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公开(公告)号：US09800011B2
公开(公告)日：2017-10-24
申请号：US14149396
申请日：2014-01-07
发明人： J. Gary Eden , John Darby Hewitt
CPC分类号： H01S3/094096 , H01S3/0408 , H01S3/094092 , H01S3/0941 , H01S3/095 , H01S3/2207 , H01S3/227
摘要： A laser pumping method pumps a primary amount of energy into a laser medium to populate an intermediate level near an upper laser level. A lesser amount of energy is pumped into the laser medium to populate an excited level that lies above the upper laser level and transfers atomic or molecular population to the upper laser level by a nonradiative process. A laser device includes a laser medium supporting four levels, including a lower laser level, an upper laser level, an excited level above the laser level from which population transfers to the upper laser level via nonradiative transition, and an intermediate level within a few kT of the upper laser level.
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公开(公告)号：US20170229831A1
公开(公告)日：2017-08-10
申请号：US15488066
申请日：2017-04-14
发明人： F. William Hersman , David W. Watt
CPC分类号： H01S3/031 , H01S3/032 , H01S3/0346 , H01S3/036 , H01S3/0405 , H01S3/041 , H01S3/0941 , H01S3/0943 , H01S3/104 , H01S3/227
摘要： Techniques and architecture are disclosed for preserving optical surfaces (e.g., windows, coatings, etc.) in a flowing gas amplifier laser system, such as a diode-pumped alkali laser (DPAL) system. In some instances, the disclosed techniques/architecture can be used, for example, to protect optical surfaces in a DPAL system from: (1) chemical attack by pump-bleached alkali vapor atoms and/or ions; and/or (2) fouling by adherence thereto of reaction products/soot produced in the DPAL. Also, in some instances, the disclosed techniques/architecture can be used to substantially match the geometry of the pumping volume with that of the lasing volume, thereby minimizing or otherwise reducing the effects of amplified spontaneous emission (ASE) on DPAL output power. Furthermore, in some cases, the disclosed techniques/architecture can be used to provide a DPAL system capable of producing a beam output power in the range of about 20 kW to 10 MW, or greater.
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公开(公告)号：US09048617B2
公开(公告)日：2015-06-02
申请号：US13940185
申请日：2013-07-11
发明人： Jason Zweiback , Claudio Filippone
CPC分类号： H01S3/041 , H01S3/03 , H01S3/031 , H01S3/0315 , H01S3/036 , H01S3/0941 , H01S3/104 , H01S3/227
摘要： A system for circulating an alkali vapor to operate as, for example, a gain medium in a diode pumped alkali laser. The system includes a pump configured to pump a buffer gas to a metal source. A source heat exchanger heats the alkali metal source to produce a metal vapor that flows with the buffer gas. An action chamber receives the metal vapor and buffer gas combination and contains the combination while the metal vapor performs its required functions. The metal vapor and buffer combination continue to flow to a metal vapor trap and heat exchanger that cools the metal vapor and buffer gas combination. The metal vapor trap collects alkali metal condensate as the combination cools. The diffuser transport channel provides an inflow of clean buffer gas to the pump. The pump provides a circulating gas flow through the closed loop system.
摘要翻译： 一种用于循环碱性蒸汽以在二极管泵浦碱性激光器中作为例如增益介质运行的系统。 该系统包括配置成将缓冲气体泵送到金属源的泵。 源热交换器加热碱金属源以产生与缓冲气体一起流动的金属蒸气。 动作室接收金属蒸气和缓冲气体组合，并且当金属蒸气执行其所需的功能时，其包含组合。 金属蒸汽和缓冲液组合继续流到金属蒸气阱和冷却金属蒸汽和缓冲气体组合的热交换器。 当组合冷却时，金属蒸汽捕集阱收集碱金属冷凝物。 扩散器输送通道提供清洁的缓冲气体流入泵。 泵提供循环气体流过闭环系统。
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公开(公告)号：US20080285614A1
公开(公告)日：2008-11-20
申请号：US12122874
申请日：2008-05-19
CPC分类号： H01S3/227 , H01S3/03 , H01S3/036 , H01S3/041 , H01S3/09408 , H01S3/0941 , H01S3/09415 , H01S3/0943
摘要： The present invention provides in one of the embodiments for either a continuous wave (cw) or pulsed alkali laser having an optical cavity resonant at a wavelength defined by an atomic transition, a van der Waals complex within the optical cavity, the van der Waals complex is formed from an alkali vapor joined with a polarizable gas, and a pump laser for optically pumping the van der Waals complex outside of the Lorentzian spectral wings wherein the van der Waals complex is excited to form an exciplex that dissociates forming an excited alkali vapor, generating laser emission output at the wavelength of the lasing transition.
