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公开(公告)号：WO0182420A3
公开(公告)日：2002-04-04
申请号：PCT/US0112048
申请日：2001-04-12
Applicant: RAYTHEON CO
Inventor： FUKUMOTO JOSEPH M
CPC classification number: G02F1/39 , G02F1/3551 , G02F1/3553 , G02F2201/16 , G02F2201/17 , G02F2201/18 , G02F2201/34 , G02F2203/05 , G02F2203/58 , H01S3/0809
Abstract: A novel and efficient system and method for providing an output beam of collimated energy in the 8-12 micron range. The solid state system includes a pump laser (210) for providing an input beam and an OPO (250) using an x-cut potassium titanyl arsenate crystal for shifting the input beam from the first frequency to a second frequency. A second optical parametric oscillator (271) is included for shifting the beam from a second frequency to a third frequency. The second optical parametric oscillator (271) uses a cadmium selenide crystal. A tuning mechanism with an associated controller is provided to tune the oscillator as needed for a particular application.
Abstract translation: 一种新颖有效的系统和方法，用于提供8-12微米范围内准直能量的输出光束。 固态系统包括用于提供输入光束的泵激光器（210）和使用x切割的硫酸钛钾砷酸盐晶体的OPO（250），用于将输入光束从第一频率移动到第二频率。 包括第二光学参量振荡器（271），用于将光束从第二频率移动到第三频率。 第二光参量振荡器（271）使用硒化镉晶体。 提供具有相关联的控制器的调谐机构以根据特定应用的需要来调谐振荡器。
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公开(公告)号：WO0181878A3
公开(公告)日：2002-02-21
申请号：PCT/US0112294
申请日：2001-04-16
Applicant: RAYTHEON CO
Inventor： FUKUMOTO JOSEPH M
CPC classification number: G02F1/39 , G02F1/3551 , G02F1/3553 , G02F2201/16 , G02F2201/17 , G02F2201/18 , G02F2201/34 , G02F2203/05 , G02F2203/58 , H01S3/0809
Abstract: A chemical sensing system and method. The system (10) includes a transmitter (20) having a laser (200) for providing a collimated beam of electromagnetic energy at a first frequency and a Q switch (230) in optical alignment with the beam. The system further inlcudes a crystal for shifting the frequency of the beam from the first frequency to a second frequency. A mechanism is included for shifting the beam from the second frequency to a third frequency in the range of 8-12 microns. Ideally, the input beam is provided by a neodymium-YAG laser and the Q switch is a passive Q switch. The crystal is x-cut potassium titanyl arsenate. The system includes a mechanism for switching the polarization state of the second beam and providing third and fourth beams therefrom. The third beam has a first polarizaion and the fourth beam has a second polarization. The second polyrization is orthogonal relative to the first polarization. The mechanism for shifting the beam from the second frequency to the third frequency includes first and seccond optical parametric oscillators (250 and 271), each optical parametric oscillator including a cadmium selenide crystal. The frequency shifted third and fourth beams are combined to provide an output beam in the range of 8-12 microns. The output beam is transmitted and a return signal therefrom is detected by a receiver in the illustrative chemical sensing application.
Abstract translation: 化学传感系统和方法。 系统（10）包括具有用于在第一频率处提供准直的电磁能束的激光器（200）和与光束对准的Q开关（230）的发射器（20）。 该系统还包括用于将光束的频率从第一频率移位到第二频率的晶体。 包括用于将光束从第二频率移动到8-12微米范围内的第三频率的机构。 理想情况下，输入光束由钕-YAG激光器提供，Q开关是无源Q开关。 该晶体是x-切割的硫酸钛钾。 该系统包括用于切换第二光束的偏振状态并从其提供第三和第四光束的机构。 第三光束具有第一极化，第四光束具有第二极化。 第二多边形相对于第一极化是正交的。 用于将光束从第二频率移动到第三频率的机构包括第一和第二光学参量振荡器（250和271），每个光学参量振荡器包括硒化镉晶体。 频移的第三和第四光束被组合以提供在8-12微米范围内的输出光束。 在说明性化学感测应用中，输出光束被传送并且由接收器检测其返回信号。
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Patent Agency Ranking
公开(公告)号：WO0181955A2
公开(公告)日：2001-11-01
申请号：PCT/US0112046
申请日：2001-04-12
Applicant: RAYTHEON CO
Inventor： FUKUMOTO JOSEPH M , TSAI CHENG-CHIH
Abstract: A shaping optic for diode light sheets. The Fresnel cylinder lens has a plurality of facets that channels multiple light sheet output from a diode stack having arbitrary pitch and diode bar number into a gaussian pump light deposition profile within a laser gain medium. In a specific embodiment, the lens is formed of fused silica or BK7 glass covered with broad angle anti-reflection coating, and the vertical extent of the facets is matched to the pitch spacing of the diode.
