公开(公告)号：WO1997042533A1

公开(公告)日：1997-11-13

申请号：PCT/US1997007231

申请日：1997-05-01

申请人： LASER POWER CORPORATION ,  FLINT, Graham, W.

发明人： LASER POWER CORPORATION

IPC分类号： G02B06/26

CPC分类号： G02B6/3636 ,  G02B6/04 ,  G02B6/25 ,  G02B6/3652 ,  G02B6/368 ,  G02B6/3812 ,  G02B6/4203 ,  G02B6/4216 ,  G02B6/4249 ,  H01S5/4012

摘要： A fiber optic coupler (203) for coupling an asymmetrical beam such as provided by a laser diode (600) into a fiber optic cable. The coupler comprises at least one fiber optic cable having a first end including a tapered section (410) that has an approximately flat coupling facet (520) for receiving the asymmetrical beam and an approximately flat tapered surface adjacent to the coupling facet for reflecting the rapidly diverging radiation, a main body for receiving and transmitting the reflected laser radiation, and an output end (300) having an approximately flat output facet. A support structure situates the coupling facet proximate to the laser diode (600). A second, approximately flat tapered surface may be formed in the tapered section opposite the first tapered surface. The fiber optic cable may have any cross section, such as circular, rectangular, or square. The coupler is particularly useful for coupling multiple output beams from a laser diode array (600) into a plurality of fibers that are collected on their output ends (300) to approximate a single beam, which can be the applied to end-pump a solid state laser.

摘要翻译： 用于将诸如由激光二极管（600）提供的非对称光束耦合到光纤电缆中的光纤耦合器（203）。 耦合器包括至少一个光纤电缆，其具有第一端，该第一端包括锥形部分（410），该锥形部分具有用于接收非对称光束的大致平坦的耦合小面（520）和邻近耦合面的近似平坦的锥形表面，用于反射快速 发散辐射，用于接收和发射反射的激光辐射的主体，以及具有近似平坦的输出小面的输出端（300）。 支撑结构使耦合面靠近激光二极管（600）。 可以在与第一锥形表面相对的锥形部分中形成第二大致平坦的锥形表面。 光纤电缆可以具有任何横截面，例如圆形，矩形或正方形。 耦合器特别适用于将来自激光二极管阵列（600）的多个输出光束耦合到多个光纤中，所述多个光纤在其输出端（300）收集以近似单个光束，其可以应用于端泵 状态激光。

公开(公告)号：WO1998020475A1

公开(公告)日：1998-05-14

申请号：PCT/US1997019660

申请日：1997-10-27

申请人： LASER POWER CORPORATION

发明人： LASER POWER CORPORATION ,  FINK, Charles, G. ,  FLINT, Graham, W.

IPC分类号： G09G03/00

CPC分类号： H04N9/3105 ,  G09G3/02 ,  G09G3/2007 ,  H04N5/74 ,  H04N9/3129 ,  H04N9/3152 ,  H04N9/3161

摘要： A time synchronized digital modulation (TSDM) image display system (10, 20) that achieves a high level of gray scale resolution while utilizing binary light modulators. By producing color digitally, extremely accurate and consistent color reproduction is achieved. In the preferred embodiment the system includes a light source (21, 22, 23) producing a light beam of optical radiation that is divided into a plurality of beamlets which are modulated in a light modulator (36, 38, 40, 48) having M rows by N columns of modulator elements. Each modulator element (50) has an "on" state and an "off" state that is controllable by a set of image signals. In the "on" state a predetermined beamlet is transmitted by the modulator element, and in the "off" state the beamlet is prevented from being transmitted. When all of the modulator elements are in the "on" state, the intensity of the modulator output varies so that there is a different intensity of light transmitted by each modulator element. The modulated light beam is then scanned across a viewing surface (98). The modulator is synchronised with the scanner (64) so that during each scan a predetermined pattern of "on" and "off" states is present in the modulator, thus projecting a predetermined total intensity level of light onto each pixel of the viewing surface. Due to the speed at which the scanning occurs, a viewer perceives only the total integrated light intensity for each pixel, thereby producing a predetermined gray level (and thus color level) on each image pixel based on the particular pattern of "on" and "off" states of the modulator elements. When spectrally pure lasers are used for the light sources, the TSDM system makes standardizable digital color reproduction possible.