摘要翻译： 本发明在实施例中提供了一种连续波（cw）或脉冲碱性激光器，其具有在由原子跃迁限定的波长处共振的光学腔，光腔内的范德华复合物，范德华复合物 由与可极化气体连接的碱性蒸汽形成，以及用于在洛伦兹光谱翼外部光学泵送范德瓦尔兹复合物的泵激光器，其中激发了范德华复合物以形成解离形成激发的碱性蒸气的激元复合物， 在激光转换的波长处产生激光发射输出。
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公开(公告)号：US20080031299A1
公开(公告)日：2008-02-07
申请号：US11878745
申请日：2007-07-26
申请人： Minoru Niigaki , You Wang , Yujin Zheng , Hirofumi Kan
发明人： Minoru Niigaki , You Wang , Yujin Zheng , Hirofumi Kan
IPC分类号： H01S3/227
CPC分类号： H01S3/227 , H01S3/02 , H01S3/041 , H01S3/08054 , H01S3/0815 , H01S3/09415 , H01S3/1028 , H01S5/4062
摘要： An alkali-encapsulated cell internally having an alkali metal vapor G encapsulated is provided with first and second heaters 11, 12. The alkali-encapsulated cell 10 has first and second end faces 10a, 10b opposed to each other, and a side face 10c connecting the two end faces 10a, 10b. Each of the first and second heaters 11, 12 has a covering portion 11B, 12B and an extending portion 11C, 12C. Some portions of the alkali-encapsulated cell 10 are inserted in the covering portions 11B, 12B. On the other hand, the extending portions 11C, 12C extend in directions away from the alkali-encapsulated cell 10. The first and second heaters 11, 12 are separated from each other with a distance d0 between them in an opposing direction of the first and second end faces 10a, 10b.
摘要翻译： 在内部具有封装有碱金属蒸气G的碱封装的电池设置有第一和第二加热器11,12。 碱封装的电池10具有彼此相对的第一和第二端面10a，10b以及连接两个端面10a，10b的侧面10c。 第一和第二加热器11,12中的每个具有覆盖部分11B，12B和延伸部分11C，12C。碱封装的电池10的一些部分插入到覆盖部分11B，12B中。 另一方面，延伸部分11C，12C沿着远离碱封装的电池10的方向延伸。 第一和第二加热器11,12在它们之间沿第一和第二端面10a，10b的相反方向彼此间隔开距离d 0。
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公开(公告)号：US20050190809A1
公开(公告)日：2005-09-01
申请号：US11031977
申请日：2005-01-07
申请人： Alan Petersen , James Kafka
发明人： Alan Petersen , James Kafka
CPC分类号： H01S3/227 , H01S3/005 , H01S3/094053 , H01S3/094057 , H01S3/0941 , H01S3/09415 , H01S3/109 , H01S3/2316
摘要： A laser device is provided for generating an ultraviolet output. The device comprises a laser having at least one diode-pumped alkali metal vapor gain cell for generating a near infrared laser output, and at least two optically-nonlinear crystals. In one particular embodiment, the laser uses a Rb gas cell and generates radiation at a wavelength of about 199 nm and at least 200 mW of power with a linewidth of less than 10 GHz. In another embodiment, narrow linewidth UV light is generated at 265 nm.
摘要翻译： 提供用于产生紫外线输出的激光装置。 该装置包括具有至少一个用于产生近红外激光输出的二极管泵浦碱金属蒸气增益池的激光器和至少两个光学非线性晶体。 在一个具体实施例中，激光器使用Rb气体电池并且产生具有小于10GHz的线宽的大约199nm的波长和至少200mW的功率的辐射。 在另一个实施例中，在265nm处产生窄线宽UV光。
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公开(公告)号：US6162213A
公开(公告)日：2000-12-19
申请号：US180767
申请日：1994-01-07
申请人： Bob W. Stewart
发明人： Bob W. Stewart
CPC分类号： H01S3/227 , A61B18/20 , A61B2018/2065 , A61N2005/067 , H01S3/08063 , H01S3/08086 , H01S3/097 , H01S3/105 , H01S3/109
摘要： A multiple wavelength laser system includes an active laser gain medium comprising metal vapor which, when excited, produces laser radiation at a plurality of wavelengths. A plurality of medically useable wavelengths are coaxially transmitted from the laser system for simultaneous use in a medical procedure. One of the wavelengths produced is closely matched to a light absorption peak of either water or Hemoglobin, and another wavelength is matched to the other of these light absorption peaks or a targeted photosensitive agent or chemical. The disclosed laser system can also include a laser gain medium comprising a plurality of metal vapors to produce the plurality of wavelengths desired. In preferred embodiments, the metal vapors can include barium, thulium, and/or samarium. A laser conversion device such as an OPO crystal may also be included to convert a portion of the radiation to one or more additional medically useable wavelengths.
