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公开(公告)号：US4964735A
公开(公告)日：1990-10-23
申请号：US335000
申请日：1989-04-07
CPC分类号： G01J1/4257 , G01D5/26 , G01K17/003 , Y10S33/21
摘要： An apparatus (12) for providing information about the power and position of a high laser beam includes a heat absorbing body (46) having a target area within which the laser beam is directed. Position information is provided by a plurality of thermocouples (46) connected in series in a circular array and located radially outward of the target area. In the preferred embodiment, the thermocouple array is divided into four quadrants (60-66), each quadrant generating a voltage proportional to the heat flow in the body at that location. A comparison of the voltages generated by each of the quadrants will provide information about the position of the laser beam with respect to the quadrants. In addition, by summing the output of the quadrants, information about the total power of the beam can be derived.
摘要翻译： 用于提供关于高激光束的功率和位置的信息的装置（12）包括具有目标区域的吸热体（46），激光束被引导到该目标区域内。 位置信息由多个以圆形阵列串联连接并位于目标区域的径向外侧的热电偶（46）提供。 在优选实施例中，热电偶阵列被分成四个象限（60-66），每个象限产生与该位置处的身体中的热流成比例的电压。 由每个象限产生的电压的比较将提供关于激光束相对于象限的位置的信息。 另外，通过对象限的输出求和，可以得出关于光束总功率的信息。
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公开(公告)号：US07618414B2
公开(公告)日：2009-11-17
申请号：US11347782
申请日：2006-02-03
IPC分类号： A61B18/18
CPC分类号： A61B18/203 , A61B2018/00005 , A61B2018/00023 , A61B2018/00029 , A61B2018/00041 , A61B2018/00452 , A61B2018/00458 , A61B2018/00476
摘要： A hair removal device (22) includes a cooling surface (34) which is used to contact the skin (6) prior to exposure to hair tissue-damaging laser light (74) passing from a radiation source (36) through a recessed window (46). The window is laterally offset from the cooling surface and is spaced apart from the cooling surface in a direction away from the patient's skin to create a gap between the window and the skin. The window preferably includes both an inner window (46) and an outer, user-replaceable window (48). The laser-pulse duration is preferably selected according to the general diameter of the hair.
摘要翻译： 脱毛装置（22）包括冷却表面（34），该冷却表面用于在暴露于从辐射源（36）通过凹入窗口（36）的毛发组织损坏的激光（74）之前接触皮肤（6） 46）。 窗口从冷却表面横向偏移并且在远离患者皮肤的方向上与冷却表面间隔开，以在窗口和皮肤之间形成间隙。 窗口优选地包括内窗（46）和外用户可替换的窗（48）。 优选根据毛发的总直径选择激光脉冲持续时间。
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公开(公告)号：US07465307B2
公开(公告)日：2008-12-16
申请号：US11265716
申请日：2005-11-02
IPC分类号： A61N5/06
CPC分类号： A61B18/203 , A61B2018/00005 , A61B2018/00023 , A61B2018/00029 , A61B2018/00041 , A61B2018/00452 , A61B2018/00458 , A61B2018/00476
摘要： A hair removal device (22) includes a cooling surface (34) which is used to contact the skin (6) prior to exposure to hair tissue-damaging laser light (74) passing from a radiation source (36) through a recessed window (46). The window is laterally offset from the cooling surface and is spaced apart from the cooling surface in a direction away from the patient's skin to create a gap between the window and the skin. The window preferably includes both an inner window (46) and an outer, user-replaceable window (48). The laser-pulse duration is preferably selected according to the general diameter of the hair.