摘要翻译： 一种使用二进制光调制器的时间同步数字调制（TSDM）图像显示系统（10,20），可实现高水平的灰度分辨率。 通过以数字方式产生颜色，实现了极其准确和一致的色彩再现。 在优选实施例中，该系统包括产生光辐射光束的光源（21,22,23），其被分成多个子束，其在具有M个光调制器（36,38,40,48）中被调制 行N排调制元件。 每个调制器元件（50）具有可由一组图像信号控制的“开”状​​态和“关”状态。 在“接通”状态下，调制器元件发送预定的子波束，并且在“关闭”状态下防止子波束被发送。 当所有调制器元件都处于“接通”状态时，调制器输出的强度变化，使得每个调制器元件发射的光的强度不同。 然后在观察表面（98）上扫描经调制的光束。 调制器与扫描器（64）同步，使得在每次扫描期间，调制器中存在预定的“开”和“关”状态，从而将预定的总强度水平投影到观察表面的每个像素上。 由于扫描发生的速度，观看者仅感知每个像素的总的积分光强度，从而基于“开”和“”的特定图案，在每个图像像素上产生预定的灰度级（并因此产生颜色水平） 关闭“调制器元件的状态。 当光谱纯激光器用于光源时，TSDM系统可以实现标准化的数字彩色再现。

公开(公告)号：WO1994029937A2

公开(公告)日：1994-12-22

申请号：PCT/US1994006590

申请日：1994-06-10

申请人： LASER POWER CORPORATION ,  HARGIS, David, E.

发明人： LASER POWER CORPORATION

IPC分类号： H01S03/109

CPC分类号： H01S3/109 ,  H01S3/0604 ,  H01S3/0615 ,  H01S3/0627 ,  H01S3/1095 ,  H01S5/0605

摘要： A microlaser formed from a self-doubling crystal which has two opposite dielectrically coated faces and which is positioned in close proximity to a diode laser pump source for intracavity second harmonic generation of blue light. By employing the proper doping concentrations of lasant material and pumping the gain medium which has a specific crystalline orientation, the desired efficient blue microlaser is achieved.

摘要翻译： 由具有两个相反的介电涂层面的自重晶体形成的微激光器，其位于紧邻二极管激光泵浦源的二极管激光源中，用于蓝光的腔内二次谐波产生。 通过使用惰性材料的适当掺杂浓度并泵送具有特定结晶取向的增益介质，实现了所需的有效蓝色微激光器。

公开(公告)号：WO1998032197A1

公开(公告)日：1998-07-23

申请号：PCT/US1997023029

申请日：1997-12-12

申请人： LASER POWER CORPORATION

发明人： LASER POWER CORPORATION ,  HARGIS, David, E. ,  NELTE, Sven, E.

IPC分类号： H01S03/042

CPC分类号： H01S3/0627 ,  G02F2001/3503 ,  H01S3/025 ,  H01S3/0401 ,  H01S3/0405 ,  H01S3/042 ,  H01S3/0602 ,  H01S3/0604 ,  H01S3/0612 ,  H01S3/0815 ,  H01S3/0816 ,  H01S3/082 ,  H01S3/09415 ,  H01S3/109 ,  H01S3/1611 ,  H01S3/1671 ,  H01S3/1673 ,  H01S2302/00 ,  H01S2303/00

摘要： A longitudinally-cooled laser element assembly comprises an optically transparent heat sink (OTH) (110, 120) coupled to a laser element (100) and a heat sink (130, 140). An etalon structure including a first flat surface and a second, substantially parallel flat surface is formed in the laser element and/or the OTH. In some embodiments, a balanced etalon is provided by forming a reflector on the second flat surface (107) of the etalon that has a reflectivity approximately equal to the Fresnel loss at the interface between the OTH and the laser element. In some embodiments the laser element assembly includes a second OTH (120) coupled to the laser element at a second interface, thereby defining a second Fresnel loss. Preferably, the second OTH has an index of refraction substantially equal to the index of refraction of the first OTH, so that said first and second Fresnel losses are approximately equal and a balanced etalon is formed. In some embodiments the laser element comprises a solid-state gain medium. In other embodiments the laser element comprises a nonlinear frequency conversion crystal. An intracavity frequency-converted laser is described in which OTHs are used to cool both the gain medium and the nonlinear material.

