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51. 发明公开

EP1022824A3 Laser incorporating tunable grating for group velocity dispersion compensation 审中-公开
标题翻译：激光absimmbarem光栅群速度色散补偿
公开(公告)号：EP1022824A3
公开(公告)日：2002-02-06
申请号：EP00300220.1
申请日：2000-01-13
申请人： Agere Systems Optoelectronics Guardian Corporation
发明人： Collings, Brandon Christopher , Eggleton, Benjamin John , Greenberg Kosonski, Sandra , Lenz, Gadi , Spalter, Stefan Heinz
IPC分类号： H01S3/098 , H01S3/067
CPC分类号： H01S3/1112 , H01S3/0675 , H01S3/10076 , H01S3/1053 , H01S3/1055 , H01S3/108
摘要： In accordance with the invention, a laser includes a tunable grating incorporated within the laser cavity. The grating is configured to provide GVD at wavelengths far from the photonic bandgap thus providing GVD compensation and management of intracavity dispersion. The grating is operated in the transmission mode and is configured so that reflection from within the photonic bandgap does not significantly affect the lasing condition. The grating is tunable, permitting adjustment of the intracavity GVD. In a preferred embodiment, the grating is an apodized fiber Bragg grating within the cavity of a modelocked fiber laser. The GVD of the fiber grating can be tuned by axial strain.

52. 发明公开

EP1175716A1 DISPOSITIF ET PROCEDE PERMETTANT LE MODE-BLOCAGE D'UN LASER 有权
标题翻译： DEVICE AND METHOD FOR配对模式激光
公开(公告)号：EP1175716A1
公开(公告)日：2002-01-30
申请号：EP00926585.1
申请日：2000-05-03
申请人： Facultes Universitaires Notre-Dame de la Paix
发明人： PEREMANS, André , MANI, Alaa, Addin , THIRY, Paul
IPC分类号： H01S3/098
CPC分类号： H01S3/1112 , H01S3/109
摘要： The invention relates to a device for a laser blocked-mode, especially for a pulsed laser, comprising a cavity resonator (20) which is defined by a first mirror (1) and a second mirror (8), and fitted with an amplifying active laser medium (5) for the amplification of a beam of laser radiation of a fundamental frequency (φ1) and a solid, non-linear optic means (10) comprising at least said second mirror (8) for reversible conversion of the radiation of the fundamental frequency (φ1) into radiation of a harmonic frequency (φ2), whereby said non-linear optic means (10) has a reflection factor which increases with the intensity of the radiation of a fundamental frequency. The invention is characterized in that said device also comprises a solid intensity limiter (4) in the cavity resonator (20), whereby the transmission factor of the laser radiation decreases with the intensity of said radiation. The invention also relates to a method for a laser blocked-mode, especially for a pulsed laser, using said device.

53. 发明公开

EP1166403A1 VORRICHTUNG ZUR ERZEUGUNG KURZER IMPULSE DURCH PASSIVE MODENKOPPLUNG 有权
标题翻译：装置于产生短IMPULSE被动模式耦合
公开(公告)号：EP1166403A1
公开(公告)日：2002-01-02
申请号：EP00930991.5
申请日：2000-03-24
申请人： Forschungsverbund Berlin e.V.
发明人： GLAS, Peter , LEITNER, Martin
IPC分类号： H01S3/098 , G02F1/35
CPC分类号： H01S3/1112 , G02F1/3511 , G02F1/3526 , H01S3/0805 , H01S3/08059 , H01S3/1118
摘要： Conventional devices for producing very short laser pulses in which an optical medium as the laser source is arranged between two reflectors are provided with a reflector that is provided with semiconductor layers that absorb the incident laser beam depending on the intensity thereof. The aim of the invention is to provide such a device that is easy to produce and does not require a complicated adjustment. To this end, the optical non-linear reflector (2) consists of a refraction-controlled semiconductor layer (7) that has an intensity-depending refractive index and a highly refractive layer (8). A diaphragm (4) and a lens system that consists of at least two lenses (5, 6) is arranged in the beam path between the laser source (3) and the non-linear reflector (2). The distance (a) between the lens (6) and the refraction-controlled layer (7) of the non-linear refractor (2) is adjusted in such a manner that the resulting diameter (12) of the intensity distribution is larger for small intensities than the diameter of the diaphragm (4). The inventive device is easy to produce, can be integrated and easily adapted to different lasers. The inventive device can be used to compensate refractive effects since the refractive index increments for the refraction-controlled semiconductor layer (7) and the optical media (3, 5, 6) have opposite algebraic signs.

