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公开(公告)号：US20030202350A1
公开(公告)日：2003-10-30
申请号：US10442114
申请日：2003-05-21
Inventor： Michael MacGregor Mac Dougall , Edward Melcarek
IPC: F21S002/00
CPC classification number: H01S3/09 , F21W2111/00 , F21W2111/06 , H01S3/08 , H01S3/17
Abstract: A high intensity solid state light pulse generator, has a low voltage, low range radio frequency carrier wave generator, the output of which is modulated by a low frequency sweep signal, to generate sonoluminescent light pulses visible to the human eye, within a desired spectrum. The modulating sweep signal can be computer generated in a predetermined mode, for a range of outputs. In one embodiment, a carrier wave at 450 kHz is modulated by way of an input in the audio range of 20 to 20,000 Hz. The colour of the output pulses is held to be a function of the modulating frequency. By selection of a suitable modulating frequency, monochromatic light pulses of a predetermined colour may be provided. A semi-mirror laser technique is used in order to amplify the light pulses, to achieve high intensity bursts of light at reduced frequency. The modulator RF output is a double sideband signal that is amplified by way of a linear amplifier, to drive a pair of physically opposed piezo-ceramic modules, in synchronous, in-phase relation. The piezo-ceramic modules, in the form of annular nullwashersnull are located in mutually spaced relation, at the opposite ends of a glass lens, through which phonon wavefronts are propagated. Photo-transistor sensors located adjacent the glass lens provides a monitoring and feed-back circuit, primarily to ensure satisfactory operation of the beacon, while enabling automatic control of the voltage of the system power supply, and enabling the occurrence of asymmetry in light output to be detected.
Abstract translation: 一种高强度固态光脉冲发生器，具有低电压，低范围射频载波发生器，其输出由低频扫频信号调制，以在所需频谱内产生可见于人眼的声发光光脉冲 。 对于输出范围，调制扫描信号可以以预定模式计算机生成。 在一个实施例中，通过在20至20,000Hz的音频范围内的输入来调制450kHz的载波。 输出脉冲的颜色被保持为调制频率的函数。 通过选择合适的调制频率，可以提供预定颜色的单色光脉冲。 为了放大光脉冲，采用半透镜激光技术，以降低频率实现高强度的光脉冲。 调制器RF输出是通过线性放大器放大的双边带信号，以同步，同相的关系驱动一对物理相对的压电陶瓷模块。 环形“垫圈”形式的压电陶瓷模块位于玻璃透镜的相对端处，彼此间隔开，通过该玻璃透镜传播声子波前。 位于玻璃透镜附近的光电晶体管传感器提供监控和反馈电路，主要用于确保信标的令人满意的操作，同时能够自动控制系统电源的电压，并且能够发出光输出的不对称性 被检测。
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公开(公告)号：US4746484A
公开(公告)日：1988-05-24
申请号：US92987
申请日：1987-09-04
Applicant: Daniel L. Jassby
Inventor： Daniel L. Jassby
Abstract: A nuclear pumped laser capable of producing long pulses of very high power laser radiation is provided. A toroidal fusion reactor provides energetic neutrons which are slowed down by a moderator. The moderated neutrons are converted to energetic particles capable of pumping a lasing medium. The lasing medium is housed in an annular cell surrounding the reactor. The cell includes an annular reflecting mirror at the bottom and an annular output window at the top. A neutron reflector is disposed around the cell to reflect escaping neutrons back into the cell. The laser radiation from the annular window is focused onto a beam compactor which generates a single coherent output laser beam.
Abstract translation: 提供了能够产生超高功率激光辐射的长脉冲的核泵激光器。 环形聚变反应器提供了能量中子，它们被减速剂减慢。 调节的中子被转化为能够泵送激光介质的能量粒子。 激光介质容纳在围绕反应器的环形电池中。 电池包括底部的环形反射镜和顶部的环形输出窗。 中子反射器设置在电池周围，以将逸散的中子反射回电池。 来自环形窗口的激光辐射聚焦到产生单个相干输出激光束的光束压实器上。
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公开(公告)号：US4450568A
公开(公告)日：1984-05-22
申请号：US321118
申请日：1981-11-13
Applicant: John F. Asmus
Inventor： John F. Asmus
CPC classification number: H01S3/09505 , H01S3/09
Abstract: A preconditioning beam is used to excite gas particles preferentially along a channel between two electrodes in a laser chamber. The preconditioning beam may be an electron beam or a laser beam. An electrical discharge between the electrodes is conducted along the channel by the excited gas particles to form a gas embedded plasma pinch. Depending on the profile of the discharge, the pinch may be stable or collapsing. The pinch emits vacuum ultraviolet radiation which photodissociates molecules of the photolytic laser medium confined by the chamber. The dissociation creates a population inversion, initiating lasing activity. A resonator system reflects the developing laser pulse back and forth through the chamber to stimulate further emissions and facilitate pulse amplification. The developed pulse is transmitted by appropriate means.
