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    Wide-stripe single-mode diode-laser
    1.
    发明授权
    Wide-stripe single-mode diode-laser 失效
    宽条单模二极管激光器

    公开(公告)号：US07139300B2

    公开(公告)日：2006-11-21

    申请号：US10643621

    申请日：2003-08-19

    申请人： Serguei G. Anikitchev ,  Andrea Caprara

    发明人： Serguei G. Anikitchev ,  Andrea Caprara

    IPC分类号： H01S5/00

    CPC分类号： B82Y20/00 ,  H01S5/0425 ,  H01S5/0655 ,  H01S5/1014 ,  H01S5/1082 ,  H01S5/162 ,  H01S5/3211 ,  H01S5/3434 ,  H01S5/4031 ,  H01S2304/00

    摘要： A wide-stripe diode-laser includes a lower cladding region, a lower waveguide region, an active region, an upper waveguide region, and an upper cladding region all comprising semiconductor layers epitaxially grown on a semiconductor substrate. An elongated rectangular electrode on the upper cladding layer defines a stripe or pumped section. Adjacent the electrode is an unpumped section in which at least the quantum-well layer has been treated to cause the active region to be disordered. In this unpumped section, at least one area of the area is etched to a depth equal to or less than the thickness of the cladding region. The etched area provides a diverging lens effect in the waveguide region. The diverging lens effect expands the fundamental mode of the laser in the stripe to a width sufficient to improve single mode performance.

    摘要翻译： 宽条形二极管激光器包括全部包括在半导体衬底上外延生长的半导体层的下包层区域，下波导区域，有源区域，上波导区域和上覆层区域。 上包层上的细长矩形电极限定条状或泵送部分。 与电极相邻的是未冲洗的部分，其中至少已经处理了量子阱层以使有源区域无序。 在该未抽出部分中，该区域的至少一个区域被蚀刻到等于或小于包层区域的厚度的深度。 蚀刻区域在波导区域中提供发散透镜效应。 发散透镜效应将条纹中的激光器的基本模式扩展到足以改善单模性能的宽度。

    OPS-LASER PUMPED FIBER-LASER
    3.
    发明申请
    OPS-LASER PUMPED FIBER-LASER 审中-公开
    OPS激光泵浦光纤激光器

    公开(公告)号：US20100260210A1

    公开(公告)日：2010-10-14

    申请号：US12422913

    申请日：2009-04-13

    申请人： Luis A. SPINELLI ,  Sergei V. Govorkov ,  Andrea Caprara

    发明人： Luis A. SPINELLI ,  Sergei V. Govorkov ,  Andrea Caprara

    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。

    Laser illuminated projection displays
    4.
    发明授权
    Laser illuminated projection displays 失效
    激光照明投影显示屏

    公开(公告)号：US07633562B2

    公开(公告)日：2009-12-15

    申请号：US12012966

    申请日：2008-02-06

    申请人： Juan L. Chilla ,  Sergei V. Govorkov ,  Andrea Caprara ,  Murray K. Reed ,  Luis A. Spinelli

    发明人： Juan L. Chilla ,  Sergei V. Govorkov ,  Andrea Caprara ,  Murray K. Reed ,  Luis A. Spinelli

    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。

    Laser illuminated projection displays
    5.
    发明授权
    Laser illuminated projection displays 失效
    激光照明投影显示屏

    公开(公告)号：US07355657B2

    公开(公告)日：2008-04-08

    申请号：US11011075

    申请日：2004-12-14

    申请人： Juan L. Chilla ,  Sergei V. Govorkov ,  Andrea Caprara ,  Murray K. Reed ,  Luis A. Spinelli

    发明人： Juan L. Chilla ,  Sergei V. Govorkov ,  Andrea Caprara ,  Murray K. Reed ,  Luis A. Spinelli

    IPC分类号： H04N9/31 ,  H01S3/08 ,  G03B21/14

    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。

    MOPA laser apparatus with two master oscillators for generating ultraviolet radiation
    7.
    发明申请
    MOPA laser apparatus with two master oscillators for generating ultraviolet radiation 有权
    具有两个用于产生紫外线辐射的主振荡器的MOPA激光装置

    公开(公告)号：US20070263679A1

    公开(公告)日：2007-11-15

    申请号：US11433937

    申请日：2006-05-15

    申请人： Andrei Staroudoumov ,  Andrea Caprara ,  Norman Hodgson

    发明人： Andrei Staroudoumov ,  Andrea Caprara ,  Norman Hodgson

    IPC分类号： H01S3/10

    CPC分类号： G02F1/3534 ,  G02F2201/16

    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 1547 nm, provide trains of optical pulses. The 1064-nm pulses are frequency-quadrupled to a wavelength of 266 nm. The 1547-nm pulses are first mixed with the 266-nm pulses to provide pulses having a wavelength of 227 nm. The 227-nm pulses are then mixed with residual 1547-nm pulses from the first mixing to provide 198-nm output pulses of the apparatus.

    摘要翻译： 包括两个不同的脉冲MOPA的激光装置，一个基本波长为1064nm，另一个具有1547nm的基波，提供光脉冲列。 1064nm的脉冲频率为四倍，波长为266nm。 首先将1547nm脉冲与266nm脉冲混合以提供波长为227nm的脉冲。 然后将227nm脉冲与来自第一次混合的残留1547nm脉冲混合，以提供装置的198nm输出脉冲。

    Laser illuminated projection displays
    8.
    发明申请
    Laser illuminated projection displays 失效
    激光照明投影显示屏

    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。

    Intracavity frequency-tripled CW laser
    9.
    发明申请
    Intracavity frequency-tripled CW laser 失效
    腔内频率三倍CW激光

    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

    IPC分类号： G02F1/35 ,  G02F1/37 ,  H01S3/108 ,  H01S3/109 ,  H01S5/04 ,  H01S5/14 ,  H01S3/10

    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。