54. 发明公开

EP1161783A1 SATURABLE BRAGG REFLECTOR WITH INCREASED MODULATION DEPTH 审中-公开
标题翻译：饱和布喇格反射器中具有增加的MODULATION DEPTH
公开(公告)号：EP1161783A1
公开(公告)日：2001-12-12
申请号：EP00917919.3
申请日：2000-03-14
申请人： Spectra-Physics Lasers, Inc.
发明人： KAFKA, James, D. , SPENCE, David E.
IPC分类号： H01S3/098 , H01S3/113 , G02F1/35
CPC分类号： H01S3/1118 , G02F1/3523 , H01S3/113
摘要： A saturable Bragg reflector with increased modulation depth is used for mode-locking a laser system. The Bragg reflector includes multiple quantum-well-structures in non-adjacent layers of the quarter-wave stack.

55. 发明公开

EP1121734A1 MULTIWAVELENGTH ACTIVELY MODE-LOCKED EXTERNAL CAVITY SEMICONDUCTOR LASER 有权
标题翻译：多波长有源模式锁定外腔半导体激光器
公开(公告)号：EP1121734A1
公开(公告)日：2001-08-08
申请号：EP99969540.6
申请日：1999-09-20
申请人： Sarnoff Corporation
发明人： ABELES, Joseph, Hy
IPC分类号： H01S3/098
CPC分类号： H01S5/0657 , G02B6/4206 , G02B6/4215 , G02B6/4245 , G02B6/4248 , G02B6/4251 , G02B6/4271 , G02B6/4285 , H01S5/0222 , H01S5/02284 , H01S5/141 , H01S5/142 , H01S5/146 , H01S5/4062 , H01S5/4068 , H01S5/4087 , H01S5/50 , Y10T74/18656
摘要： A multiwavelength mode-locked MWML angled-stripe SOA laser that emits multiple discrete groups of wavelengths simultaneously in a short time interval, where each group is located at a wavelength suitable to wavelength division multiplexed optical transmission. Feedback (60, 70) and/or feedthrough optics (90) are combined with an angled-stripe SOA to provide different laser embodiments. The actively mode locked MWML laser emits individual spectral components at a plurality of wavelengths simultaneously. The optics are coupled to one or more angled-stripe SOA ports in reflective or optical ring resonator configurations to provide simultaneous feedback at the plurality of wavelengths and to provide substantially identical round-trip travel times and net gains within the lasing cavity for pulses at each of the plurality of wavelengths. A MWML laser so formed is particularly useful as a multiwavelength source for optical signal processing and transmission systems and can be placed in a hermetically sealed package.
摘要翻译：一种多波长锁模MWML成角度SOA SOA激光器，可在短时间间隔内同时发射多个离散波长组，其中每个组位于适合于波分复用光传输的波长。反馈（60,70）和/或馈通光学器件（90）与成角度的SOA结合以提供不同的激光器实施例。主动模式锁定的MWML激光器同时发射多个波长的单个光谱分量。光学器件耦合到反射式或光学环形谐振器配置中的一个或多个成角度的SOA端口，以在多个波长处提供同时反馈，并且在激光谐振腔内为每个脉冲提供基本相同的往返传播时间和净增益在多个波长中。这样形成的MWML激光器作为用于光信号处理和传输系统的多波长源特别有用，并且可以放置在密封封装中。

56. 发明公开

EP1119084A1 Laser oscillator with transverse mode control 审中-公开
标题翻译：激光振荡器
公开(公告)号：EP1119084A1
公开(公告)日：2001-07-25
申请号：EP00306862.4
申请日：2000-08-10
申请人： Intralase Corporation
发明人： Horvath, Christopher
IPC分类号： H01S3/098 , H01S3/106
CPC分类号： H01S3/08 , H01S3/08045 , H01S3/0805 , H01S3/081 , H01S3/106 , H01S3/1118
摘要： An oscillator (10) for isolating a transverse electro-magnetic (TEM) zero-zero mode pulsed laser beam includes a laser pumping diode (12) that is mounted on a base to induce a multi-mode laser beam (26) from a lasing medium (24). As initially induced, the multi-mode laser beam (26) is directed along a path and is characterized by a beating signal which has a frequency that is based on amplitude variations of laser pulses in the multi-mode laser beam (26). Electronics (42) detect this beating signal and generates a responsive error signal. With closed loop control, the error signal is used to advance a straightedge (50) toward the path of the multi-mode laser beam (26) to remove transverse modes from the multi-mode laser beam (26) with the straightedge (50). This advancement continues until the error signal is a null and the zero-zero mode pulsed laser beam is thereby isolated.
摘要翻译：用于隔离横向电磁（TEM）零 - 零模式脉冲激光束的振荡器（10）包括激光泵浦二极管（12），其安装在基座上以从激光器引导多模激光束（26）中等（24）。如最初感应的那样，多模激光束（26）沿着路径被引导，并且其特征在于具有基于多模激光束（26）中的激光脉冲的幅度变化的频率的跳动信号。电子（42）检测该跳动信号并产生响应误差信号。通过闭环控制，使用误差信号使直尺（50）朝向多模激光束（26）的路径前进，以从多模激光束（26）中移除横模，并具有直线（50）。这一进展继续进行，直到误差信号为零，从而分离零零模式的脉冲激光束。

