光束的至少一个激光器。 显示器包括光束均化器和聚光透镜。 提供了一种扫描装置，用于以有效地增加光束发散的方式在聚光透镜上以特定图案扫描光束中的光。 扫描的光束通过光束均化器均质化，并且空间光调制器被布置成接收均匀化的扫描光束，并且根据要显示的图像的分量对光束进行空间调制。 投影光学器件将均匀化的扫描光束投影到屏幕上。 扫描提供了屏幕上的均匀化扫描光束的相干半径小于光束的原始相干半径。 减小的相干半径有助于最小化屏幕上显示的图像中的斑点对比度。 屏幕包括一个或多个特征，为减少显示图像中的散斑对比度提供进一步的贡献。 在一个示例中，屏幕包括含有悬浮液中具有光散射颗粒的液体的透明单元。
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公开(公告)号：US20050190810A1
公开(公告)日：2005-09-01
申请号：US10788820
申请日：2004-02-27
申请人： Stuart Butterworth , Murray Reed , Dennis Fischer
发明人： Stuart Butterworth , Murray Reed , Dennis Fischer
CPC分类号： H01S5/02484 , H01S5/0213 , H01S5/0215 , H01S5/0217 , H01S5/041 , H01S5/183
摘要： An optically pumped semiconductor (OPS) structure includes a multilayer gain-structure surmounting a mirror structure. One surface of a diamond heat spreader is attached to the mirror structure via a contact bond. The opposite surface of the heat spreader is bonded to a metal heat sink. In one example, the OPS-structure also has a diamond window contact bonded to the gain-structure.
摘要翻译： 光泵浦半导体（OPS）结构包括覆盖反射镜结构的多层增益结构。 金刚石散热器的一个表面通过接触键连接到镜子结构。 散热器的相对表面与金属散热片接合。 在一个示例中，OPS结构还具有键合到增益结构的金刚石窗口触点。
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