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公开(公告)号：US5454004A
公开(公告)日：1995-09-26
申请号：US239028
申请日：1994-05-06
Applicant: James R. Leger
Inventor： James R. Leger
CPC classification number: G02B5/1871 , G02B27/0037 , H01S3/10076 , H01S2301/206 , H01S3/08045 , H01S3/0805 , H01S3/08059 , H01S3/08068
Abstract: Method for making a custom phase-conjugating diffractive mirror for a laser resonator comprising the steps of: (a) (a) choosing a specified beam mode profile a.sub.i (x,y) that will suit need of said designer, (b) calculating the mode profile b(x',y') which is a value of the specified a.sub.i (x,y) that is propagated to the reflection surface of the diffractive mirror and (c) calculating mirror reflectance t(x',y') which reflects phase conjugate of b(x',y'). A method for fabricating such a mirror is shown. Another aspect of the invention is the addition of a phase adjusting element into a laser resonator, and compensating for the addition of a phase adjusting element in the design of other phase-adjusting elements such as the mirrors.
Abstract translation: 一种用于制造用于激光谐振器的定制相位共轭衍射镜的方法，包括以下步骤：（a）（a）（a）选择适合所述设计者需要的指定波束模式分布ai（x，y），（b） 模式分布b（x'，y'），其是传播到衍射镜的反射面的规定的ai（x，y）的值，（c）计算镜面反射率t（x'，y'）， 反映b（x'，y'）的相位共轭。 示出了制造这种镜子的方法。 本发明的另一方面是将相位调整元件添加到激光谐振器中，并且在其他相位调整元件（例如反射镜）的设计中补偿相位调整元件的添加。
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公开(公告)号：US5402438A
公开(公告)日：1995-03-28
申请号：US228082
申请日：1994-04-15
Applicant: Ryohei Tanuma
Inventor： Ryohei Tanuma
CPC classification number: H01S3/0804 , G02B6/4206 , G02B6/4203 , H01S3/005 , H01S3/0606 , H01S3/061 , H01S3/08068
Abstract: For high energy density and improved processing performance of a solid-state laser, the product .theta.d of a laser beam with divergence .theta. and beam diameter "d" at the beam waist is reduced. Formation of an non-oscillating region as in an output mirror with a pinhole is prevented by use of a hole-type mirror with a central region having reduced reflectance. For increased range of stable oscillation, a beam expander is interposed between a laser medium and the output mirror. The focused beam of a slab laser is made circular by using a columnar light-guiding path on the output side of the output mirror. A laser beam is more readily admitted into an optical fiber by use of a conical light-guiding path. With a hole-type output mirror, two-component laser output from a slab laser has very small .theta.d values.
Abstract translation: 对于固态激光器的高能量密度和改进的处理性能，减小了具有发散度θ的激光束和光束腰部的光束直径“d”的产品theta d。 通过使用具有反射率降低的中心区域的孔型反射镜来防止形成具有针孔的输出反射镜中的非振荡区域。 为了增加稳定振荡的范围，在激光介质和输出反射镜之间插入光束扩展器。 通过在输出反射镜的输出侧使用柱状导光路径，将板状激光的聚焦光束制成圆形。 激光束通过使用锥形导光路径更容易地进入光纤。 使用孔型输出镜，来自平板激光器的双分量激光输出具有非常小的θd值。
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83.发明授权
公开(公告)号：US5283796A
公开(公告)日：1994-02-01
申请号：US871888
申请日：1992-04-21
Applicant: David Fink
Inventor： David Fink
CPC classification number: H01S3/106 , H01S3/105 , H01S2301/08 , H01S3/08068 , H01S3/2232
Abstract: Frequency modulated radar transmitters with a repetitive linear increase in frequency with time, referred to as "frequency chirps", are required for many radar applications. The present invention provides a simple way of obtaining such a chirped frequency modulation for a laser radar transmitter or the like. The principle is to translate an optical wedge in the direction of its wedge gradient at constant velocity across the optical path of a laser resonator. The resulting increase or decrease in the effective optical length of the resonator causes frequency chips. In a first embodiment of the present invention, a rotating phase plate on the face of a rotating wheel with the added phase varying linearly with angular position around the wheel is placed within a laser's resonator cavity to tune the optical pathlength of the cavity and thereby the longitudinal mode of the resonator to produce the chirp. This embodiment can be used in either a reflective or a transmissive mode. In a second embodiment of the present invention, the outer peripheral rim of a spiral wheel having a spirally increasing or decreasing radius is used, whereby the rim functions as a mirror, is disposed within the laser resonator. Rotating the wheel changes the optical pathlength of the resonator and causes the longitudinal modes of the resonator to tune so as to generate the required chirp sequence. Lastly, various systems are proposed for eliminating various types of errors in the system as well as for generating both up-chirps and down-chirps sequentially and/or simultaneously.
