公开(公告)号：WO1992014287A1

公开(公告)日：1992-08-20

申请号：PCT/US1992001139

申请日：1992-02-10

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： MASSACHUSETTS INSTITUTE OF TECHNOLOGY ,  MOORADIAN, Aram

IPC: H01S03/09

CPC classification number: H01S5/02423 ,  H01S3/0933 ,  H01S3/094084 ,  H01S3/0941 ,  H01S3/106 ,  H01S5/04 ,  H01S5/041 ,  H01S5/14

Abstract: An external cavity semiconductor laser system (100) is disclosed wherein multiple segments of semiconductor material are excited with an array of pump sources (20). In one embodiment, a laser beam is reflected in a pattern to pass through multiple excited segments on a wafer of semiconductor material (12). On another embodiment, a series of wafers disposed in a laser cavity are excited. This pumping system spreads out the thermal load while providing a high power, high quality, laser beam.

公开(公告)号：WO1987005161A1

公开(公告)日：1987-08-27

申请号：PCT/US1987000301

申请日：1987-02-13

Applicant: HILL, Alan, E.

IPC: H01S03/09

CPC classification number: H05B41/34 ,  H01S3/097

Abstract: A control circuit for a laser system having a first and a second power supply (10, 26) connected in parallel. A mode selector (50) is available to the laser operator to change the operational mode of the laser system from continuous to pulse mode or vice versa, and any combination of the modes. In the pulse mode, a series of short-time voltage pulses is superimposed on a low power level laser mode using the circuit control characteristic of the thyratron tube (36) to sharply increase the laser output for the duration of the individual pulses.

公开(公告)号：WO1994019846A1

公开(公告)日：1994-09-01

申请号：PCT/AU1994000081

申请日：1994-02-23

Applicant: ELECTRO OPTIC SYSTEMS PTY. LIMITED ,  GREENE, Benny, Allan

Inventor： ELECTRO OPTIC SYSTEMS PTY. LIMITED

IPC: H01S03/09

CPC classification number: H01S3/102 ,  H01S3/0912 ,  H01S3/092 ,  H01S3/10069 ,  H01S3/1022 ,  H01S3/1312 ,  H01S3/1608 ,  H01S3/17

Abstract: A laser assembly includes a lasing medium (12), associated reflector components (14, 16) defining a resonance cavity, and means (16) for outputting laser pulses therefrom. Means (18) is provided to pump the lasing medium with pulses of predetermined energy. There is a pumping circuit (20) for activating the pump means, and control means (22, 34, 35) associated with said pumping circuit for determining the energy of the pumping pulses.

Abstract translation: 激光组件包括激光介质（12），限定谐振腔的相关联的反射器部件（14,16）和用于从其中输出激光脉冲的装置（16）。 提供装置（18）以使激光介质以预定能量的脉冲泵送。 存在用于启动泵装置的泵送电路（20）和与所述泵送电路相关联的控制装置（22,34,35），用于确定泵送脉冲的能量。

公开(公告)号：WO1991019337A1

公开(公告)日：1991-12-12

申请号：PCT/DE1991000418

申请日：1991-05-21

Applicant: WEIMEL, Erich

IPC: H01S03/09

CPC classification number: A61F9/008 ,  A61F9/00821 ,  H01S3/09705 ,  H02J7/34

Abstract: Described is a laser system comprising a laser (10), which can be switched between at least two power levels, and a power supply (1 + 2) for the laser which is connected up to the mains supply which applies the input voltage. The invention is characterized by the fact that the laser power supply has a distributing unit (1) the input terminal of which is connected to the mains voltage and which is connected to a laser power supply unit (2) and to a charging unit (4) for an accumulator unit (5) in such a way that, while the laser is being operated at low power, the charging unit is also powered, in addition to the laser power supply unit, from the mains, and that, while laser is being operated at high power, the output terminal of the accumulator unit is connected to the laser power supply unit.

公开(公告)号：WO1990004866A1

公开(公告)日：1990-05-03

申请号：PCT/US1989000690

申请日：1989-02-24

Applicant: LEITNER, GREENE & CHRISTENSEN

Inventor： LEITNER, GREENE & CHRISTENSEN ,  STOICHEFF, Boris, P. ,  EFTHIMIOPOULOS, Thomas

IPC: H01S03/09

CPC classification number: H01S3/0979 ,  H01S3/225

Abstract: A method and apparatus for generating an inverted population in a gas are provided. Gas is excited at one pressure, so as to give a portion of the gas the energy of a higher electronic state. The gas is then expanded to a lower pressure, so as to concentrate that portion of the gas into a reduced number of energy levels in the higher electronic state. This concentrated population should then produce an inverted population relative to a lower electronic state. Inverted populations can then be used for stimulating emission, in a variety of laser devices, or in an amplifier. A lower curve (1) represents the ground state of energy and a middle curve (3) represents the first excited electronic state energy; an upper curve (5) represents the upper electronic energy states. To generate a population inversion unexcited atoms in the flat portion (13) are excited into flat portion (15) or the upper flat portions (17).