摘要翻译： 纵向冷却的激光元件组件包括耦合到激光元件（100）和散热器（130,140）的光学透明散热器（OTH）（110,120）。 在激光元件和/或OTH中形成包括第一平坦表面和第二基本上平行的平坦表面的标准具结构。 在一些实施例中，通过在标准具的第二平坦表面（107）上形成反射率来提供平衡的标准具，该反射率大约等于OTH和激光元件之间的界面处的菲涅耳损耗。 在一些实施例中，激光元件组件包括在第二界面处耦合到激光元件的第二OTH（120），从而限定第二菲涅耳损耗。 优选地，第二OTH具有基本上等于第一OTH的折射率的折射率，使得所述第一和第二菲涅尔损耗近似相等，并且形成平衡的标准具。 在一些实施例中，激光元件包括固态增益介质。 在其它实施例中，激光元件包括非线性频率转换晶体。 描述了腔内频率转换激光器，其中使用OTH来冷却增益介质和非线性材料。

公开(公告)号：WO1998024240A1

公开(公告)日：1998-06-04

申请号：PCT/US1997021545

申请日：1997-11-26

申请人： LASER POWER CORPORATION

发明人： LASER POWER CORPORATION ,  HARGIS, David, E. ,  FINK, Charles, G. ,  BERGSTEDT, Robert, A. ,  FLINT, Graham, W.

IPC分类号： H04N09/31

CPC分类号： H04N9/3132

摘要： A display system includes blue, green, and red laser light sources and light shaping devices which receive the laser light from the laser light sources and shapes the light into a number of approximately identical beamlets. The beamlets are modulated individually and the modulated beamlets are combined. The combining results in an output of beamlets, each of which comprises three input beamlets of each of the colors red, green, and blue. The resultant beamlets can then be scanned onto a display screen.

摘要翻译： 显示系统包括蓝色，绿色和红色激光光源和光学成形装置，其接收来自激光光源的激光，并将光线形成多个大致相同的子束。 子束被单独调制，调制的子束被组合。 组合产生子束的输出，每个子束包括红色，绿色和蓝色中的每一种的三个输入子束。 然后可以将所得的小束扫描到显示屏上。

公开(公告)号：WO1998025327A1

公开(公告)日：1998-06-11

申请号：PCT/US1997022172

申请日：1997-11-26

申请人： LASER POWER CORPORATION

发明人： LASER POWER CORPORATION ,  HARGIS, David, E. ,  NELTE, Sven, E.

IPC分类号： H01S03/109

CPC分类号： H01S3/042 ,  G02F2001/3503 ,  H01S3/0405 ,  H01S3/0602 ,  H01S3/0612 ,  H01S3/0627 ,  H01S3/0815 ,  H01S3/0816 ,  H01S3/082 ,  H01S3/09415 ,  H01S3/109 ,  H01S3/1611 ,  H01S3/1671 ,  H01S3/1673 ,  H01S2302/00 ,  H01S2303/00

摘要： An intracavity frequency-converted laser having an intracavity reflector situated to reflect converted radiation at a nonzero angle with respect to the optical axis. The laser includes an optical cavity (40) that defines an optical axis, a gain medium (46) for providing a fundamental laser emission, a pump source (60) for pumping the gain medium, and a nonlinear material (62) for frequency converting the fundamental laser emission to provide first and second converted beams that propagate in opposite directions within the optical cavity. An angled reflector (70) that reflects optical radiation at the converted wavelength, but is transmissive at the fundamental wavelength is situated within the optical cavity to reflect one of the converted beams along a path angled with respect to the optical axis. Reflecting the converted radiation before it propagates through the gain medium avoids absorption losses. Furthermore, interference between the reflected beam and other converted beam is avoided due to the angle of reflection.

摘要翻译： 一种腔内频率转换激光器，其具有位于相对于光轴以非零角度反射转换的辐射的腔内反射器。 激光器包括限定光轴的光腔（40），用于提供基本激光发射的增益介质（46），用于泵浦增益介质的泵浦源（60）和用于频率转换的非线性材料（62） 基本激光发射以提供在光腔内沿相反方向传播的第一和第二转换光束。 反射在转换的波长但在基波长上透射的光辐射的倾斜反射器（70）位于光学腔内，以沿着相对于光轴成角度的路径反射一个转换光束。 转换的辐射在传播通过增益介质之前反射，避免了吸收损失。 此外，由于反射角度，避免了反射光束和其它转换光束之间的干涉。

公开(公告)号：WO1995010159A3

公开(公告)日：1995-04-13

申请号：PCT/US1994011181

申请日：1994-09-30

申请人： LASER POWER CORPORATION ,  HARGIS, David, E. ,  FLINT, Graham ,  ASSA, Shlomo

发明人： LASER POWER CORPORATION

IPC分类号： H04N09/31

公开(公告)号：WO1995006345A2

公开(公告)日：1995-03-02

申请号：PCT/US1994009393

申请日：1994-08-22

申请人： LASER POWER CORPORATION ,  HARGIS, David, E. ,  NELTE, Sven, E.