Abstract translation: 对于许多雷达应用，需要频率随时间的重复线性增加的调频雷达发射机（被称为“频率啁啾”）。 本发明提供了一种获得激光雷达发射机等的这种啁啾频率调制的简单方法。 其原理是在激光谐振器的光路上以恒定的速度沿其楔形梯度的方向平移光楔。 谐振器的有效光学长度的增加或减少导致频率芯片。 在本发明的第一实施例中，在旋转轮的表面上的旋转相位板被放置在激光器的谐振腔内，以调节空腔的光程长度 谐振器的纵向模式以产生啁啾声。 该实施例可以以反射或透射模式使用。 在本发明的第二实施例中，使用具有螺旋增加或减小半径的螺旋轮的外周边缘，由此轮缘用作反射镜，设置在激光谐振器内。 轮的转动改变了谐振器的光路长度，并使谐振器的纵向模式进行调谐，以产生所需的啁啾序列。 最后，提出了用于消除系统中的各种类型的错误以及顺序地和/或同时地产生上行链路和下行链路的各种系统。
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公开(公告)号：US5222093A
公开(公告)日：1993-06-22
申请号：US620031
申请日：1990-11-30
Applicant: Jean-Paul Pocholle , Michel Papuchon , Jean-Pierre Huignard , Claude Puech
Inventor： Jean-Paul Pocholle , Michel Papuchon , Jean-Pierre Huignard , Claude Puech
CPC classification number: H01S3/305 , H01S2301/20 , H01S3/08063 , H01S3/08068
Abstract: A laser having a glass enclosure placed in an optical cavity receives a pump beam and generates at least one first-order and one second-order Stokes wave. The construction is such that an optical waveguide placed in the gas enclosure is used to select the first and the second-order Stokes wave.
Abstract translation: 具有放置在光腔中的玻璃外壳的激光器接收泵浦光束并且产生至少一个一阶和一个二阶斯托克斯波。 该结构使得放置在气体外壳中的光波导用于选择第一和第二阶斯托克斯波。
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公开(公告)号：US5173916A
公开(公告)日：1992-12-22
申请号：US780637
申请日：1991-10-23
Applicant: John A. Benda
Inventor： John A. Benda
CPC classification number: H01S3/11 , H01S3/076 , H01S3/0818 , H01S3/08068
Abstract: An optically pulsed laser with an unstable resonator configuration is described with two feedback beams. The laser relies on adjoint mode feedback with a single modulator in the low power feedback beam path. The laser is characterized by a two coupled adjoint feedback beams each configured to pass through the modulator in one direction only, thereby doubling the output power potential of the laser.
Abstract translation: 用两个反馈光束描述了具有不稳定谐振器结构的光脉冲激光器。 在低功率反馈光束路径中，激光器依赖于单个调制器的伴随模式反馈。 激光器的特征在于两个耦合的伴随反馈光束，每个配置成仅在一个方向上通过调制器，从而使激光器的输出功率电位加倍。
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Patent Agency Ranking
公开(公告)号：US5134342A
公开(公告)日：1992-07-28
申请号：US553606
申请日：1990-07-18
Applicant: Bernd Jodicke , Hans-Gunter Mathews
Inventor： Bernd Jodicke , Hans-Gunter Mathews
CPC classification number: H01S3/08068 , H01J25/025
Abstract: In a quasi-optical gyrotron which exhibits a quasi-optical resonator having two mirrors (4a, 4b) which opposite one another on a resonator axis (5), the required electromagnetic radiation is coupled out by means of a hologram. In this arrangement, at least one of the two mirrors (4b) of the resonator exhibits a reflective surface (8b) provided with a hologram. The hologram is constructed in such a manner that the radiation to be coupled out is scattered in the direction of at least exactly one coupling-out axis (10), the at least exactly one coupling-out axis (10) enclosing a predetermined angle .alpha. not equal to zero with the resonator axis (5). The angle .alpha. is preferably as small as possible.