摘要翻译： 脱毛装置（22）包括冷却表面（34），该冷却表面用于在暴露于从辐射源（36）通过凹入窗口（36）的毛发组织损坏的激光（74）之前接触皮肤（6） 46）。 窗口从冷却表面横向偏移并且在远离患者皮肤的方向上与冷却表面间隔开，以在窗口和皮肤之间形成间隙。 窗口优选地包括内窗（46）和外用户可替换的窗（48）。 优选根据毛发的总直径选择激光脉冲持续时间。
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公开(公告)号：US06569155B1
公开(公告)日：2003-05-27
申请号：US09524077
申请日：2000-03-13
IPC分类号： A61B1818
CPC分类号： A61B18/203 , A61B2018/00005 , A61B2018/00452 , A61B2018/00458 , A61B2018/00476
摘要： A radiation delivery module (8) includes a body (48) supportable on a patient's skin and defines a skin surface plane generally aligned with the patient's skin surface (40). A radiation source (22) is mounted to the body and produces a beam (34) of tissue-damaging radiation directed transverse to and at the skin surface plane. The radiation beam creates a radiation spot (42) having a length (36) and a width (44) at the skin surface plane, the length being at least about 5 to 10 times the width. A number of scanned diode laser radiation sub-sources (64) each directing a radiation beam component (66) at the radiation spot may be used. The radiation source may include a rod lens as a focusing optical element. The radiation delivery module may also include a radiation source translator (18) so that the radiation spot moves in a direction generally perpendicular to the length of the radiation spot.
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公开(公告)号：US5100231A
公开(公告)日：1992-03-31
申请号：US344980
申请日：1989-04-27
IPC分类号： G01J1/42
CPC分类号： G01J1/4257
摘要： A method and apparatus for determining the quality of a multimode laser beam (10). In the preferred embodiment, the apparatus includes a lens (32) for creating a transformed or imaged waist from the input beam. The location of the transformed beam waist and its diameter are then determined. These steps can be carried out by chopping the beam using a rotating hub (34) having apertures (36,38) for selectively passing the beam. Preferably, one of the apertures has a pair of 45.degree. knife edges (40,42). The transmission of the beam past the knife edge is monitored by a detector (30). In operation, the lens focal position is varied while the transmission of the beam past the knife edge is monitored in order to locate and measure the diameter of the transformed waist. The diameter of the beam at one other known location is measured. A processor then calculates beam quality by fitting these measurements to a mathematical model. Once the quality of the beam is calculated, the location of the original beam waist and its diameter can be derived. Once all of the beam parameters are derived, the propagation characteristics of the beam can be predicted.
摘要翻译： 一种用于确定多模激光束（10）的质量的方法和装置。 在优选实施例中，该装置包括用于从输入光束产生变形或成像的腰部的透镜（32）。 然后确定变形的束腰的位置及其直径。 这些步骤可以通过使用具有用于选择性地通过光束的孔（36,38）的旋转毂（34）斩波来进行。 优选地，一个孔具有一对45°刀刃（40,42）。 通过检测器（30）监测光束通过刀刃的透射。 在操作中，透镜焦点位置变化，同时监测光束穿过刀刃的透射，以定位和测量变形腰部的直径。 测量另一个已知位置处的梁的直径。 然后，处理器通过将这些测量拟合到数学模型来计算光束质量。 一旦计算了光束的质量，就可以得出原始光束腰部的位置及其直径。 一旦导出了所有的光束参数，就可以预测光束的传播特性。
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公开(公告)号：US5052017A
公开(公告)日：1991-09-24
申请号：US535185
申请日：1990-06-08
CPC分类号： B23K26/0643 , B23K26/06 , B23K26/0665 , H01S3/076 , H01S3/081 , H01S3/08072
摘要： A laser system employing one or more mirror sets having substantially astigmatism-free focusing power sufficient to maintain a desired laser beam diameter, for example, to compensate for thermally-induced distributed lensing. In one class of preferred embodiments, the invention is a high power gas laser system having a folded optical cavity with a periodic intracavity refocusing means to compensate for distributed negative thermal lensing in the hot plasma that comprises the active medium, and thus maintain a substantially constant beam diameter throughout the optical cavity. The periodic intracavity refocusing means preferably includes a corner mirror set (including at least one curved mirror and at least one other mirror) at each corner of the folded optical cavity. In one preferred embodiment, each corner mirror set is a mirror pair including a spherical mirror and cylindrical mirror. In another preferred embodiment, each corner mirror set comprises three mirrors (including three spherical mirrors, or two spherical mirrors and a planar mirror). In another class of preferred embodiments, the inventive focusing mirror sets are not included within the optical cavity of a high power laser, but instead, one or more such focusing mirror sets are included within the output beam delivery optical components of a high power laser. For example, one of the inventive focusing mirror sets may replace a conventional lens to direct the output beam of a high power laser system along a desired path and maintain a desired beam diameter.
