公开(公告)号：US06625194B1

公开(公告)日：2003-09-23

申请号：US09336061

申请日：1999-06-18

Applicant: Yushi Kaneda

Inventor： Yushi Kaneda

IPC: H01S391

CPC classification number: H01S3/094 ,  H01S3/0606 ,  H01S3/0625 ,  H01S3/063 ,  H01S3/07 ,  H01S3/094084 ,  H01S3/0941 ,  H01S3/10092 ,  H01S3/2308

Abstract: A laser beam generation apparatus includes a solid state laser medium having first and second optically polished planes provided opposed with each other to allow a laser beam to be pumped to pass out of one of the first and second optically polished planes. At least one third optical polished plane which is different from the first and second optically polished planes is also provided. A pumping beam source emits a pumping light beam to pump the laser medium and impinges the pumping light source to be incident on the at least one third optically polished plane. Further, the pumping laser beam is provided at an incident angle substantially equal to the Brewster angle.

Abstract translation: 激光束产生装置包括固体激光介质，其具有彼此相对设置的第一和第二光学抛光平面，以允许激光束被泵出以从第一和第二光学抛光平面中的一个抛出。 还提供了与第一和第二光学抛光平面不同的至少一个第三光学抛光平面。 泵送光束源发射泵浦光束以泵送激光介质并且将激发光源照射入入至少一个第三光学抛光平面上。 此外，泵浦激光束以基本上等于布鲁斯特角的入射角设置。

公开(公告)号：US06256142B1

公开(公告)日：2001-07-03

申请号：US09584011

申请日：2000-05-30

Applicant: Hagop Injeyan ,  Carolyn S. Hoefer

Inventor： Hagop Injeyan ,  Carolyn S. Hoefer

IPC: H01S300

CPC classification number: H01S3/09415 ,  H01S3/0606 ,  H01S3/0625 ,  H01S3/08095 ,  H01S3/09408 ,  H01S3/11 ,  H01S3/1603 ,  H01S3/1643 ,  H01S3/2308

Abstract: An optical amplifier which includes an elongated slab of solid state lasing material, such as a rare earth doped yttrium-aluminum-garnet (YAG). In order to provide a relatively increased absorption length and thus a higher overall efficiency, the optical amplifier in accordance with the present invention incorporates end pumping in which the pumped light is coaligned with the amplified light resulting in relatively longer absorption lengths and higher overall efficiencies. The coaligned pumped sources are directed to lateral faces of the slab which include windows, formed from an insulating coating such as an anti-reflection coating, at the pump wavelength. In order to cause internal reflection of the pump beam along the lasing axis, the end faces are formed at about a 45° angle relative to the longitudinal axis which causes the pumped light to be reflected within the slab co-axially a with a amplified light. In order to confine the absorption of the pumped light to the center portion of the slab, the opposing end portions of the slab may be undoped while the center portion of the slab along the longitudinal axis is doped. Such a configuration provides relatively low residual thermal lensing with virtually no birefringence.

Abstract translation: 一种光放大器，其包括细长的固态激光材料板，例如稀土掺杂的钇 - 铝 - 石榴石（YAG）。 为了提供相对增加的吸收长度并因此提供更高的总体效率，根据本发明的光放大器结合了端泵浦，其中泵浦光与放大的光轴相结合，导致相对更长的吸收长度和更高的总体效率。 联合的泵浦源被引导到板的横向面，其包括由诸如防反射涂层的绝缘涂层形成的窗口，在泵浦波长处。 为了引起泵浦光束沿着激光轴的内部反射，端面相对于纵向轴线以大约45度的角度形成，这使得泵浦的光在板内与放大的光同轴地反射 。 为了将抽吸光的吸收限制在板坯的中心部分，板坯的相对的端部可以是未掺杂的，而沿着纵向轴线的板坯的中心部分被掺杂。 这种构造提供了相对较低的剩余热透镜，实际上没有双折射。

公开(公告)号：US06178035B1

公开(公告)日：2001-01-23

申请号：US08955725

申请日：1997-10-22

Applicant: Akira Eda ,  Kiyofumi Muro

Inventor： Akira Eda ,  Kiyofumi Muro

IPC: G02F135

CPC classification number: H01S3/2383 ,  G02B3/0012 ,  G02B3/0018 ,  G02B3/005 ,  G02B3/0056 ,  G02B3/0068 ,  G02B6/1245 ,  G02F1/37 ,  G03F7/0005 ,  H01S3/0606 ,  H01S3/0615 ,  H01S3/0621 ,  H01S3/0625 ,  H01S3/0627 ,  H01S3/08095 ,  H01S3/09415 ,  H01S3/2308 ,  H01S5/0267 ,  H01S5/18388