Abstract translation: 在具有在谐振器轴（5）上彼此相对的两个反射镜（4a，4b）的准光学谐振器的准光学陀螺仪中，所需的电磁辐射通过全息图耦合出来。 在这种布置中，谐振器的两个反射镜（4b）中的至少一个具有设置有全息图的反射表面（8b）。 全息图被构造成使得要耦合的辐射在至少恰好一个耦合输出轴线（10）的方向上散射，至少恰好一个包围预定角度α的耦合输出轴线（10） 谐振器轴（5）不等于零。 角度α优选尽可能小。
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公开(公告)号：US4517677A
公开(公告)日：1985-05-14
申请号：US387189
申请日：1982-06-10
Applicant: Konrad Altmann
Inventor： Konrad Altmann
CPC classification number: H01S3/08045 , H01S3/08068
Abstract: A stable optical laser resonator is formed by two mirrors facing each other. At least one of the mirrors operates as a decoupling device for decoupling a coherent, pulsating laser beam from the resonator. For this purpose the decoupling mirror has a zone or zones which are permeable or partially permeable to the laser beam. These zones are located in predetermined areas of the mirror and the size of these zones is relatively small compared to the total effective mirror surface. Preferably, the active lasing medium is limited to a narrow cross-sectional area perpendicularly to the optical axis of the resonator. The narrow cross-sectional area has an approximately rectangular shape for enforcing the one-dimensional oscillation movement of a laser beam.
Abstract translation: 稳定的光学激光谐振器由彼此面对的两个反射镜形成。 至少一个反射镜用作去耦合来自谐振器的相干脉动激光束的去耦装置。 为此，去耦镜具有对于激光束是可渗透的或部分可渗透的区域或区域。 这些区域位于反射镜的预定区域中，并且这些区域的尺寸与总有效镜面相比相对较小。 优选地，有源激光介质限于垂直于谐振器的光轴的窄横截面面积。 狭窄的横截面面积具有近似矩形的形状，用于强化激光束的一维振荡运动。
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公开(公告)号：US4221468A
公开(公告)日：1980-09-09
申请号：US015220
申请日：1979-02-26
Applicant: John A. Macken
Inventor： John A. Macken
CPC classification number: H01S3/08068 , G02B5/10 , H01S2301/20
Abstract: There is provided a laser mirror which produces an unusual type of laser output beam with certain desirable properties. For example, diffraction limited laser beams can be produced with large size components. The mirror is reflective, non-transmissive, and includes a plurality of spherical cavities therein.
Abstract translation: 提供了一种激光镜，其产生具有某些所需特性的不寻常类型的激光输出光束。 例如，可以用大尺寸的部件制造衍射极限激光束。 镜子是反射的，不透光的，并且在其中包括多个球形空腔。
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公开(公告)号：US3617938A
公开(公告)日：1971-11-02
申请号：US3617938D
申请日：1970-05-04
Applicant: UNITED AIRCRAFT CORP
Inventor： DENES LOUIS J , WARD PATRICK C
IPC: H01S3/08
CPC classification number: H01S3/08068 , H01S3/08054 , H01S3/10061
Abstract: The surface of a laser mirror is formed with grooves to induce polarization of a laser energy incident therein, the plane of polarization being selective and reproducible. The dimensions and spacing of the grooves are a function of the wavelength of the laser energy.
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90.发明授权
公开(公告)号：US3365671A
公开(公告)日：1968-01-23
申请号：US56459966
申请日：1966-07-12
Applicant: BELL TELEPHONE LABOR INC
Inventor： KOGELNIK HERWIG W
IPC: H01S3/081
CPC classification number: H01S3/2325 , H01S3/08068 , H01S3/2232
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