公开(公告)号：US06603790B1

公开(公告)日：2003-08-05

申请号：US09511649

申请日：2000-02-22

Applicant: Hans Kodeda ,  Helmut Frowein ,  Claus Strowitzki ,  Alexander Hohla

Inventor： Hans Kodeda ,  Helmut Frowein ,  Claus Strowitzki ,  Alexander Hohla

IPC: H01S303

CPC classification number: H01S3/036 ,  H01S3/225

Abstract: A gas laser and a dedusting unit thereof are provided. The gas laser comprises a tube containing a gas mixture including a laser gas and preferably a buffer gas. The tube preferably comprises a cylindrical inner wall. A discharge unit is inserted into the tube and has two elongated electrodes defining an electrical gas discharge gap therebetween for providing an electric gas discharge between said electrodes to generate laser light. A circulation means is included in the tube for generating a gas flow within the tube that passes through the discharge gap. A dedusting unit is mounted along the inner cylindrical wall of the tube in such a manner that only a bypass flow which is a part of the gas flow within the tube passes through the dedusting unit.

Abstract translation: 提供气体激光器及其除尘单元。 气体激光器包括含有包括激光气体和优选缓冲气体的气体混合物的管。 管优选地包括圆柱形内壁。 放电单元插入管中并具有两个细长电极，在其间限定电气放电间隙，以在所述电极之间提供电气放电以产生激光。 管中包括循环装置，用于在管内产生通过放电间隙的气流。 沿着管的内圆筒壁安装除尘单元，使得只有作为管内气体的一部分的旁通流通过除尘单元。

公开(公告)号：US06466601B1

公开(公告)日：2002-10-15

申请号：US09834840

申请日：2001-04-13

Applicant: Xiaojiang J. Pan ,  Vladimir Kulgeyko

Inventor： Xiaojiang J. Pan ,  Vladimir Kulgeyko

IPC: H01S303

CPC classification number: H01S3/225 ,  H01S3/02 ,  H01S3/036 ,  H01S3/038 ,  H01S3/0385 ,  H01S3/041 ,  H01S3/097 ,  H01S3/0971 ,  H01S3/0975 ,  H01S3/104 ,  H01S3/22 ,  H01S3/2207

Abstract: A gas discharge modular laser with beam train isolation between laser chamber module and front and rear optics which define the laser resonant cavity. Beam train isolation units isolates the beam train from atmospheric air while permitting quick and easy removal of the laser chamber without disturbing the optics of the resonant cavity. In preferred embodiments, metal bellows units are bolted at only side so that the chamber module can be removed and replaced without unbolting the bellows unit.

Abstract translation: 一种气体放电模块激光器，其激光腔室模块与前后光学器件之间具有光束驱动隔离，其限定了激光谐振腔。 光束列车隔离单元将光束与大气隔离，同时允许快速且容易地去除激光室，而不会干扰谐振腔的光学器件。 在优选实施例中，金属波纹管单元仅在一侧螺栓连接，使得腔室模块可以被拆卸并且不拆卸波纹管单元而被更换。

公开(公告)号：US06798816B2

公开(公告)日：2004-09-28

申请号：US10277272

申请日：2002-10-21

Applicant: Anthony J. DeMaria ,  Vernon A. Seguin ,  Lanny Laughman

Inventor： Anthony J. DeMaria ,  Vernon A. Seguin ,  Lanny Laughman

IPC: H01S303

CPC classification number: H01S3/0315 ,  H01S3/08095 ,  H01S3/0813 ,  H01S3/2232

Abstract: A folded waveguide CO2 laser includes a plurality of waveguides arranged in a zigzag pattern with ends thereof overlapping. The laser includes a resonator having an axis extending through the plurality of waveguides. At least a portion of at least one of the waveguides has a uniform minimum width selected cooperative with the height of the waveguide and the laser wavelength such that the resonator can oscillate in only a single mode. At least a portion of one of the waveguides is tapered such that its width increases in one direction along the resonator axis. Tapering one or more of the waveguides provides that the total waveguide area and potential power output of the laser is greater than that of a zigzag arrangement of waveguides having the same total length waveguides each having a uniform width equal to the minimum width of the waveguide in the tapered waveguide arrangement.

