公开(公告)号：WO1989006872A1

公开(公告)日：1989-07-27

申请号：PCT/DE1989000024

申请日：1989-01-19

申请人： SIEMENS AKTIENGESELLSCHAFT ,  FRITZSCHE, Helmut ,  KRUEGER, Hans

发明人： SIEMENS AKTIENGESELLSCHAFT

IPC分类号： H01S03/098

CPC分类号： H01S3/08036 ,  H01S3/08059

摘要： In a gas laser (1) with incorporated mirrors (2, 3), two longitudinal modes of the laser oscillation whose planes of polarization are mutually perpendicular are excited during operation. The angular position of the planes of polarization is stabilized by means of an optically birefringent element (5) arranged in the optical path in the optical resonator (2,3).

摘要翻译： 在具有并入的反射镜（2,3）的气体激光器（1）中，激光振荡的两个纵向模式的极化相互垂直，在操作期间被激发。 通过布置在光学谐振器（2,3）中的光路中的光学双折射元件（5）来稳定偏振平面的角度位置。

公开(公告)号：WO1994010729A1

公开(公告)日：1994-05-11

申请号：PCT/GB1992002026

申请日：1992-11-03

申请人： BRITISH TECHNOLOGY GROUP LTD. ,  SIBBETT, Wilson

发明人： BRITISH TECHNOLOGY GROUP LTD.

IPC分类号： H01S03/098

CPC分类号： H01S3/1112 ,  H01S3/0805 ,  H01S3/0811 ,  H01S3/09408 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/109

摘要： A laser comprises a pump laser (202, 204, 206) for generating a pump laser beam, and a main laser (208, 210) for generating a main laser beam and arranged to be pumped by the pump laser beam. Various measures are adopted to enable the initiation and maintenance of self-mode-locking of the main laser beam even at low threshold pump laser powers. A device for initiating mode-locking of the main laser beam is also disclosed.

摘要翻译： 激光器包括用于产生泵激光束的泵浦激光器（202,204,206）和用于产生主激光束并被布置成被泵激光束泵浦的主激光器（208,210）。 采用各种措施，即使在低阈值泵浦激光功率下，也能启动和维持主激光束的自锁模式。 还公开了用于启动主激光束的锁模的装置。

公开(公告)号：WO1993014541A1

公开(公告)日：1993-07-22

申请号：PCT/US1993000337

申请日：1993-01-21

申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

发明人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA ,  MILLER, John, L. ,  HACKEL, Lloyd, A. ,  DANE, Clifford, B. ,  ZAPATA, Luis, E.

IPC分类号： H01S03/098

CPC分类号： H01S3/235 ,  H01S3/025 ,  H01S3/06 ,  H01S3/08095 ,  H01S3/0931

摘要： A regenerative laser amplifier comprises a gain medium (100) and source of pump energy (501-504) coupled with the gain medium (100); a Pockels cell (103), which rotates an incident beam in response to application of a control signal; an optical relay system defining a first relay plane near the gain medium (100) and a second relay plane near the rotator (103); and a plurality of reflectors (111-117) configured to define an optical path through the gain medium (100), optical relay (101-102) and Pockels cell (103). An input coupler and an output coupler are provided, implemented by a single polarizer (106). A control circuit (135) coupled to the Pockels cell (103).

公开(公告)号：WO1995005020A1

公开(公告)日：1995-02-16

申请号：PCT/IB1994000231

申请日：1994-08-02

申请人： PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB ,  PENNINGS, Engelbertus, Caspar, Maria ,  VAN ROIJEN, Raymond

发明人： PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB

IPC分类号： H01S03/098

CPC分类号： H01S5/1071 ,  G02B6/2813

摘要： A multimode imaging component provided with a rectangular waveguide (14') having two ends (15, 19) is described. To avoid unwanted reflections of radiation in the waveguide, the surfaces (17, 21) between the windows (16, 18, 20, 22) at the ends are provided with means for reducing reflection, for example, anti-reflection coatings (24, 25). When such a multimode imaging component is used as a coupler in a ring laser, the radiation spectrum of the ring laser will not comprise unwanted spectral components.

摘要翻译： 描述了具有两端（15,19）的矩形波导（14'）的多模成像部件。 为了避免波导中的辐射的不期望的反射，在端部处的窗口（16,18,20,22）之间的表面（17,21）设置有用于减少反射的装置，例如抗反射涂层（24， 25）。 当这种多模式成像部件用作环形激光器中的耦合器时，环形激光器的辐射光谱将不包含不期望的光谱分量。

公开(公告)号：WO1988006358A1

公开(公告)日：1988-08-25

申请号：PCT/AU1988000040

申请日：1988-02-11

申请人： MACQUARIE UNIVERSITY ,  PIPER, James, Austin ,  AINSWORTH, Mark, David

发明人： MACQUARIE UNIVERSITY

IPC分类号： H01S03/098

CPC分类号： H01S3/10092 ,  H01S3/094034

摘要： A wavelength locked pulsed dye laser system. The system includes a low-power continuous wave He-Ne laser (11) disposed to inject continuous wave, single wavelength, laser light emitted therefrom into the optical cavity (12) of a pulsed dye laser whereby the wavelength of pulsed laser light emitted from the dye laser is locked at the single wavelength (632.8nm) of the He-Ne laser light. Transverse pump beam B1 is from a copper vapour laser (13) and is line-focussed by cylindrical lens L1 onto dye cell D1.