Abstract translation: 预激光束用于激发气体颗粒，优先沿着激光室中的两个电极之间的通道。 预处理光束可以是电子束或激光束。 电极之间的放电通过激发的气体颗粒沿通道进行，以形成气体封入的等离子体夹紧。 取决于放电的轮廓，夹点可能会稳定或塌陷。 夹持发射真空紫外线辐射，其使由腔室限制的光解激光介质的分子光合作用。 解离造成人口倒数，启动激光活动。 谐振器系统通过腔室来反射显影的激光脉冲，以刺激进一步的发射并促进脉冲放大。 开发的脉冲通过适当的方式传输。
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公开(公告)号：US4414671A
公开(公告)日：1983-11-08
申请号：US308714
申请日：1981-10-05
Applicant: William E. Wells, Jr. , S. Douglas Marcum , Lawrence W. Downes , Richard A. Tilton
Inventor： William E. Wells, Jr. , S. Douglas Marcum , Lawrence W. Downes , Richard A. Tilton
CPC classification number: H01S3/223 , H01S3/09 , H01S3/09707
Abstract: Electromagnetic radiation (10) is provided in a gas mixture (12) including helium in the X(1) state and nitrogen in the Y(1) state. The helium is pumped to excite a high population density of its atoms from the X(1) state to the X(2) state; and photons (15) of suitable frequency are injected into the mixture (12) to excite, via a three-body radiative collision of an atom of X(2) with a molecule of Y(1) and a photon (15): a high population density of molecules of the nitrogen from the Y(1) state to the Y(3) state, followed by a substantially simultaneous return of a substantial portion of the excited helium atoms to the X(1) state and a substantial depopulation of the Y(3) state of the nitrogen, causing the molecules thereof to drop to the lower energy Y(2) state, thereby stimulating the emission from the nitrogen of two photons (10) at the same wavelength for each absorbed photon (15), and thus providing a total quantity of photon emission (10) with sufficient gain for amplification of electromagnetic radiation (10), and finally resulting in the depopulation of the molecules in the Y(2) state by autoionization.
Abstract translation: 在包括X（1）中的氦和Y（1）状态的氮气的气体混合物（12）中提供电磁辐射（10）。 泵送氦气以将其原子的高人口密度从X（1）状态激发到X（2）状态; 并且将适当频率的光子（15）注入到混合物（12）中，以通过X（2）的原子与Y（1）的分子和光子（15）的三体辐射碰撞来激发： 从Y（1）状态到Y（3）状态的氮的分子的高人口密度，随后大部分激发的氦原子的大部分同时返回到X（1）状态，并且实质上减少 氮的Y（3）状态，使其分子下降到较低的能量Y（2）状态，由此针对每个吸收的光子（15）刺激相同波长的两个光子（10）的氮的发射， ，从而提供具有足够增益用于放大电磁辐射（10）的光子发射总量（10），并且最终导致通过自动离子化分解为Y（2）状态的分子。
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公开(公告)号：US4257013A
公开(公告)日：1981-03-17
申请号：US958623
申请日：1978-11-08
Applicant: Charles T. Pike , Horace W. Furumoto , Lawrence A. Levin
Inventor： Charles T. Pike , Horace W. Furumoto , Lawrence A. Levin
CPC classification number: H01S3/2383 , B01D59/50 , H01S3/09 , H01S3/1022 , H01S3/1066 , H01S3/107 , H01S3/0057
Abstract: Method and apparatus for achieving isotopically selective adiabatic inversion, particularly for improved isotope separation efficiency. In a preferred embodiment for practicing the invention, chirped laser radiation induces photoionization of a vapor state material in isotopically selective excitation and ionization energy steps. A frequency sweep or "chirp" is provided in the excitation laser radiation at a controlled rate and over a range of frequencies which is limited to prevent loss of selectivity in the excitation. The frequency swept radiation has a theoretical capability of producing 100% inversion of ground state particles in the vapor. The features of the invention additionally permit excitation of a material to very high energy states useful in producing high frequency, ultraviolet lasing.
Abstract translation: 实现同位素选择性绝热反演的方法和装置，特别是改善同位素分离效率。 在实施本发明的优选实施例中，啁啾激光辐射在同位素选择性激发和电离能量步骤中诱导气态物质的光离子化。 在激发激光辐射中以受控的速率和频率范围提供频率扫描或“啁啾”，其频率被限制以防止激励中的选择性损失。 频率扫描辐射具有在蒸汽中产生基态颗粒100％反转的理论能力。 本发明的特征还允许将材料激发到用于生产高频，紫外线激光的非常高的能量状态。
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Patent Agency Ranking
公开(公告)号：US4081763A
公开(公告)日：1978-03-28
申请号：US760581
申请日：1977-01-19
Applicant: Natalya Andreevna Vlasenko , Zhanneta Alexandrovna Pukhly
CPC classification number: H01S3/09 , H01S3/0632 , H01S5/30
Abstract: A solid-state laser in which an inverse population is formed at the levels of dope ions of the elements with unfilled electron shells by means of impact excitation of said ions with hot carriers, made on the basis of an electroluminescent capacitor in which the layer of electroluminescent substance is optically homogeneous, doped with said elements, and serves as the active element of the laser. The electrodes of the capacitor perform the functions of the Fabry-Perot cavity mirrors and those of the electrodes in order to produce the electrical field required to excite the active element. One of these electrodes is partially transparent to the laser emission.