Abstract: An optical device includes a light transmitting non-linear optical material having a first face and a second face. The first and second faces oppose each other. The first face has a plurality of first reflecting portions provided thereon, and the second face has a plurality of second reflecting portions provided thereon. Each of the second reflecting portions corresponds to one of the first reflecting portions. Furthermore, the first and second faces are substantially flat except for at least one convex arcuate portion being formed on at least one of the first and second faces. Additionally, at least one of the first and second reflecting portions is obtained by coating a reflective material on the convex arcuate portion.

Abstract translation: 光学装置包括具有第一面和第二面的透光非线性光学材料。 第一面和第二面相互对立。 第一面具有设置在其上的多个第一反射部，第二面具有设置在其上的多个第二反射部。 每个第二反射部分对应于第一反射部分中的一个。 此外，除了形成在第一和第二面中的至少一个上的至少一个凸形弓形部分之外，第一和第二面基本上是平坦的。 此外，第一和第二反射部分中的至少一个通过在凸弧形部分上涂覆反射材料而获得。

公开(公告)号：US6094297A

公开(公告)日：2000-07-25

申请号：US111080

申请日：1998-07-07

Applicant: Hagop Injeyan ,  Carolyn S. Hoefer

Inventor： Hagop Injeyan ,  Carolyn S. Hoefer

IPC: H01S3/094 ,  H01S3/06 ,  H01S3/063 ,  H01S3/093 ,  H01S3/0941 ,  H01S3/16 ,  H01S3/23 ,  H01S3/00 ,  H01S3/091

CPC classification number: H01S3/09415 ,  H01S3/0606 ,  H01S3/0625 ,  H01S3/08095 ,  H01S3/09408 ,  H01S3/11 ,  H01S3/1603 ,  H01S3/1643 ,  H01S3/2308

Abstract: An optical amplifier which includes an elongated slab of solid state lasing material, such as a rare earth doped yttrium-aluminum-garnet (YAG). In order to provide a relatively increased absorption length and thus a higher overall efficiency, the optical amplifier in accordance with the present invention incorporates end pumping in which the pumped light is coaligned with the amplified light resulting in relatively longer absorption lengths and higher overall efficiencies. The coaligned pumped sources are directed to lateral faces of the slab which include windows, formed from an insulating coating such as an anti-reflection coating, at the pump wavelength. In order to cause internal reflection of the pump beam along the lasing axis, the end faces are formed at about a 45.degree. angle relative to the longitudinal axis which causes the pumped light to be reflected within the slab co-axially with a amplified light. In order to confine the absorption of the pumped light to the center portion of the slab, the opposing end portions of the slab may be undoped while the center portion of the slab along the longitudinal axis is doped. Such a configuration provides relatively low residual thermal lensing with virtually no birefringence.

Abstract translation: 一种光放大器，其包括细长的固态激光材料板，例如稀土掺杂的钇 - 铝 - 石榴石（YAG）。 为了提供相对增加的吸收长度并因此提供更高的总体效率，根据本发明的光放大器结合了端泵浦，其中泵浦光与放大的光轴相结合，导致相对更长的吸收长度和更高的总体效率。 联合的泵浦源被引导到板的横向面，其包括由诸如防反射涂层的绝缘涂层形成的窗口，在泵浦波长处。 为了引起泵浦光束沿着激光轴线的内部反射，端面相对于纵向轴线以大约45度的角度形成，这导致泵浦光在板内与放大的光线同轴地反射。 为了将抽吸光的吸收限制在板坯的中心部分，板坯的相对的端部可以是未掺杂的，而沿着纵向轴线的板坯的中心部分被掺杂。 这种构造提供了相对较低的剩余热透镜，实际上没有双折射。