Abstract translation: 折叠波导CO 2激光器包括以Z字形图案布置的多个波导，其端部重叠。 激光器包括具有延伸穿过多个波导的轴的谐振器。 至少一个波导的至少一部分具有与波导的高度和激光波长相配合的均匀的最小宽度，使得谐振器可以仅在单个模式下振荡。 波导中的一个的至少一部分是锥形的，使得其宽度沿着谐振器轴在一个方向上增加。 锥形一个或多个波导提供了激光器的总波导面积和潜在功率输出大于具有相同总长波导的波形的Z字形布置的波导的均匀布置，每个波导具有等于波导的最小宽度的均匀宽度 锥形波导装置。

公开(公告)号：US06466600B1

公开(公告)日：2002-10-15

申请号：US09285545

申请日：1999-04-02

Applicant: Michael Von Borstel

Inventor： Michael Von Borstel

IPC: H01S303

CPC classification number: H01S3/0305

Abstract: An HF-excited gas laser has a laser tube of ceramic material containing a laser gas, and the tube includes a chemical component which will preclude passage therethrough of secondary radiation of a wavelength within a proscribed range which would interact with the material of the laser tube to create defects therein. The chemical component to prevent damage to the laser tube may be provided as a layer on its inside surface which is essentially impermeable to and/or reflects the secondary radiation back into the lasing gas. Alternatively, the material of the laser tube may incorporate the chemical component, preferably over the portion of the wall adjacent its inner surface.

Abstract translation: HF激发气体激光器具有包含激光气体的陶瓷材料的激光管，并且该管包括一种化学成分，该化学成分将阻止在与被激光管材料相互作用的禁止范围内的波长的二次辐射 在其中创造缺陷。 防止损坏激光管的化学成分可以作为其内表面上的层提供，其基本上不可渗透和/或将次级辐射反射回到激光气体中。 或者，激光管的材料可以结合化学成分，优选地在邻近其内表面的壁的部分上。

公开(公告)号：US06711200B1

公开(公告)日：2004-03-23

申请号：US09656324

申请日：2000-09-06

Applicant: Axel Scherer ,  Oskar Painter

Inventor： Axel Scherer ,  Oskar Painter

IPC: H01S303

CPC classification number: G02B6/122 ,  B82Y20/00 ,  G02B6/1225 ,  G02B6/136 ,  H01S3/0602 ,  H01S3/0635 ,  H01S5/06256 ,  H01S5/1042 ,  H01S5/105 ,  H01S5/183 ,  H01S5/187

Abstract: Room temperature lasing from optically pumped single defect in a two-dimensional photonic bandgap crystal is illustrated. The high Q optical microcavities are formed by etching an array of air holes into a half wavelength thick multiquantum well waveguide. Defects in the two-dimensional photonic crystal or used to support highly localized optical modes with volumes ranging from 2 to 3 (&lgr;/2n)3. Lithographic tuning of the air hole radius and the lattice spacing is used to match the cavity wavelength to the quantum well gain peak, as well as to increase cavity Q. The defect lasers were pumped with 10-30 nsec pulse of 0.4-1 percent duty cycle. The threshold pump power was 1500 milliwatts. The confinement of the defect mode energy to a tiny volume and the enhancement of the spontaneous emission rate make the defect cavity an interesting device for low threshold, high spontaneous emission coupling factor lasers, and high modulation rate light emitting diodes. Optic structures formed from photonic crystals also hold promise due to the flexibility of their geometries. Lithographic methods may be employed to alter the photonic crystal geometry so as to tune device characteristics. The integration of densely packed photonic crystal waveguides, prisons, and light sources integrated on a single monolithic chip is made possible. Lithographically defined photonic crystal cavities may also find use in some material systems as an alternative to epitaxially grown mirrors, such as for long wavelengths vertical cavity surface emitting lasers (VCSEL) and GaN based devices.

Abstract translation: 示出了在二维光子带隙晶体中的光泵浦单缺陷的室温激光。 高Q光学微腔是通过将一组空气孔蚀刻成半波长厚的多量子阱波导形成的。 二维光子晶体中的缺陷或用于支持体积范围为2至3（λ/ 2n）3的高度局部化光学模式。 使用空气孔半径和晶格间距的光刻调谐来匹配腔体波长与量子阱增益峰值，以及增加空腔Q.缺陷激光器以0.4-1％的占空比的10-30 ns脉冲泵浦 周期。 阈值泵功率为1500毫瓦。 将缺陷模式能量限制到微小体积并增加自发发射速率使得缺陷腔成为低阈值，高自发发射耦合因子激光器和高调制率发光二极管的有意义的装置。 由光子晶体形成的光学结构由于其几何形状的灵活性而具有前景。 可以使用光刻方法来改变光子晶体的几何形状，以便调节器件的特性。 密集封装的光子晶体波导，监视器和集成在单个单片芯片上的光源的集成是可能的。 光刻晶体空穴也可用于某些材料系统中，作为外延生长反射镜的替代品，例如用于长波长垂直腔表面发射激光器（VCSEL）和基于GaN的器件。