Abstract translation: 二极管灯片的成形光学元件。 菲涅耳圆柱透镜具有多个面，其将具有任意节距和二极管条数的二极管堆叠的多个光片输出到激光增益介质内的高斯泵浦光沉积轮廓内。 在一个具体实施例中，透镜由覆盖有广角防反射涂层的熔融二氧化硅或BK7玻璃形成，并且小面的垂直范围与二极管的间距间隔相匹配。
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公开(公告)号：WO0150555A3
公开(公告)日：2002-05-10
申请号：PCT/US0034394
申请日：2000-12-18
Applicant: RAYTHEON CO
Inventor： FUKUMOTO JOSEPH M
CPC classification number: G02F1/39 , G02F1/3551 , G02F1/3553 , G02F2201/16 , G02F2201/17 , G02F2201/18 , G02F2201/34 , G02F2203/05 , G02F2203/58 , H01S3/0809
Abstract: An arrangement (10) for efficiently shifting energy received at a first wavelength and outputting the shifted energy at a second wavelength. The arrangement (10) includes a laser (12) and an optical parametric oscillator (14) of unique design. The oscillator (14) is constructed with an energy shifting crystal (20) and first and second reflective elements (16) and (18) disposed on either side thereof. Light from the laser (12) at a fundamental frequency is shifted by the crystal and output at a second wavelength. The second wavelength is a primary emission and induces a secondary emission of energy in the crystal. A novel feature of the invention is a coating applied on the reflective elements (16 and/or 18) for minimizing the secondary emission. This constrains the energy to be output by the arrangement (10) at the wavelength of the desired primary emission. In the alternative, the arrangement (10) may be optimized to output one or more of the secondary emissions.
Abstract translation: 一种用于有效地移动以第一波长接收的能量并输出第二波长的移动的能量的装置（10）。 该装置（10）包括具有独特设计的激光器（12）和光学参数振荡器（14）。 振荡器（14）由能量转换晶体（20）和设置在其两侧的第一和第二反射元件（16）和（18）构成。 来自激光器（12）的基频的光被晶体偏移并以第二波长输出。 第二波长是主要发射，并在晶体中引起二次能量发射。 本发明的新颖特征是涂覆在反射元件（16和/或18）上用于最小化二次发射的涂层。 这限制了在所需的一次发射波长下由布置（10）输出的能量。 在替代方案中，布置（10）可以被优化以输出一个或多个二次排放。
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公开(公告)号：WO0182421A2
公开(公告)日：2001-11-01
申请号：PCT/US0112293
申请日：2001-04-16
Applicant: RAYTHEON CO
Inventor： FUKUMOTO JOSEPH M
CPC classification number: G02F1/39 , G02F1/3551 , G02F1/3553 , G02F2201/16 , G02F2201/17 , G02F2201/18 , G02F2201/34 , G02F2203/05 , G02F2203/58 , H01S3/0809 , H01S3/1061 , H01S3/113
Abstract: A passive Q switch. The inventive Q switch (230) includes a first wedge (232) of material adapted to absorb electromagnetic energy. The first wedge (232) has a first thickness on a first end thereof and a second thickness on a second end thereof diametrically opposite the first end. The first wedge (232) has a first surface connecting the first and second ends and a second surface (236) connecting the first and second ends. The second surface (236) is slanted relative to the first surface. A second wedge of material (234) is included in the inventive passive Q switch (230). As per the first wedge (232), the second wedge (234) has a first thickness on a first end thereof and a second thickness on a second end thereof diametrically opposite the first end. The second wedge has a first surface connecting the first and second ends and a second surface (238) connecting the first and second ends. The second surface (238) is slanted relative to the first surface. The second surface (236) of the first wedge (232) is mounted in optical alignment with the second surface (238) of the second wedge (234) and in a plane parallel thereto. In the illustrative embodiment, the wedges (232, 234) are made of chromium:yttrium aluminum garnet (Cr :YAG) and mounted to allow the first and second wedges to translate relative to each other while maintaining a constant distant 'd' between the second surfaces thereof. The inventive Q switch allows for a variable thickness and lasing hold-off in a passive arrangement.