公开(公告)号：US5963574A

公开(公告)日：1999-10-05

申请号：US63082

申请日：1998-04-21

Applicant: Eduard Gregor ,  Tzeng Chen ,  Hans W. Bruesselbach

Inventor： Eduard Gregor ,  Tzeng Chen ,  Hans W. Bruesselbach

IPC: H01S3/02 ,  H01S3/042 ,  H01S3/06 ,  H01S3/08 ,  H01S3/0941 ,  H01S3/091

CPC classification number: H01S3/0941 ,  H01S3/025 ,  H01S3/042 ,  H01S3/061 ,  H01S3/0612 ,  H01S3/0625 ,  H01S3/08059 ,  H01S3/08072 ,  H01S3/094084

Abstract: A compact diode pumped laser including a nonuniform, single-or double-sided diode pumped laser head and a polarization output coupled (POC) resonator. The POC resonator employs reflections from two opposing uncrossed roof prism mirrors to produce a uniform near field and far field beam with diffraction or near diffraction limited quality. The single laser head particularly includes a laser rod, a sapphire envelope located about the rod, an area of antireflection coating located on the sapphire envelope between the rod and the diode array, and a high reflectivity nickel-plated indium layer located on the sapphire envelope on the surface thereof outside of the area of antireflection coating.

Abstract translation: 一种紧凑型二极管泵浦激光器，包括不均匀，单面或双面二极管泵浦激光头和极化输出耦合（POC）谐振器。 POC谐振器采用来自两个相对的未交叉屋顶棱镜镜的反射，以产生具有衍射或近衍射限制质量的均匀近场和远场光束。 单个激光头特别包括激光棒，位于棒周围的蓝宝石外壳，位于棒和二极管阵列之间的蓝宝石外壳上的防反射涂层区域和位于蓝宝石外壳上的高反射率镀镍铟层 在防反射涂层区域外的表面上。

公开(公告)号：US5646773A

公开(公告)日：1997-07-08

申请号：US541540

申请日：1995-10-10

Applicant: Hagop Injeyan ,  Randall J. St. Pierre ,  Rodger C. Hilyard ,  George M. Harpole ,  Carolyn S. Hoefer

Inventor： Hagop Injeyan ,  Randall J. St. Pierre ,  Rodger C. Hilyard ,  George M. Harpole ,  Carolyn S. Hoefer

IPC: G02F1/35 ,  H01S3/04 ,  H01S3/042 ,  H01S3/06 ,  H01S3/08 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/109 ,  H01S3/23 ,  H01S3/09

CPC classification number: H01S3/2316 ,  H01S3/042 ,  H01S3/0606 ,  H01S3/0941 ,  H01S3/0407 ,  H01S3/0621 ,  H01S3/0625 ,  H01S3/08072 ,  H01S3/08095 ,  H01S3/10076 ,  H01S3/109

Abstract: A solid-state laser architecture producing a beam of extremely high quality and brightness, including a master oscillator operating in conjunction with a zig-zag amplifier, an image relaying telescope and a phase conjugation cell. One embodiment of the laser architecture compensates for birefringence that is thermally induced in the amplifier, but injects linearly polarized light into the phase conjugation cell. Another embodiment injects circularly polarized light into the phase conjugation cell and includes optical components that eliminate birefringence effects arising in a first pass through the amplifier. Optional features permit the use of a frequency doubler assembly to provide output at twice optical frequencies, and an electro-optical switch or Faraday rotator to effect polarization angle rotation if the amplifier material can only be operated at one polarization. The zig-zag amplifier is cooled by flow of cooling liquid, preferably using longitudinal flow to minimize temperature gradients in a vertical direction, and has cooling channel seals disposed in dead zones that receive no light, to minimize optical damage to the seals. Light is input to the amplifier at a near normal angle of incidence, to minimize polarization by reflection and to permit a polarizer to be used to extract an output beam from the amplifier. Antireflective coatings on edges and on sides of the amplifier eliminate parasitic oscillations, and wedge-shaped windows provide uniform pumping by eliminating gaps between diode arrays.