摘要翻译： 波长锁定脉冲染料激光系统。 该系统包括一个低功率连续波He-Ne激光器（11），用于将从其发射的连续波，单波长的激光注入到脉冲染料激光器的光腔（12）中，从而使脉冲激光的波长从 染料激光器被锁定在He-Ne激光的单波长（632.8nm）处。 横向泵浦光束B1来自铜蒸汽激光器（13），并被柱面透镜L1线聚焦到染料单元D1上。

公开(公告)号：WO1996006471A1

公开(公告)日：1996-02-29

申请号：PCT/GB1995001996

申请日：1995-08-22

申请人： BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY ,  SMITH, Kevin ,  PATACA, Daniel, Moutinho ,  DE LACERDA ROCHA, Monica

发明人： BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

IPC分类号： H01S03/098

CPC分类号： H01S3/067 ,  H01S3/0675 ,  H01S3/106 ,  H01S3/1109 ,  H01S3/1112 ,  H01S3/1613 ,  H01S2301/085

摘要： An optical pulse generator comprises a FM mode locked laser that is configured to produce dark optical pulses. The laser comprises a cavity (M1, M2) and a Pr doped fluoride fibre (3) pumped by a source (1). The output is mode locked by a phase modulator comprising a silica fibre (2) in the cavity that receives modulating pulses from a DFB laser (7), so as to alter the refractive index of the fibre (2) and cross phase modulate the laser light. The phase modulation combines with the dispersive effect of the fibre (3) to produce dark output pulses.

摘要翻译： 光脉冲发生器包括被配置为产生暗光脉冲的FM模式锁定激光器。 激光器包括由源（1）泵浦的空腔（M1，M2）和掺杂掺杂的Pr 3+纤维（3）。 输出由包括在空腔中的二氧化硅光纤（2）的相位调制器锁模，其接收来自DFB激光器（7）的调制脉冲，以便改变光纤（2）的折射率并交叉相位调制激光器 光。 相位调制与光纤（3）的色散效应相结合，产生暗输出脉冲。

公开(公告)号：WO1995031023A1

公开(公告)日：1995-11-16

申请号：PCT/US1995005666

申请日：1995-05-05

申请人： MASSACHUSETTS INSTITUTE OF TECHNOLOGY

发明人： MASSACHUSETTS INSTITUTE OF TECHNOLOGY ,  RAMASWAMY, Malini ,  FUJIMOTO, James, G.

IPC分类号： H01S03/098

CPC分类号： H01S3/1112 ,  H01S3/08059 ,  H01S3/0811 ,  H01S3/0815 ,  H01S3/0816 ,  H01S3/0943 ,  H01S3/1625

摘要： A laser resonant cavity (10) defined by a set of reflective end elements (26) positioned to together form a closed optical path, a gain medium (12) positioned along the closed optical path, means (14) for exciting the gain medium to produce a laser beam within the cavity, at least one focusing element (24) positioned within the cavity in optical alignement with the gain medium, and a prism (26) positioned as one of the end elements of the cavity and providing angular dispersion of the laser beam. The prism, end elements, gain medium, and focusing elements are positioned with respect to each other such that the resonant cavity supports a coexistence of several monochromatic laser modes, each mode having a distinct propagation axis. Propagation axes of modes having relatively longer wavelengths traverse more of the prism than propagation axes of modes having relatively shorter wavelengths, resulting in the addition of a negative component to the group velocity dispersion of the laser cavity. The invention provides group velocity dispersion compensation using one or more prismatic end elements without the need for any additional intracavity elements whose sole purpose is dispersion compensation.

摘要翻译： 由一组位于一起形成封闭光路的一组反射端元件（26）限定的激光谐振腔（10），沿封闭光路定位的增益介质（12），用于将增益介质激励到 在空腔内产生激光束，与增益介质光学对准地定位在腔体内的至少一个聚焦元件（24）和定位成腔体的一个端部元件的棱镜（26），并提供 激光束。 棱镜，端元件，增益介质和聚焦元件相对于彼此定位，使得谐振腔支持若干单色激光模式的共存，每个模式具有不同的传播轴。 具有相对较长波长的模式的传播轴比具有相对更短波长的模式的传播轴越过棱镜，导致向激光腔的群速度色散添加负分量。 本发明使用一个或多个棱柱端元件提供组速度色散补偿，而不需要任何额外的腔内元件，其唯一目的是色散补偿。

公开(公告)号：WO1994015387A1

公开(公告)日：1994-07-07

申请号：PCT/US1993012731

申请日：1993-12-22

申请人： UNIVERSITY OF NEW MEXICO

发明人： UNIVERSITY OF NEW MEXICO ,  YAN, Chi ,  REDDY, Kalidev'Apura, P., J. ,  JAIN, Ravinder, K. ,  McINERNEY, John, G.