Abstract translation: 一种固体激光器，其中通过所述离子与热载流子的冲击激发在具有未填充电子壳的元件的掺杂离子的水平上形成反向群体，其基于电致发光电容器制成，其中所述层 电致发光物质是光学上均匀的，掺杂有所述元件，并且用作激光器的有源元件。 电容器的电极执行法布里 - 珀罗腔镜和电极的电极的功能，以产生激发有源元件所需的电场。 这些电极中的一个对激光发射部分透明。
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公开(公告)号：US4004250A
公开(公告)日：1977-01-18
申请号：US635456
申请日：1975-11-26
Applicant: William F. Krupke
Inventor： William F. Krupke
Abstract: A method and apparatus for obtaining laser action between an upper energy level and a lower energy level of a gaseous medium, which comprises populating the upper energy level to some degree (short of achieving a conventional inverted population) by any suitable pumping means, and thereafter establishing an inverted population by transiently and selectively depumping the lower energy level such as by exposing the medium to an intense source of radiation which selectively causes the transformation of the lower energy level species to some other energy level. Thus, a thermally pumped/optically depumped gas laser system is produced.
Abstract translation: 一种用于获得气体介质的上能量级和较低能量级之间的激光作用的方法和装置，其包括通过任何合适的泵送装置在一定程度上（通过任何合适的泵送装置来达到上述能量水平达不到常规反向群体） 通过瞬时和选择性地降低能量水平来建立反转群体，例如通过将培养基暴露于强烈的辐射源，其选择性地导致较低能级物种转化为某种其他能级。 因此，制造了热泵/光学去除的气体激光系统。
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公开(公告)号：US3952263A
公开(公告)日：1976-04-20
申请号：US512810
申请日：1974-10-04
Applicant: David A. McArthur , Philip B. Tollefsrud
Inventor： David A. McArthur , Philip B. Tollefsrud
Abstract: A laser system and method for exciting lasing action in a molecular gas lasing medium which includes cooling the lasing medium to a temperature below about 150 K and injecting fission fragments through the lasing medium so as to preferentially excite low lying vibrational levels of the medium and to cause population inversions therein. The cooled gas lasing medium should have a mass areal density of about 5 .times. 10.sup.-.sup.3 grams/square centimeter, relaxation times of greater than 50 microseconds, and a broad range of excitable vibrational levels which are excitable by molecular collisions.
Abstract translation: 一种用于在分子气体激光介质中激发激光激发作用的激光系统和方法，其包括将激光介质冷却至低于约150K的温度，并且通过激光介质注入裂变碎片，以优先激发介质的低位振动水平，并且 导致人口倒数。 冷却的气体激光介质应具有约5×10 -3克/平方厘米的质量面密度，大于50微秒的松弛时间以及可通过分子碰撞激发的宽范围的可激发振动水平。
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公开(公告)号：US3795874A
公开(公告)日：1974-03-05
申请号：US3795874D
申请日：1972-11-03
Applicant: ATOMIC ENERGY COMMISSION
Inventor： YU LI PAN , BERNHARDT A , SIMPSON J
IPC: H01S3/09 , H01S3/0971
CPC classification number: H01S3/09 , H01S3/09713 , H01S3/09716
Abstract: An apparatus for optically pumping a transversely excited, high pressure gaseous laser system by means of a double electrical discharge using a capacitor-bank network and electronic circuitry for implementing the method. Laser energy pulse outputs of approximately 17 Joules/liter at efficiencies of 24% have been obtained by the inventive concept.
Abstract translation: 一种用于通过使用电容器组网络的双重放电和用于实现该方法的电子电路来光学地泵浦横向激发的高压气体激光系统的装置。 通过本发明的概念已经获得了约17焦耳/升的效率为24％的激光能量脉冲输出。
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60.发明授权Q-switch for synchronizing mode-locked laser pulse trans with external events 失效用于与外部事件同步模式锁定激光脉冲转换的Q开关
公开(公告)号：US3760295A
公开(公告)日：1973-09-18
申请号：US3760295D
申请日：1972-05-22
Applicant: IBM
CPC classification number: H01S3/1112 , G02F1/3523 , H01S3/09 , H01S3/1061 , H01S3/11
Abstract: A capacitive discharge in cesium vapor is used to realize an externally controllable Q-switch synchronizing the appearance of pulse trains from a passively mode-locked neodymium glass laser with other events occurring on a microsecond time scale.
Abstract translation: 铯蒸气中的电容放电用于实现外部可控的Q开关，使来自被动模式锁定的钕玻璃激光器的脉冲串的出现同步于微秒级的其他事件。
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