57. 发明公开

EP1071179A2 Saturable Bragg reflectors and their use in mode-locked lasers 有权
标题翻译：在Modengekoppelten Lasern的SättigbareBragg-Reflektoren und ihre Verwendung
公开(公告)号：EP1071179A2
公开(公告)日：2001-01-24
申请号：EP00305863.3
申请日：2000-07-11
申请人： LUCENT TECHNOLOGIES INC.
发明人： Cunningham, John E. , Knox, Wayne H.
IPC分类号： H01S3/098 , G02F1/35
CPC分类号： H01S3/1118 , G02F1/3523
摘要： A saturable Bragg reflector for use in mode locking a laser comprises a stack alternately of layers of a high index of refraction and layers of a low index of refraction. The layers of high index all have optical thicknesses of about one quarter the operating wavelength of the laser. The layers of low index, except for the pair of uppermost layers, have optical thicknesses of a quarter the operating wavelength but that pair have a thickness of about one eighth of a wavelength. A quantum well is located near the center of the layer of high index between the pair of one eighth wavelength. Such a reflector is used as one end of a resonant cavity that houses a gain medium.
摘要翻译：用于模式锁定激光器的饱和布拉格反射器包括交替折射率高的折射率层和低折射率层的堆叠。高折射率层都具有约1/4激光器工作波长的光学厚度。除了一对最上层之外，低折射率层具有四分之一工作波长的光学厚度，但是该对具有约八分之一波长的厚度。量子阱位于一对八分之一波长之间的高折射率层的中心附近。这种反射器用作容纳增益介质的谐振腔的一端。

58. 发明公开

EP0951111A2 Polarisation based mode-locking of a laser 审中-公开
标题翻译：激光测距仪Polenization basenerender Modenkopplung
公开(公告)号：EP0951111A2
公开(公告)日：1999-10-20
申请号：EP99302985.9
申请日：1999-04-16
申请人： Spectra Physics Lasers, Inc.
发明人： Clark, James B. , Spence, David E. , Boggy, Richard D. , Kafka, James D.
IPC分类号： H01S3/098
CPC分类号： H01S3/1112 , H01S3/08054 , H01S3/082 , H01S3/109
摘要： The present invention is a system and method for mode-locking a laser, comprising reversibly converting radiation in the laser at a fundamental frequency into radiation at a second harmonic frequency, discriminating the radiation at the fundamental frequency using a polarization of the radiation at the fundamental frequency, and reconverting the radiation at the second harmonic frequency into radiation at the fundamental frequency.
摘要翻译：本发明是一种用于锁模激光器的系统和方法，包括以基频将激光器中的辐射可逆地转换成二次谐波频率的辐射，使用基波辐射的极化来区分基频处的辐射频率和将二次谐波频率的辐射重新转换成基频的辐射。

59. 发明授权

EP0693809B1 Modengekoppelter Faserringlaser 失效转让
标题翻译：锁模光纤环形激光器
公开(公告)号：EP0693809B1
公开(公告)日：1999-10-06
申请号：EP95111416.4
申请日：1995-07-20
申请人： ALCATEL
发明人： Pfeiffer, Thomas, Dr.
IPC分类号： H01S3/06 , H01S3/098 , H01S3/106 , H01S3/083
CPC分类号： H01S3/136 , H01S3/06791 , H01S3/107 , H01S3/1109 , Y10S372/703

60. 发明公开

EP0798824A3 Microchip lasers 失效
标题翻译： Mikrochiplaser
公开(公告)号：EP0798824A3
公开(公告)日：1998-08-26
申请号：EP97302016
申请日：1997-03-25
申请人： SPECTRON LASER SYSTEMS LTD
发明人： SARKIES PAUL HAROLD
IPC分类号： H01S3/02 , H01S3/04 , H01S3/042 , H01S3/06 , H01S3/08 , H01S3/098 , H01S3/105 , H01S3/10
CPC分类号： H01S3/105 , H01S3/025 , H01S3/0401 , H01S3/0405 , H01S3/042 , H01S3/0604 , H01S3/08031 , H01S3/1028
摘要： A microchip laser (1) comprises first and second mirrors (3,4) at spaced locations along an optical axis and defining a resonance cavity therebetween. A gain element (2) formed of a gain material is located in the cavity. Spacing means (6,13) providing a temperature dependent distance of separation between the mirrors which is greater than the axial thickness of the gain element such that a variable gap is defined between the first mirror and a first face of the gain element are also provided along with temperature regulating means operable to control the temperature of the gain element and the spacing means.

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