公开(公告)号：US06700908B1

公开(公告)日：2004-03-02

申请号：US09598388

申请日：2000-06-21

Applicant: Claus Strowitzky

Inventor： Claus Strowitzky

IPC: H01S303

CPC classification number: H01S3/0977 ,  H01S3/0388 ,  H01S3/223 ,  H01S3/225

Abstract: The present invention is a device for avoiding sliding discharges in pre-ionization in a gas laser with corona discharge. The invention uses a pair of main electrodes provided in a closed gas discharge volume, and at least one pair of corona electrodes which are arranged in the immediate vicinity of the pair of main electrodes. The individual electrodes, which include a tube-like sheathing of dielectric material, are designed to be open on both ends and contain an electrically conducting rod, or core, introduced into the interior and projecting beyond the sheathing. The invention is distinguished by the provision that the material selection, the shaping of various elements associated with the gas discharge volume, or a combination of material selection and shaping is made in such a way that a specific capacitance per unit area is provided in the surface region on both ends of the sheathing is lower than the capacitance in the central region of the sheathing between its both ends. Some of the elements that may be altered as to material selection and/or shaping considerations include the sheathing surrounding the electrically conducting core, the dielectric insert body inserted between said sheathing and said electrically conducting core, and the electrically conducting core.

Abstract translation: 本发明是一种用于在具有电晕放电的气体激光器中避免预电离中的滑动放电的装置。 本发明使用设置在封闭气体放电容积中的一对主电极和布置在该对主电极附近的至少一对电晕电极。 包括电介体材料的管状护套的各个电极被设计成在两端开口并且包含引入到内部并突出超过护套的导电棒或芯。 本发明的区别在于，材料选择，与气体放电容积相关联的各种元件的成形或材料选择和成形的组合以这样的方式进行，使得在表面中提供每单位面积的比电容 护套两端的区域比护套两端的中心区域的电容低。 关于材料选择和/或成型考虑可以改变的一些元件包括围绕导电芯的护套，插入在所述护套和所述导电芯之间的电介质插入体以及导电芯。

公开(公告)号：US06643313B2

公开(公告)日：2003-11-04

申请号：US09849922

申请日：2001-05-04

Applicant: Donald P. Hutchinson

Inventor： Donald P. Hutchinson

IPC: H01S303

CPC classification number: H01S3/063 ,  H01S3/08095 ,  H01S3/081 ,  H01S3/2325

Abstract: A method for forming a folded laser and associated laser device includes providing a waveguide substrate, micromachining the waveguide substrate to form a folded waveguide structure including a plurality of intersecting folded waveguide paths, forming a single fold mirror having a plurality of facets which bound all ends of said waveguide paths except those reserved for resonator mirrors, and disposing a pair of resonator mirrors on opposite sides of the waveguide to form a lasing cavity. A lasing material is provided in the lasing cavity. The laser can be sealed by disposing a top on the waveguide substrate. The laser can include a re-entrant cavity, where the waveguide substrate is disposed therein, the re-entrant cavity including the single fold mirror.

Abstract translation: 一种用于形成折叠激光器和相关联的激光器件的方法包括：提供波导基片，微加工波导基片以形成包括多个相交的折叠波导路径的折叠波导结构，形成具有多个小面的折叠反射镜， 的所述波导路径，除了为谐振器反射镜预留的波导路径，并且在波导的相对侧上设置一对谐振镜，以形成激光腔。 在激光腔中设有激光材料。 可以通过在波导基板上设置顶部来密封激光器。 激光器可以包括入射腔，其中波导衬底设置在其中，重入腔包括单折射镜。

公开(公告)号：US06208676B1

公开(公告)日：2001-03-27

申请号：US09340996

申请日：1999-06-28

Applicant: Hitoshi Hongu

Inventor： Hitoshi Hongu

IPC: H01S303

CPC classification number: H01S3/134 ,  H01S3/0346 ,  H01S3/036 ,  H01S3/073

Abstract: The gas laser oscillator having metal housings disposed near internal mirrors of the resonator for covering, for example, the external of connecting tubes partially or totally, means for detecting the micro discharge current flowing inside of the connecting tubes near the internal mirrors of the resonator, and a control circuit for controlling energy to be supplied into discharge tubes by comparing output signals output from the means for detecting the micro discharge current with reference signals. The gas laser oscillator prevents the micro discharge current from flowing in laser gas inside of the connecting tubes, thereby preventing degradation of a total reflection mirror and a partial reflection mirror defining the internal mirrors of the resonator.