Abstract translation: 被动Q开关。 本发明的Q开关（230）包括适于吸收电磁能的材料的第一楔形物（232）。 第一楔形物（232）在其第一端具有第一厚度，并且在其第二端上与第一端径向相对的第二厚度。 第一楔形物（232）具有连接第一和第二端部的第一表面和连接第一和第二端部的第二表面（236）。 第二表面236相对于第一表面倾斜。 本发明的无源Q开关（230）中包括第二楔形材料（234）。 根据第一楔形物（232），第二楔形物（234）在其第一端上具有第一厚度，在第二楔形物的第二端部具有与第一端部直径相对的第二厚度。 第二楔形件具有连接第一和第二端部的第一表面和连接第一和第二端部的第二表面（238）。 第二表面238相对于第一表面倾斜。 第一楔形物（232）的第二表面（236）安装成与第二楔形物（234）的第二表面（238）以及与其平行的平面光学对准。 在说明性实施例中，楔形件（232,234）由铬：钇铝石榴石（Cr +2：YAG）制成，并安装成允许第一和第二楔形件相对于彼此平移，同时保持恒定的“ d'在其第二表面之间。 本发明的Q开关允许在被动布置中具有可变的厚度和激光延伸。
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公开(公告)号：CA2366982C
公开(公告)日：2005-02-08
申请号：CA2366982
申请日：2000-12-18
Applicant: RAYTHEON CO
Inventor： FUKUMOTO JOSEPH M
Abstract: An arrangement (10) for efficiently shifting energy received at a first wavelength and outputting the shifted energy at a second wavelength. The arrangement (10) includes a laser (12) and an optical parametric oscillator (14) of unique design. The oscillator (14) is constructed with an energy shifting crystal (20) and first and second reflective elements (16) and (18) disposed on either side thereof. Light from the laser (12) at a fundamental frequency is shifted by the crystal and output at a second wavelength. The second wavelength is a primary emission and induces a secondary emission of energy in the crystal. A novel feature of the invention is a coating applied on the reflective elements (16 and/or 18) for minimizing the secondary emission. This constrains the energy to be output by the arrangement (10) at the wavelength of the desired primary emission. In the alternative, the arrangement (10) may be optimized to output one or more of the secondary emissions.
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公开(公告)号：CA2366982A1
公开(公告)日：2001-07-12
申请号：CA2366982
申请日：2000-12-18
Applicant: RAYTHEON CO
Inventor： FUKUMOTO JOSEPH M
Abstract: An arrangement (10) for efficiently shifting energy received at a first wavelength and outputting the shifted energy at a second wavelength. The arrangement (10) includes a laser (12) and an optical parametric oscillator (14) of unique design. The oscillator (14) is constructed with an energy shifting crystal (20) and first and second reflective elements (16) and (18) disposed on either side thereof. Light from the laser (12) at a fundamental frequency is shifted by the crystal and output at a second wavelength. The second wavelength is a primary emission and induces a secondary emission of energy in the crystal. A novel feature of the invention is a coating applied on the reflective elements (16 and/or 18) for minimizing the secondary emission. This constrains the energy to be output by the arrangement (10) at the wavelength of the desired primary emission. In the alternative, the arrangement (10) may be optimized to output one or more of the secondary emissions.
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