公开(公告)号：WO1997025759A1

公开(公告)日：1997-07-17

申请号：PCT/RU1997000003

申请日：1997-01-05

Applicant: LAZHINTSEV, Boris Vasilievich ,  NOR-AREVYAN, Vladimir Andreevich

IPC: H01S03/09

CPC classification number: H01S3/097

Abstract: The invention is applied to N2, CO2, eximer and other lasers and can be used in any installation based on volumetric self-sustained discharge. The invention facilitates the formation of volumetric self-sustained discharge where there is significant non-homogeneity in the density of gas mixtures and a high pulse repetition rate of volumetric self-sustained discharge. The system comprises at least two electrodes (1, 2) made from separate plates (5, 6). Each plate of the first (1) and second (2) electrodes is electrically connected to two other plates (5, 6), through spark (9) gaps, to the plate (5, 6) proximate to its own electrode, and through its separate section (3) of the container tank, to the plate (5, 6) of the other electrode (1, 2) lying on the same plane. In any of the electrically connected plate pairs, one of the plates (5) is linked, through a stabilising inductance (7, 10), with the common collection bar (8, 11) of its own electrode (1, 2), while the other (6) is not connected to the common collection bar (8, 11). Between all the plates (5, 6) there are dielectric elements forming a gas flow with a velocity route perpendicular to the working edge of the plates (5, 6).

Abstract translation: 本发明适用于N2，CO2，Eximer等激光器，可用于任何基于体积自持放电的安装。 本发明有助于体积自维持放电的形成，其中气体混合物的密度存在显着的非均匀性和体积自维持放电的高脉冲重复率。 该系统包括由分离的板（5,6）制成的至少两个电极（1,2）。 第一（1）和第二（2）电极的每个板通过火花（9）间隙电连接到另外两个板（5,6）到靠近其自身电极的板（5,6），并通过 其容器罐的分离部分（3）连接到位于同一平面上的另一电极（1,2）的板（5,6）。 在任何电连接的板对中，其中一个板（5）通过稳定电感（7,10）与其自身电极（1,2）的公共收集棒（8,11）相连，同时 另一个（6）未连接到公共收集条（8,11）。 在所有板（5,6）之间，存在形成气流的电介质元件，其速度路径垂直于板（5,6）的工作边缘。

公开(公告)号：WO1997007574A1

公开(公告)日：1997-02-27

申请号：PCT/GB1996001811

申请日：1996-07-30

Applicant: BRITISH NUCLEAR FUELS PLC ,  HARTLEY, John, Raymond

Inventor： BRITISH NUCLEAR FUELS PLC

IPC: H01S03/09

CPC classification number: H01S3/0903

Abstract: In a free electron laser system with energy recovery, the system having an electron gun (110) to supply a beam of electrons; a wriggler array (114) to supply a spatially alternating magnetic field to the electron beam whereby a microwave beam (118) is generated; separating means (115) to spatially separate the microwave beam and the electron beam emerging from the wriggler array; electron collection means to receive the separated electron beam; and a high voltage, low current supply (122) and a low voltage, high current supply (124) connected in series to supply the gun (110); the high voltage supply also being connected between the electron collection means (120) and the gun (110); any instabilities are sensed by sensing the current through the high voltage supply (122); comparing the sensed current with a preset value; and disconnecting the EHT supply (122) from the gun (110) when the preset value is exceeded.

Abstract translation: 在具有能量回收的自由电子激光系统中，该系统具有供给电子束的电子枪（110） 用于向电子束提供空间交变的磁场的扭矩阵列（114），从而产生微波波束（118）; 分离装置（115），以空间地分离微波束和从扭矩阵列出射的电子束; 电子收集装置，用于接收分离的电子束; 以及串联连接以供应枪（110）的高电压，低电流源（122）和低电压，高电流源（124）; 高压电源也连接在电子收集装置（120）和枪（110）之间; 通过感测通过高压电源（122）的电流来感测任何不稳定性; 将感测的电流与预设值进行比较; 并且当超过预设值时，从喷枪（110）断开EHT电源（122）。

公开(公告)号：WO1995026584A1

公开(公告)日：1995-10-05

申请号：PCT/US1994003228

申请日：1994-03-28

Applicant: UNITED STATES DEPARTMENT OF ENERGY

Inventor： UNITED STATES DEPARTMENT OF ENERGY ,  PAGE, Ralph, H.