Abstract translation: 气体激光振荡器具有设置在谐振器的内反射镜附近的金属壳体，其部分或全部覆盖例如连接管的外部，用于检测在谐振器的内部反射镜附近的连接管内部流过的微放电电流的装置， 以及控制电路，用于通过比较从用于检测微放电电流的装置输出的输出信号与参考信号来控制供给到放电管中的能量。 气体激光振荡器防止微型放电电流在连接管内部的激光气体中流动，从而防止全反射镜和限定谐振器的内反射镜的部分反射镜的劣化。

公开(公告)号：US06798815B2

公开(公告)日：2004-09-28

申请号：US10131335

申请日：2002-04-24

Applicant: Berthold Schmidt ,  Susanne Pawlik ,  Norbert Lichtenstein

Inventor： Berthold Schmidt ,  Susanne Pawlik ,  Norbert Lichtenstein

IPC: H01S303

CPC classification number: H01S5/22 ,  H01S5/0202 ,  H01S5/10 ,  H01S5/1064 ,  H01S5/166 ,  H01S5/2036 ,  H01S5/204

Abstract: Semiconductor laser diodes, particularly high power ridge waveguide laser diodes, are often used in opto-electronics as so-called pump laser diodes for fiber amplifiers in optical communication lines. To provide the desired high power output and stability of such a laser diode and avoid degradation during use, the present invention concerns an improved design of such a device, the improvement in particular consisting of novel design of the ridge waveguide of the laser. Essentially the novel design consists in a segmented ridge waveguide having at least two straight segments, i.e. segments with constant, but different cross sections or widths, and at least one flared segment connecting the two different straight segments. A further improvement can be achieved by combining this approach with a laser diode design termed “unpumped end sections” and described in copending U.S. patent application Ser. No. 09/852,994, entitled “High Power Semiconductor Laser Diode”. Preferable for an advantageous manufacturing process is a segmented ridge waveguide design with three straight segments, at least two of them differing in cross section or width, and two flared segments connecting the differing straight segments. This latter design results in a wafer pattern of identical and identically oriented laser diode structures, thus allowing the use of standard manufacturing processes.

Abstract translation: 半导体激光二极管，特别是高功率脊波导激光二极管，通常用作光电子学中所谓的用于光通信线路中光纤放大器的泵激光二极管。 为了提供这种激光二极管的期望的高功率输出和稳定性并且避免在使用期间的劣化，本发明涉及这种器件的改进的设计，其改进特别地包括激光器的脊形波导的新颖设计。 本质上，新颖的设计包括具有至少两个直段，即具有恒定但不同横截面或宽度的段的分段脊波导，以及连接两个不同直段的至少一个扩口段。 可以通过将该方法与称为“未抽头端部分”的激光二极管设计相结合并在共同未决的美国专利申请序列号Ser。 题为“大功率半导体激光二极管”的No.09 / 852,994。 优选的制造过程优选是具有三个直段的分段脊波导设计，其中至少两个横截面或宽度不同，以及两个连接不同直段的扩口段。 后一种设计导致相同且相同方向的激光二极管结构的晶片图案，从而允许使用标准制造工艺。

公开(公告)号：US06782029B1

公开(公告)日：2004-08-24

申请号：US09510667

申请日：2000-02-22

Applicant: Claus Strowitzki

Inventor： Claus Strowitzki

IPC: H01S303

CPC classification number: H01S3/0346 ,  H01S3/225

Abstract: A dedusting unit for a laser optical element is provided. The dedusting unit comprises a high-voltage duct comprising a high-voltage conducting core having a first end and a second end and an insulator element disposed around the core. The first end of the core is connectable to a high voltage power supply and the second end of the core is electrically connected to a wire loop. The dedusting unit may be used in connection with a variety of gas lasers. In use, the dedusting unit is mounted to the laser tube so that the wire loop is disposed inside the gas laser tube in proximity to an optical element to be protected from dust. The dedusting unit is further mounted so that the wire loop is transverse to the resonating path of the laser light within the laser tube so that the resonating laser light may pass through the wire loop without being obstructed by the wire loop. A method for installing the dedusting unit to protect a laser optical element in a gas laser is also provided.

Abstract translation: 提供了一种用于激光光学元件的除尘单元。 除尘单元包括高压管道，其包括具有第一端和第二端的高压导电芯和设置在芯周围的绝缘体元件。 磁芯的第一端可连接到高压电源，并且磁芯的第二端电连接到电线回路。 除尘单元可以用于各种气体激光器。 在使用中，除尘单元安装到激光管，使得线环设置在气体激光管的内部，靠近防止灰尘的光学元件。 进一步安装除尘单元，使得导线环横穿激光管内的激光的谐振路径，使得谐振激光可以穿过线环而不被线环阻塞。 还提供了一种用于安装除尘单元以保护气体激光器中的激光光学元件的方法。