Abstract translation: 一种固态激光器架构，产生了极高质量和亮度的光束，包括与之前的Zig放大器，图像中继望远镜和相位共轭单元结合操作的主振荡器。 激光器结构的一个实施例补偿了在放大器中热感应的双折射，但是将线偏振光注入到相位共轭单元中。 另一实施例将圆偏振光注入到相位共轭单元中，并且包括消除在第一次通过放大器中产生的双折射效应的光学部件。 可选功能允许使用倍频器组件提供两倍光频率的输出，以及如果放大器材料只能在一个极化下操作，则电光开关或法拉第旋转器可实现偏振角旋转。 锯齿形放大器通过冷却液体的流动来冷却，优选地使用纵向流动以使垂直方向上的温度梯度最小化，并且具有设置在不受光照射的死区中的冷却通道密封件，以最小化对密封件的光学损伤。 光以接近的正常入射角输入到放大器，以通过反射使偏振最小化，并允许使用偏振器从放大器提取输出光束。 在放大器的边缘和侧面上的抗反射涂层消除了寄生振荡，楔形窗口通过消除二极管阵列之间的间隙来提供均匀的泵浦。

公开(公告)号：US5485482A

公开(公告)日：1996-01-16

申请号：US165781

申请日：1993-12-08

Applicant: Mark D. Selker ,  Robert S. Afzal

Inventor： Mark D. Selker ,  Robert S. Afzal

IPC: H01S3/06 ,  H01S3/08 ,  H01S3/0941 ,  H01S3/091

CPC classification number: H01S3/0941 ,  H01S3/0606 ,  H01S3/0612 ,  H01S3/0625 ,  H01S3/08072 ,  H01S3/08095 ,  H01S3/094084

Abstract: An efficient, fundamental transverse mode selected, diode pumped, solid state laser is disclosed. The laser consists of a slab of laser gain material such as Nd:YLF. Cavity forming optics are positioned around the slab of laser gain material. A laser diode bar, collimated by a micro-lens is used for side pumping a constrained gain region in the slab of laser gain material, with the dimensions transverse to the direction of beam propagation of the constrained gain region being smaller in at least one axis than the transverse dimensions of the fundamental transverse mode volume in the laser gain material. The cavity forming optics and the side pumping of the constrained gain region act in conjunction such that the fundamental transverse mode is automatically selected in the solid state laser.

Abstract translation: 公开了一种有效的基本横向模式，二极管泵浦固态激光器。 激光由激光增益材料如Nd：YLF组成。 腔形成光学元件位于激光增益材料板周围。 由微透镜准直的激光二极管条被用于侧面激励激光增益材料板中的约束增益区域，其中横截于约束增益区域的光束传播方向的尺寸在至少一个轴线上较小 比激光增益材料中的基本横向体积的横向尺寸。 腔形成光学器件和约束增益区域的侧向泵浦结合起来使得在固态激光器中自动选择基本横向模式。

公开(公告)号：US5455838A

公开(公告)日：1995-10-03

申请号：US152471

申请日：1993-11-15

Applicant: Jean-Marc Heritier ,  Edward C. Rea, Jr.

Inventor： Jean-Marc Heritier ,  Edward C. Rea, Jr.

IPC: H01S3/094 ,  H01S3/04 ,  H01S3/042 ,  H01S3/06 ,  H01S3/063 ,  H01S3/07 ,  H01S3/08 ,  H01S3/0941

CPC classification number: H01S3/0941 ,  H01S3/042 ,  H01S3/0405 ,  H01S3/0606 ,  H01S3/0625 ,  H01S3/063 ,  H01S3/07 ,  H01S3/08072 ,  H01S3/2316

Abstract: The use of rectangular cross-section gain material with two or more cylindrical lenses placed in close proximity or attached to opposite sides of the gain material allows for an efficient pumping of the gain material in an optical gain component. The optical gain component can be used in a laser device. Laser diode bars are arranged so as to pump the gain material through the lenses. A cooling apparatus can cool a rectangular cross-section gain material through two opposite flat sides so that no thermal birefringence is created. An optical gain component with two gain materials can orient these two gain materials such that the small-signal gain is almost circular and gaussian in profile with a large center peak tapering off to a much lower gain at the edges.