IPC: H01S03/09

CPC classification number: B01D59/34

Abstract: In an AVLIS process, Zr is selectively removed from natural zirconium by a three-step photoionization wherein Zr atoms are irradiated by a laser beam having a wavelength lambda 1, selectively raising Zr atoms to an odd-parity E1 energy level in the range of 16000-19000 cm , are irradiated by a laser beam having a wavelength lambda 2 to raise the atoms from an E1 level to an even-parity E2 energy level in the range of 35000-37000 cm , and are irradiated by a laser beam having a wavelength lambda 3 to cause a resonant transition of atoms from an E2 level to an autoionizing level above 53506 cm . lambda 3 wavelengths of 5607, 6511 or 5756 ANGSTROM will excite a zirconium atom from an E2 energy state of 36344 cm to an autoionizing level; a lambda 3 wavelength of 5666 ANGSTROM will cause an autoionizing transition from an E2 level of 36068 cm ; and a lambda 3 wavelength of 5662 ANGSTROM will cause an ionizing resonance of an atom at an E2 level of 35904 cm .

Abstract translation: 在AVLIS工艺中，通过三步光电离选择性地从天然锆中除去Zr，其中Zr原子被波长为λ1的激光束照射，选择性地将91原子升高到奇数奇偶校验E1能量 在16000-19000cm -1范围内的电平由波长λ2的激光束照射，以将原子从E1电平升高到35000-37000cm -1的范围内的偶校验E2能级， -1>，并且由波长为λ3的激光束照射以使原子从E2水平的共振转变到高于53506cm -1的自动化水平。 5603,65311或5756的λ3波长ANGSTROM将从36344cm -1的E2能量状态激发锆原子至自动化水平; 5666 ANGSTROM的λ3波长将导致从36068cm -1的E2水平的自动电离转变; 并且5662 ANGSTROM的λ3波长将导致E2水平为35904cm -1的原子的电离共振。

公开(公告)号：WO1993010584A1

公开(公告)日：1993-05-27

申请号：PCT/US1992009966

申请日：1992-11-18

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  DOLEZAL, Franklin, A. ,  GREGOIRE, Daniel, J. ,  HARVEY, Robin, J.

IPC: H01S03/09

CPC classification number: H01S3/0903 ,  H01P7/06

Abstract: A waveguide filter (22, 24) is incorporated into a cavity resonator (20) for a free-electron laser or the like by coating a material layer (24) on the inner peripheral surface of a hollow waveguide member (22). A high pass filter configuration is provided when the conductivity of the material layer (24) is higher than that of the waveguide member (22), such that electromagnetic signals having wavelengths longer than the skin depth of the material layer (24) pass into and are affected by the lower conductivity waveguide member (22). Reversing the conductivities produces a low pass filter configuration in which signals having wavelengths shorter than the skin depth are affected by the material layer (24). A bandpass filter configuration is provided by adding an additional material layer (32) of low conductivity to a high pass filter, whereas a band exclusion filter configuration is produced by adding an additional material layer (32) of high conductivity to a low pass filter.

公开(公告)号：WO1998021788A1

公开(公告)日：1998-05-22

申请号：PCT/US1997020131

申请日：1997-11-06

Applicant: TRUSTEES OF DARTMOUTH COLLEGE

Inventor： TRUSTEES OF DARTMOUTH COLLEGE ,  WALSH, John, E.

IPC: H01S03/09

CPC classification number: H01S3/0903

Abstract: Free electron laser apparatus, for producing coherent electromagnetic radiation within a spectral range extending from millimeter to visible wavelenghts, includes elements for generating an electron beam (14) and for directing the beam to move over the surface of a diffraction grating (16) thereby producing electromagnetic radiation. Optical or quasi-optical elements confine the electromagnetic radiation, including bound surface mode radiation, to generate feedback, resulting in stimulated, coherent emission. Methods are disclosed for increasing the electron beam current above a certain value so as to provide sufficient feedback of the electromagnetic radiation for producing stimulated, coherent emission.

Abstract translation: 用于在从毫米延伸到可见波长的光谱范围内产生相干电磁辐射的自由电子激光装置包括用于产生电子束（14）并用于引导光束在衍射光栅（16）的表面上移动的元件，从而产生 电磁辐射。 光学或准光学元件限制电磁辐射，包括结合的表面模式辐射，以产生反馈，从而产生受激发的相干发射。 公开了用于将电子束电流增加到高于某一值的方法，以便提供足够的电磁辐射反馈以产生受激发的相干发射。