摘要翻译： 多波长激光系统包括主动激光增益介质，其包括金属蒸汽，当被激发时，其产生多个波长的激光辐射。 多个医学上可用的波长从激光系统同轴传输，以在医疗过程中同时使用。 所产生的波长之一与水或血红蛋白的光吸收峰紧密匹配，另一波长与这些光吸收峰中的另一个或目标感光剂或化学物质匹配。 所公开的激光系统还可以包括包括多个金属蒸气的激光增益介质，以产生所需的多个波长。 在优选的实施方案中，金属蒸气可以包括钡，ium和/或钐。 还可以包括诸如OPO晶体的激光转换装置以将辐射的一部分转换成一个或多个另外的医学上可用的波长。
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公开(公告)号：US5287369A
公开(公告)日：1994-02-15
申请号：US241221
申请日：1988-08-18
申请人： Bruce E. Warner , David B. Duncan
发明人： Bruce E. Warner , David B. Duncan
摘要： Laser beam generating apparatus including a septum segment disposed longitudinally within the tubular structure of the apparatus. The septum provides for radiatively dissipating heat buildup within the tubular structure and for generating relatively uniform laser beam pulses so as to minimize or eliminate radial pulse delays (the chevron effect).
摘要翻译： 激光束产生装置包括纵向设置在该装置的管状结构内的隔膜段。 隔垫提供了在管状结构内的辐射散热并且用于产生相对均匀的激光束脉冲，以便最小化或消除径向脉冲延迟（人字形效应）。
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公开(公告)号：US4593397A
公开(公告)日：1986-06-03
申请号：US20576
申请日：1979-03-15
摘要： A laser device with a discharge tube forming a closed envelope with cylindrical end portions connected by an elongated constricted center portion and having external electrodes at the end portions, fed from a source of short pulses with a width measured in nanoseconds, capacity coupled to the discharge plasma. The discharge plasma may include metal vapor, a metal halide, including mercury halide, and internal electrodes may be included in the closed envelope but coupled to the external electrodes by capacity coupling so as to avoid any connections from electrodes passing through the glass or fused silica envelope.
摘要翻译： 一种具有放电管的激光装置，其具有形成封闭的封套，其圆柱形端部由细长的收缩中心部分连接，并且在端部具有从纳米级测量的宽度的短脉冲源馈送的外部电极， 等离子体。 放电等离子体可以包括金属蒸气，包括卤化汞的金属卤化物，并且内部电极可以包括在封闭的封壳中，但是通过电容耦合耦合到外部电极，以避免与通过玻璃或熔融二氧化硅的电极的任何连接 信封。
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10.发明授权
公开(公告)号：US4504953A
公开(公告)日：1985-03-12
申请号：US462819
申请日：1983-02-01
申请人： Charles G. Stevens
发明人： Charles G. Stevens
摘要： A tunable source (11) of coherent infrared energy includes a heat pipe (12) having an intermediate region (24) at which cesium (22) is heated to vaporizing temperature and end regions (27, 28) at which the vapor is condensed and returned to the intermediate region (24) for reheating and recirculation. Optical pumping light (43) is directed along the axis of the heat pipe (12) through a first end window (17) to stimulate emission of coherent infrared energy which is transmitted out through an opposite end window (18). A porous walled tubulation (44) extends along the axis of the heat pipe (12) and defines a region (46) in which cesium vapor is further heated to a temperature sufficient to dissociate cesium dimers which would decrease efficiency by absorbing pump light (43). Efficient generation of any desired infrared wavelength is realized by varying the wavelength of the pump light (43).
摘要翻译： 相干红外能量的可调谐源（11）包括具有中间区域（24）的热管（12），铯（22）被加热到蒸发温度，蒸气冷凝的端部区域（27,28） 返回到中间区域（24），用于再加热和再循环。 光泵（43）通过第一端窗（17）沿着热管（12）的轴线引导，以刺激通过相对端窗（18）传出的相干红外能量的发射。 多孔壁管（44）沿着热管（12）的轴线延伸并且限定了一个区域（46），其中铯蒸气被进一步加热到足以解离铯二聚体的温度，这通过吸收泵浦光而降低效率（43 ）。 通过改变泵浦光的波长（43）来实现任何期望的红外波长的高效产生。
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