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公开(公告)号：US5974875A
公开(公告)日：1999-11-02
申请号：US129805
申请日：1998-08-06
摘要： The invention provides a system for passive measurement of atmospheric temperature using a passive direction detector for detecting the energy of a narrow wavelength band emanating from a volume of atmospheric gas. The resulting signal can be associated with an effective temperature. The effective temperature can be associated with an effective range. The system generates a temperature map which can determine, at predetermined time intervals, atmospheric temperatures in an azimuth plane associated with a predefined range from the detector. The temperature map can then be used to calculate temperature gradients that in turn can be used to compute the average Richardson number over an atmospheric layer and other atmospheric conditions to predict the presence of clear air turbulence.
摘要翻译： 本发明提供了一种使用被动方向检测器来无源测量大气温度的系统，用于检测从一定体积的大气气体发出的窄波段的能量。 所得到的信号可以与有效温度相关联。 有效温度可以与有效范围相关联。 系统产生温度图，该温度图可以以预定的时间间隔确定与来自检测器的预定义范围相关联的方位平面中的大气温度。 然后可以使用温度图来计算温度梯度，该梯度又可用于计算大气层和其他大气条件下的平均理查森数，以预测空气湍流的存在。
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2.发明授权High range resolution active imaging system using a high speed shutter and a light pulse having a sharp edge 失效高分辨率有源成像系统使用高速快门和具有锋利边缘的光脉冲
公开(公告)号：US5519209A
公开(公告)日：1996-05-21
申请号：US259943
申请日：1994-06-15
申请人： William R. Rapoport , Martin C. Baker , Michael L. Shand , Joseph J. Barrett , Howard E. Aschoff
发明人： William R. Rapoport , Martin C. Baker , Michael L. Shand , Joseph J. Barrett , Howard E. Aschoff
CPC分类号： G01S17/107 , G01S17/89
摘要： An active imaging system for viewing targets with a high degree of range resolution of approximately one foot. The imaging system utilizes a laser pulse which passes through an electro-optical pulse slicer which creates a sharp leading edge and/or a sharp falling edge on the laser pulse. The laser pulse travels to the target under observation, illuminates and reflects off of the target and returns to a camera. A target is viewed only during the time all or a portion of the returning laser pulse overlaps the time the camera shutter gate is open. The imaging system is particularly suited for determining depth information about a target by varying the time relationship when the returning laser pulse is received by the camera.
摘要翻译： 一种主动成像系统，用于观察高度大约一英尺的分辨率的目标。 成像系统利用穿过电光脉冲限幅器的激光脉冲，其在激光脉冲上产生尖锐的前沿和/或尖锐的下降沿。 激光脉冲在观察下行进到目标，照射并反射离开目标并返回到相机。 目标仅在所有或部分返回的激光脉冲与相机快门门打开的时间重叠的时间被观看。 成像系统特别适用于通过改变由相机接收到返回的激光脉冲时的时间关系来确定关于目标的深度信息。
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公开(公告)号：US4734913A
公开(公告)日：1988-03-29
申请号：US809606
申请日：1985-12-16
CPC分类号： H01S3/025 , H01S3/042 , H01S3/093 , H01S3/0405 , H01S3/0407
摘要： A simple, compact, and rugged laser comprises a solid transparent housing with two cavities. A laser medium is embedded in one cavity and a pump lamp in the other. By choosing for the housing and lamp envelope materials having thermal expansion coefficient similar to that of the laser medium, high power operation is feasible. An optional reflecting coating on the exterior of the housing enhances efficiency. An optional filter coating on the lamp envelope eliminates unwanted components of lamp radiation.
摘要翻译： 简单，紧凑，坚固的激光器包括具有两个腔体的实心透明外壳。 激光介质嵌入在一个空腔中，另一个是泵灯。 通过选择具有与激光介质类似的热膨胀系数的壳体和灯壳材料，高功率运行是可行的。 外壳上可选的反射涂层提高了效率。 灯罩上的可选滤镜涂层消除了灯辐射的不必要的部件。
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公开(公告)号：US4835786A
公开(公告)日：1989-05-30
申请号：US62940
申请日：1987-06-16
CPC分类号： H01S3/025 , H01S3/042 , H01S3/093 , H01S3/0405 , H01S3/0407
摘要： A simple, compact, and rugged laser comprises a solid transparent housing with two cavities. A laser medium is embedded in one cavity and a pump lamp in the other. By choosing for the housing and lamp envelope materials having thermal expansion coefficient similar to that of the laser medium, high power operation is feasible. An optional reflecting coating on the exterior of the housing enhances efficiency. A filter coating on the lamp envelope eliminates unwanted components of lamp radiation.
