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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：US20050220165A1
公开(公告)日：2005-10-06
申请号：US11133028
申请日：2005-05-19
申请人： Andrea Caprara , Juan Chilla , Luis Spinelli
发明人： Andrea Caprara , Juan Chilla , Luis Spinelli
CPC分类号： H01S5/041 , H01S3/07 , H01S3/0815 , H01S3/082 , H01S3/094053 , H01S3/09408 , H01S3/09415 , H01S3/105 , H01S3/1083 , H01S3/109 , H01S3/1095 , H01S3/139 , H01S5/02272 , H01S5/024 , H01S5/02423 , H01S5/02484 , H01S5/14 , H01S5/141 , H01S5/18383
摘要： External-cavity optically-pumped semiconductor lasers (OPS-lasers) including an OPS-structure having a mirror-structure surmounted by a surface-emitting, semiconductor multilayer (periodic) gain-structure are disclosed. The gain-structure is pumped by light from diode-lasers. The OPS-lasers can provide fundamental laser output-power of about two Watts (2.0 W) or greater. Intracavity frequency-converted arrangements of the OPS-lasers can provide harmonic laser output-power of about one-hundred milliwatts (100 mW) or greater, even at wavelengths in the ultraviolet region of the electromagnetic spectrum. These high output powers can be provided even in single axial-mode operation. Particular features of the OPS-lasers include a heat sink-assembly for cooling the OPS-structure, a folded resonator concept for providing optimum beam size at optically-nonlinear crystals used for frequency conversion, preferred selection of optically-nonlinear materials for frequency-conversion, and compound resonator designs for amplifying second harmonic-radiation for subsequent conversion to third or fourth harmonic radiation.
摘要翻译： 公开了包括具有由表面发射的半导体多层（周期）增益结构所覆盖的镜面结构的OPS结构的外腔光泵浦半导体激光器（OPS-激光器）。 增益结构由二极管激光器的光泵浦。 OPS激光器可以提供约2瓦（2.0瓦）或更大的基本激光输出功率。 OPS激光器的腔内频率转换装置即使在电磁波谱的紫外区域的波长下也能提供约百毫瓦（100mW）或更大的谐波激光输出功率。 即使在单轴向模式操作中也可以提供这些高输出功率。 OPS激光器的特征包括用于冷却OPS结构的散热器组件，用于在用于频率转换的光学非线性晶体处提供最佳光束尺寸的折叠谐振器概念，用于频率转换的光学非线性材料的优选选择 以及用于放大二次谐波辐射以用于随后转换成第三或第四谐波辐射的复合谐振器设计。
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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：US20050078718A1
公开(公告)日：2005-04-14
申请号：US10831991
申请日：2004-04-26
申请人： Luis Spinelli , Andrea Caprara
发明人： Luis Spinelli , Andrea Caprara
CPC分类号： H01S3/109 , G02F1/3532 , G02F1/3534 , G02F1/37 , G02F2001/354 , H01S3/1083 , H01S5/041 , H01S5/14
摘要： A method of intracavity frequency conversion in a CW laser includes causing fundamental radiation to circulate in a laser resonator. The fundamental radiation makes a first pass through an optically nonlinear crystal where a fraction of the fundamental radiation generates second-harmonic radiation in a forward pass through the crystal. The residual fundamental radiation and the second-harmonic radiation are then sum-frequency mixed in forward and reverse passes through an optically nonlinear crystal such that a fraction of each is converted to third-harmonic radiation. The residual second-harmonic radiation and fundamental radiation from the sum-frequency mixing then make a reverse pass through the second-harmonic generating crystal where the second-harmonic radiation is converted back to fundamental radiation. The third harmonic radiation can be delivered from the resonator as output radiation, or can be used to pump another optically nonlinear crystal in an optical parametric oscillator. Second-harmonic radiation can also be used to pump an optical parametric oscillator.