摘要翻译： 一种采用一个或多个镜组的激光系统，其具有足以维持期望的激光束直径的基本上无像散的聚焦功率，例如以补偿热致分布透镜。 在一类优选实施例中，本发明是一种高功率气体激光系统，其具有带有周期性腔内重聚焦装置的折叠光学腔，以补偿包含活性介质的热等离子体中分布的负热透镜，从而保持基本恒定 整个光学腔内的光束直径。 周期性腔内再聚焦装置优选地包括在折叠光学腔的每个拐角处的角镜组（包括至少一个弯曲镜和至少一个其它反射镜）。 在一个优选实施例中，每个角镜组是包括球面镜和圆柱形镜的镜对。 在另一个优选实施例中，每个角镜组包括三个反射镜（包括三个球面镜，或两个球面镜和平面镜）。 在另一类优选实施例中，本发明的聚焦镜组不包括在大功率激光器的光腔内，而是一个或多个这样的聚焦镜组包括在大功率激光器的输出光束传送光学部件内。 例如，本发明的聚焦镜组之一可以替代传统的透镜，以沿着期望的路径引导大功率激光系统的输出光束并保持期望的光束直径。
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公开(公告)号：US4648093A
公开(公告)日：1987-03-03
申请号：US648005
申请日：1984-09-06
CPC分类号： H01S3/09705
摘要： A high voltage power supply for energizing a gas discharge laser in either an enhanced pulse mode or a continuous mode, which power supply is simple to manufacture and minimizes the voltage that other parts of the energizing circuit are required to withstand. The voltage provided by a high voltage DC power supply is boosted by the interaction of first and second reactive components. A first reactance is provided which stores charges at the boosted potential. This charge is provided to the laser to initiate electrical breakdown. The second reactance generates a potential which is additive with respect to the potential provided by the high voltage DC power supply so that the first reactance is charged to a potential equal to the generated potential plus the potential of the high voltage power supply.
摘要翻译： 用于以增强的脉冲模式或连续模式激励气体放电激光器的高压电源，该电源易于制造并且使得激励电路的其它部分需要承受的电压最小化。 由高压直流电源提供的电压通过第一和第二无功元件的相互作用来提升。 提供了在升压电位下存储电荷的第一电抗。 该电荷被提供给激光器以启动电击穿。 第二电抗产生相对于由高压DC电源提供的电位是相加的电位，使得第一电抗被充电到等于所产生的电位加上高电压电源的电位的电位。
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公开(公告)号：US4134083A
公开(公告)日：1979-01-09
申请号：US793050
申请日：1977-05-02
摘要： The method of reducing arcing in a high power gas transport laser consists of introducing molecular oxygen into the carbon dioxide mixture in which the glow discharge takes place. The oxygen may be in pure form or may be mixed with nitrogen as in air and is admitted to the recirculating gas mixture in predetermined quantities during operation of the laser. The effect of this addition of oxygen to the circulating gas mixture is to prevent the formation of oxide coatings on the copper electrode surfaces, and specifically on the cathode, thereby eliminating this cause of arcing in the laser.
摘要翻译： 在高功率气体输送激光器中减少电弧的方法包括将分子氧引入发生辉光放电的二氧化碳混合物中。 氧气可以是纯的形式，或者可以像在空气中一样与氮混合，并且在激光器的操作期间以预定的量进入循环气体混合物。 这种向循环气体混合物中加入氧气的效果是防止在铜电极表面上，特别是在阴极上形成氧化物涂层，从而消除激光器中的这种电弧的原因。
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