Abstract translation: 使用具有放置在增益材料的相对侧附近或连接到增益材料的相对侧的两个或更多个柱面透镜的矩形横截面增益材料允许增益材料在光学增益部件中的有效泵浦。 光学增益分量可用于激光装置。 激光二极管条布置成泵送增益材料通过透镜。 冷却装置可以通过两个相对的平坦侧来冷却矩形横截面增益材料，使得不产生热双折射。 具有两个增益材料的光学增益分量可以定向这两个增益材料，使得小信号增益几乎是圆形的，高分布的形状具有大的中心峰值，在边缘处逐渐减小到更低的增益。

公开(公告)号：US5349600A

公开(公告)日：1994-09-20

申请号：US116323

申请日：1993-09-03

Applicant: Osamu Shinbori ,  Yoshinori Mimura ,  Yukio Noda ,  Tetsuya Nakai

Inventor： Osamu Shinbori ,  Yoshinori Mimura ,  Yukio Noda ,  Tetsuya Nakai

IPC: H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/08 ,  H01S3/091

CPC classification number: H01S3/0941 ,  H01S3/0602 ,  H01S3/0612 ,  H01S3/0625 ,  H01S3/067 ,  H01S3/094084

Abstract: A high-output, single fundamental transverse mode solid state laser is disclosed which uses a semiconductor laser array as an excitation light source. The solid state laser comprises: a laser element which includes a core containing an element added as a laser medium, a cladding containing no such laser medium element, and reflecting mirrors coated over the cladding surface for repeatedly reflecting incident excitation light so that it may repeatedly pass through the core; an excitation light source formed by semi-conductor laser or light emitting diode array; means for guiding the excitation light from the excitation light source to one side of the laser element for incidence thereto; and a resonator for the oscillation of the solid state laser.

Abstract translation: 公开了使用半导体激光器阵列作为激发光源的高输出单基本横模固态激光器。 固体激光器包括：激光元件，其包括含有作为激光介质添加的元件的芯，不包含这种激光介质元件的包层，以及涂覆在包覆表面上的反射镜，用于反复反射入射激发光，使得其可以重复 通过核心; 由半导体激光器或发光二极管阵列形成的激发光源; 用于将来自激发光源的激发光引导到激光元件的一侧入射到其上的装置; 以及用于固态激光器的振荡的谐振器。

公开(公告)号：US4987376A

公开(公告)日：1991-01-22

申请号：US274320

申请日：1988-11-18

Applicant: John L. Hughes

Inventor： John L. Hughes

IPC: H01S3/04 ,  H01S3/042 ,  H01S3/06 ,  H01S3/091 ,  H01S3/23 ,  H01S3/30

CPC classification number: H01S3/23 ,  H01S3/042 ,  H01S3/091 ,  H01S3/305 ,  H01S3/0071 ,  H01S3/025 ,  H01S3/0405 ,  H01S3/0606 ,  H01S3/0625 ,  H01S3/115 ,  H01S3/2325

Abstract: A compact, powerful, single slab laser oscillator-amplifier system immersed in a high pressure gas which acts as a Raman shifting medium to shift the oscillator output wavelengths from the 1060-3000 nm range to the 1100-14000 nm range. The Raman shifting gas is conained within the casing (29) which also encloses a laser oscillator defined along the long axis of the slab laser medium (1) between dielectric mirror (2) and partially reflecting mirror (3). An electro-optic switch (7) is provided and slab (1) is pumped via a pump light source (22) while being cooled by Peltier stack (26). The slab also includes dielectric mirror (12) and anti-reflection coating (13) which act in conjunction with the slab laser medium (1) and the mirrored substrate (10) to form the amplifier portion of the system. Light passed from the oscillator through prism (4) is reflected by bevelled portion (9) of mirror (10) and directed to slab (1) where it is amplified and reflected by mirror (12). During successive reflections between slab (1) and mirror (10) a Raman shifted beam is generated and is emitted via collimator (19).

Abstract translation: 一个紧凑，功能强大的单板激光振荡放大器系统，浸入高压气体中，作为拉曼移位介质，将振荡器输出波长从1060-3000 nm范围移至1100-14000 nm范围。 拉曼移动气体被套在外壳（29）内，该外壳还包围沿着平板激光介质（1）的长轴限定在介质反射镜（2）和部分反射镜（3）之间的激光振荡器。 提供电光开关（7），并且通过泵浦光源（22）泵送板坯（1），同时由珀尔帖堆（26）冷却。 平板还包括与平板激光介质（1）和镜像基板（10）结合起来形成系统的放大器部分的电介质反射镜（12）和防反射涂层（13）。 从振荡器通过棱镜（4）的光由反射镜（10）的倾斜部分（9）反射并被引导到板坯（1），在该板坯被放大并由反射镜（12）反射。 在平板（1）和反射镜（10）之间的连续反射期间，产生拉曼偏移光束并通过准直器（19）发射。