摘要翻译： 在CW激光器中的腔内频率转换的方法包括使基本辐射在激光谐振器中循环。 基本辐射首先通过光学非线性晶体，其中基波的一部分在向前通过晶体时产生二次谐波辐射。 剩余的基本辐射和二次谐波辐射然后在正向和反向通过光学非线性晶体进行和频混合，使得其中的一部分转换成三次谐波辐射。 来自和频混合的残余二次谐波辐射和基波辐射反向通过二次谐波产生晶体，二次谐波辐射被转换回基本辐射。 三次谐波辐射可以作为输出辐射从谐振器输出，或者可以用于在光参量振荡器中泵浦另一光学非线性晶体。 二次谐波辐射也可用于泵浦光参量振荡器。
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公开(公告)号：US20060222372A1
公开(公告)日：2006-10-05
申请号：US11387400
申请日：2006-03-23
IPC分类号： H04B10/04
CPC分类号： H01S3/2383 , G02F1/3534 , G02F1/37 , G02F2001/354 , H01S3/0085 , H01S3/06754 , H01S3/109 , H01S3/1304 , H01S3/1305 , H01S3/1608 , H01S3/1611 , H01S3/1618 , H01S3/2308
摘要： Laser apparatus including two different, pulsed MOPAs, one having a fundamental wavelength of 1064 nm and the other having a fundamental wavelength of 1564 nm, provide trains of optical pulses. The 1064-nm pulses are frequency tripled to 355 nm and the 1564-nm pulses are frequency doubled to 782 nm. The 355-nm and 782-nm pulses are mixed to provide 244-nm pulses. The 244-nm pulses are mixed with residual 1064-nm pulses to provide 198-nm output pulses of the apparatus. The output pulses can be either digitally modulated or amplitude modulated by controlling the phase relationship between the 1064-nm and 1564-nm pulses.
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6.发明申请公开(公告)号：US20050163187A1
公开(公告)日：2005-07-28
申请号：US10826835
申请日：2004-04-16
申请人： Luis Spinelli , Andrea Caprara
发明人： Luis Spinelli , Andrea Caprara
CPC分类号： H01S3/083 , H01S3/0813 , H01S3/0816 , H01S3/109 , H01S3/1611 , H01S3/1673 , H01S5/141 , H01S5/183
摘要： A traveling-wave ring laser resonator includes one or more gain-elements for generating fundamental radiation and three optically nonlinear crystals. A portion of the fundamental radiation is converted to second-harmonic radiation in a first of the crystals. Remaining fundamental radiation and the second-harmonic radiation traverse a second of the optically nonlinear crystals where a portion of each is converted to third-harmonic radiation. Fundamental and second-harmonic radiation pass through the third of the optically nonlinear crystals where most of the second-harmonic radiation is converted back to fundamental radiation. The third-harmonic radiation can be delivered from the resonator as output radiation or mixed with the fundamental radiation in a fourth optically nonlinear crystal to generate fourth harmonic radiation. An optical parametric oscillator arrangement is also disclosed.
摘要翻译： 行波环形激光谐振器包括用于产生基本辐射的一个或多个增益元件和三个光学非线性晶体。 基本辐射的一部分在第一晶体中转换成二次谐波辐射。 剩余的基波辐射和二次谐波辐射穿过光学非线性晶体中的第二个，其中一部分被转换为三次谐波辐射。 基波和二次谐波辐射通过第三个光学非线性晶体，其中大部分二次谐波辐射被转换回基本辐射。 三次谐波辐射可以作为输出辐射从谐振器输出或与第四光学非线性晶体中的基本辐射混合以产生第四谐波辐射。 还公开了一种光参量振荡器装置。
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7.发明授权Traveling-wave laser having a resonator including a direction-sensitive interferometer for establishing unidirectional circulation 有权具有包括用于建立单向循环的方向敏感干涉仪的谐振器的行波激光器公开(公告)号：US08000372B1
公开(公告)日：2011-08-16
申请号：US12235790
申请日：2008-09-23
申请人： R. Russel Austin , Andrea Caprara
发明人： R. Russel Austin , Andrea Caprara
CPC分类号： H01S3/083 , H01S3/0602 , H01S3/07 , H01S3/094053 , H01S3/09415 , H01S3/10061 , H01S3/1062 , H01S3/1066
摘要： A laser includes a traveling-wave ring-resonator in which one resonator mirror is a mirror of an interferometer arranged such that, when the interferometer is operated in an anti-resonant condition, the mirror has a greater effective reflectivity for clockwise circulation of light in the resonator than for anticlockwise circulation of light in the resonator. There is a difference between the clockwise and anticlockwise effective-reflectivity sufficient that lasing in the resonator is possible only in the clockwise direction.