摘要翻译： 简单，紧凑，坚固的激光器包括具有两个腔体的实心透明外壳。 激光介质嵌入在一个空腔中，另一个是泵灯。 通过选择具有与激光介质类似的热膨胀系数的壳体和灯壳材料，高功率运行是可行的。 外壳上可选的反射涂层提高了效率。 灯罩上的过滤器涂层消除了灯辐射的不必要的部件。
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公开(公告)号：US5321711A
公开(公告)日：1994-06-14
申请号：US930256
申请日：1992-08-17
CPC分类号： H01S3/07 , H01S3/094 , H01S3/0612 , H01S3/0617 , H01S3/08072 , H01S3/1623 , H01S3/1633 , H01S3/1648
摘要： Solid state laser gain media of segmented construction are composed of at least two segments of a doped crystalline laser host which are arranged in crystallographic alignment, wherein the dopant concentration varies from segment to segment to provide gradient doping levels for reducing thermally generated stress/strain in the lasing operation.
摘要翻译： 分段结构的固态激光增益介质由掺杂的结晶激光器主体的至少两个部分组成，其结构取向排列，其中掺杂剂浓度随段而变化，以提供用于减少热产生的应力/应变的梯度掺杂水平 激光操作。
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公开(公告)号：US5287373A
公开(公告)日：1994-02-15
申请号：US929857
申请日：1992-08-17
CPC分类号： H01S3/16 , C30B15/00 , C30B29/12 , H01S3/0612 , H01S3/0617 , H01S3/1623 , H01S3/1648
摘要： Solid state laser gain media of the composition Cr.sup.+3 :XYZF.sub.6 wherein X is an alkali metal ion; Y is an alkaline earth metal ion, Cd.sup.+2 or Mg.sup.+2 ; and Z is Al.sup.+3, Ga.sup.+3 or Sc.sup.+3 are provided with gradient Cr doping levels for reducing thermally generated stress/strain in the lasing operation.
摘要翻译： 组成为Cr + 3：XYZF6的固态激光增益介质，其中X为碱金属离子; Y是碱土金属离子，Cd + 2或Mg + 2; 并且Z为Al + 3，Ga + 3或Sc + 3具有用于在激光操作中减少热产生的应力/应变的梯度Cr掺杂水平。
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公开(公告)号：US4723248A
公开(公告)日：1988-02-02
申请号：US743540
申请日：1985-06-11
CPC分类号： H01S3/113 , G02F1/3523 , H01S3/1061
摘要： An optical device that stabilizes the power in a cw laser beam comprises a material whose absorption coefficient increases wth increasing incident intensity. The same device acts as an energy limiter and pulse shortener for a pulsed laser. In either case, the device can be located either within the laser cavity or outside it. In another embodiment, the device is placed into the cavity of a passively mode-locked laser to permit mode-locking with laser materials that have high gain-saturation energy. Materials suitable for use in the device include Cr-doped crystalline solids and organic solutions, such as laser dyes, saturable absorber dyes, etc.
摘要翻译： 稳定cw激光束的功率的光学装置包括其吸收系数随入射强度增加而增加的材料。 相同的器件用作脉冲激光器的限流器和脉冲缩短器。 在任一情况下，该装置可以位于激光腔内或其外部。 在另一个实施例中，将器件放置在被动锁模激光器的空腔中，以允许使用具有高增益饱和能量的激光材料进行锁模。 适用于器件的材料包括Cr掺杂的结晶固体和有机溶液，如激光染料，可饱和吸收剂染料等。
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公开(公告)号：US4490822A
公开(公告)日：1984-12-25
申请号：US389316
申请日：1982-06-17
申请人： John C. Walling , Michael L. Shand
发明人： John C. Walling , Michael L. Shand
CPC分类号： H01S3/025 , H01S3/0606 , H01S3/061 , H01S3/0915 , H01S3/094 , H01S3/1623 , H01S3/164 , H01S3/2308
摘要： A broadly wavelength-tunable laser is provided which comprises as the laser medium a single crystal of YGG:Cr.sup.3+. The laser may be operated over a broad temperature range from cryogenic temperatures to elevated temperatures. Emission is in a spectral range from red to infrared, and the laser is useful in the fields of defense, communications, isotope separation, photochemistry, etc.
摘要翻译： 提供了广泛波长可调的激光器，其包括作为激光介质的YGG：Cr3 +的单晶。 激光可以在从低温到高温的宽温度范围内运行。 发射在红光到红外的光谱范围内，激光在防御，通信，同位素分离，光化学等领域是有用的。
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