IPC分类号： H01S03/098

CPC分类号： H01S5/06216 ,  H01S5/06223 ,  H01S5/0658

摘要： Filtered regenerative feedback is used to modulate a laser or other source of electromagnetic radiation to generate optical pulses whose amplitudes and repetition rates are continuously tunable. The technique involves converting, by means of a photodetector (9), a portion of the radiation produced by a modulatable electromagnetic radiation source (1, 7) into a control signal, filtering the control signal through a bandpass filter (3, 10), and modulating the modulatable radiation source with the filtered control signal to produce pulses. This technique is in principle applicable to any source of electromagnetic radiation and is especially effective for semiconductor diode lasers.

摘要翻译： 过滤的再生反馈用于调制激光或其他电磁辐射源，以产生振幅和重复率连续可调的光脉冲。 该技术涉及通过光电检测器（9）将由可调制电磁辐射源（1,7）产生的辐射的一部分转换成控制信号，通过带通滤波器（3,10）对控制信号进行滤波， 并用滤波的控制信号调制可调制的辐射源，以产生脉冲。 该技术原则上适用于任何电磁辐射源，对半导体二极管激光器尤为有效。

公开(公告)号：WO1997032373A1

公开(公告)日：1997-09-04

申请号：PCT/EP1997000814

申请日：1997-02-20

申请人： AGFA-GEVAERT AKTIENGESELLSCHAFT ,  KAPPELER, Franz

发明人： AGFA-GEVAERT AKTIENGESELLSCHAFT

IPC分类号： H01S03/098

CPC分类号： H01S5/14 ,  H01S3/082 ,  H01S5/0608 ,  H01S5/06209 ,  H01S5/06213 ,  H01S5/065 ,  H01S5/0652 ,  H01S5/0656 ,  H01S5/06817 ,  H01S5/146

摘要： The invention concerns a method of operating a laser diode (2) producing a beam (9) whose intensity is controlled by a control signal and which is directed along a first beam path (10) at the target surface (5), stray reflections from the target surface (5) which are unstable with respect to the diode (2) in time and/or space acting on the diode (2). An element (19, 28, 31, 37, 38) which is stable in time and with respect to the diode (2) in space is used to feed part of the light emitted by the diode back along a second beam path (11) to the active zone (42) of the diode (2) so that the diode (2) is kept in a state of coherence collapse.

摘要翻译： 本发明涉及一种用于操作的激光二极管（2），其激光束（9）被引导通过一调整的手段相对于它的强度和通过第一光路（10）调整到暴露区域（5），相对于所述激光二极管（2 ）在时间和/或空间干扰反射（其中用作反射器可用面积5）（在激光二极管2）的行为不稳定。 通过的时间和相对于所述激光二极管（2）在空间上稳定的元件（19，28，31，37，38）的装置是的从激光二极管（2）漏出的光通过在所述有源区中的附加的第二光路（11）（42的部分 ）的激光二极管（2）的反馈，使得所述激光二极管（2）是在相干崩溃的操作状态。

公开(公告)号：WO1995010870A1

公开(公告)日：1995-04-20

申请号：PCT/GB1994002239

申请日：1994-10-11

申请人： BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY ,  LUCEK, Julian, Kazimierz ,  SMITH, Kevin

发明人： BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

IPC分类号： H01S03/098

CPC分类号： H01S3/1112 ,  G02F1/3517 ,  G02F1/3519 ,  G02F2002/006 ,  G02F2203/54 ,  H01S3/0057 ,  H01S3/06791 ,  H01S3/083 ,  H01S3/10092 ,  H01S5/0057 ,  H01S5/041 ,  H01S5/0608 ,  H01S5/50 ,  H04B10/50 ,  H04J14/08 ,  H04J14/083 ,  H04L7/0075 ,  H04L7/041

摘要： An optical pulse sequence is generated by applying a repetitive optical signal to an optical modulator connected in the laser cavity of a mode-locked laser. The pulse sequence in the laser cavity is then ouput. The repeat period of the repetitive optical signal is set to be equal to, or an integer multiple of, the cavity round-trip time. The laser is thereby driven to output pulses in bit positions corresponding to the non-zero pulses of the input repetitive optical signal. In one example, the output pulse sequence is used to control an optical switch to provide an OTDM programmable multiplexer using optical signals.

摘要翻译： 通过对连接在锁模激光器的激光腔中的光调制器应用重复的光信号来产生光脉冲序列。 然后激光腔中的脉冲序列输出。 重复光信号的重复周期被设置为等于空腔往返时间的整数倍。 因此激光器被驱动以对应于输入重复光信号的非零脉冲的比特位置输出脉冲。 在一个示例中，输出脉冲序列用于控制光开关以使用光信号提供OTDM可编程多路复用器。