摘要翻译： 激光器包括行波环形谐振器，其中一个谐振镜是干涉仪的反射镜，其布置成使得当干涉仪在反谐振条件下操作时，反射镜具有更大的有效反射率，用于顺时针循环光 谐振器比谐振器中的光的逆时针循环。 在顺时针和逆时针有效反射率之间存在足够的差异，足以使谐振器中的激光仅在顺时针方向上可能。
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公开(公告)号：US20100260210A1
公开(公告)日：2010-10-14
申请号：US12422913
申请日：2009-04-13
IPC分类号： H01S3/30
CPC分类号： H01S3/067 , H01S3/094007 , H01S3/094011 , H01S3/094057 , H01S3/09408 , H01S3/09415 , H01S5/024 , H01S5/041 , H01S5/14 , H01S5/183
摘要： An optical gain-fiber of a fiber-laser or a fiber-amplifier is optically pumped by radiation from a plurality of external cavity, optically pumped, surface-emitting semiconductor lasers (OPS-lasers). In one example, radiation from the OPS-lasers is focused by a lens into cladding of the gain-fiber at one end of the fiber. In another example radiation from the diode-lasers is focused into the core of a delivery fiber at one end of the delivery fiber. The other end of the delivery fiber is coupled to the cladding of the gain-fiber.
摘要翻译： 光纤激光器或光纤放大器的光增益光纤通过来自多个外腔，光泵浦，表面发射半导体激光器（OPS激光器）的辐射而被光泵浦。 在一个示例中，来自OPS激光器的辐射由透镜聚焦在纤维的一端处的增益光纤的包层中。 在另一示例中，来自二极管激光器的辐射聚焦到输送纤维的一端处的输送纤维的芯部。 传送光纤的另一端耦合到增益光纤的包层。
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公开(公告)号：US07633562B2
公开(公告)日：2009-12-15
申请号：US12012966
申请日：2008-02-06
IPC分类号： H01S3/08
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.
摘要翻译： 投影视频显示器包括包括以多个横向模式递送激光辐射的OPS激光器（多横模OPS激光器）的光源。 显示器包括用于根据要显示的图像的一部分来空间调制来自多横模OPS激光器的辐射的空间光调制器。 投影光学器件将空间调制光投射到要显示图像的屏幕上。 在一个示例中，OPS激光器是二极管激光阵列泵浦OPS激光器，是三个激光器之一，一个发射红光，一个发射蓝光，另一个传递绿光。 激光器被时间调制，使得空间光调制器分别接收来自每个激光器的光。 OPS激光器通过周期性地打开和关闭二极管激光器阵列而被直接时间调制。
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公开(公告)号：US07355657B2
公开(公告)日：2008-04-08
申请号：US11011075
申请日：2004-12-14
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.
摘要翻译： 投影视频显示器包括包括以多个横向模式递送激光辐射的OPS激光器（多横模OPS激光器）的光源。 显示器包括用于根据要显示的图像的一部分来空间调制来自多横模OPS激光器的辐射的空间光调制器。 投影光学器件将空间调制光投射到要显示图像的屏幕上。 在一个示例中，OPS激光器是二极管激光阵列泵浦OPS激光器，是三个激光器之一，一个发射红光，一个发射蓝光，另一个传递绿光。 激光器被时间调制，使得空间光调制器分别接收来自每个激光器的光。 OPS激光器通过周期性地打开和关闭二极管激光器阵列而被直接时间调制。
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