发明人： LASER POWER CORPORATION

IPC分类号： H01S03/109

CPC分类号： H01S3/0627 ,  H01S3/0405 ,  H01S3/0602 ,  H01S3/0604 ,  H01S3/0612 ,  H01S3/0615 ,  H01S3/07 ,  H01S3/0809 ,  H01S3/09415 ,  H01S3/109 ,  H01S3/1611 ,  H01S3/1671 ,  H01S2302/00 ,  H01S2303/00

摘要： A monolithic diode pumped solid-state laser (11) comprising as the laser host neodymium-doped yttrium orthovanadate (Nd:YVO4) (12, 52) or neodymium-doped gadolinium orthovanadate (Nd:GdVO4) (57, 67) operating on the F3/2 } I9/2 ( SIMILAR 914 nm or SIMILAR 912 nm respectively) transition, to which a suitable nonlinear optic material (16), such as potassium niobate (KNbO3) or beta barium borate (BBO), is bonded. The nonlinear crystal gives rise to intracavity frequency doubling to SIMILAR 457 or SIMILAR 456 nm. The microlaser is a composite cavity formed form a gain medium crystal and a nonlinear frequency doubling material which together have four spaced parallel dielectrically coated faces (14, 17, 18, 15) and which is positioned in close proximity to a diode laser pump source (13) for phase-matched harmonic generation of blue light along an axis of propagation which lies substantially perpendicular to the two faces of the composite cavity. By employing specific doping concentration-length products of lasant material and pumping the gain medium which has a specific crystalline orientation the desired efficient blue microlaser is achieved. Alternative embodiments combine the Nd:YVO4 and Nd:GdVO4 elements to enhance certain output characteristics of the laser.

摘要翻译： 单片二极管泵浦固态激光器（11）包括作为激光主机钕掺杂的原钒酸钇（Nd：YVO4）（12,52）或掺杂钕掺杂的原钒酸钆（Nd：GdVO 4）（57,67） 适当的非线性光学材料（16），例如铌酸钾（KNbO 3）或硼酸钡（BBO），向其中转移， ，是粘合的。 非线性晶体引起腔内倍频到类似457或类似的456nm。 微激光器是由增益介质晶体和非线性倍频材料形成的复合空腔，它们共同具有四个间隔开的平行的介电涂覆面（14,17,18,15），并且位于二极管激光泵浦源附近 13）用于沿着基本上垂直于复合腔的两个面的传播轴线的蓝光的相位匹配谐波产生。 通过使用惰性材料的特定掺杂浓度长度产物并泵送具有特定结晶取向的增益介质，实现了期望的有效蓝色微激光器。 替代实施例组合Nd：YVO4和Nd：GdVO4元素以增强激光器的某些输出特性。

公开(公告)号：WO1994024590A2

公开(公告)日：1994-10-27

申请号：PCT/US1994003955

申请日：1994-04-12

申请人： LASER POWER CORPORATION ,  FLINT, Graham, W.

发明人： LASER POWER CORPORATION

IPC分类号： G02B06/10

CPC分类号： G02B13/0095 ,  G02B6/102 ,  G02B6/4296 ,  G02B7/24 ,  G02B17/008 ,  Y10S385/902

摘要： A flexible light conduit which preserves the coherence of a transmitted beam. Several conduit elements (21, 28; 52, 62) having optical elements (14, 22; 45, 46) mounted inside each one are connected together (26) to form a chain. Each conduit element is tiltably coupled to each adjacent conduit element in the chain. The optical elements may be refractive (14, 22) or reflective (45, 46). The conduit preserves the spatial coherence properties of the beam so the input image is reimaged at a distant place, having passed through the series of relay optical elements through the angles permitted by the coupling members.

摘要翻译： 柔性光导管，保持透射光束的相干性。 安装在每一个内部的具有光学元件（14,22; 45,46）的几个管道元件（21,28; 52,62）连接在一起（26）以形成链条。 每个管道元件可倾斜地联接到链条中的每个相邻管道元件。 光学元件可以是折射（14,22）或反射（45,46）。 导管保留光束的空间相干性质，使得输入图像在远离的地方被重新成像，已经通过连接构件允许的角度穿过一系列中继光学元件。