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公开(公告)号：US08897326B2
公开(公告)日：2014-11-25
申请号：US12555329
申请日：2009-09-08
IPC分类号： H01S3/13 , H01S3/0941 , H01S3/091 , H01S3/11 , H01S3/081 , H01S3/10 , H01S3/04 , H01S3/109 , H01S3/131
CPC分类号： H01S3/0912 , H01S3/0407 , H01S3/0816 , H01S3/09415 , H01S3/10069 , H01S3/109 , H01S3/11 , H01S3/13 , H01S3/1312
摘要： In a method, a gain medium is provided having an absorption coefficient that varies with wavelength. An absorption coefficient curve of the absorption coefficient or a range of wavelengths comprises peaks and valleys. A pump module is operated to output pump energy at an operating wavelength within one of the valleys, at which the absorption coefficient is approximately less than 40% of the absorption coefficient at an adjacent peak of the absorption coefficient curve defining the valley. The pump energy is directed through the gain medium. A portion of the pump energy is absorbed with the gain medium and laser light is emitted from the gain medium responsive to the absorbed pump energy. The non-absorbed pump energy (feedback pump energy) is fed back to the pump module. The operating wavelength of the pump energy is stabilized using the feedback pump energy.
摘要翻译： 在一种方法中，提供具有随波长变化的吸收系数的增益介质。 吸收系数或波长范围的吸收系数曲线包括峰和谷。 操作泵模块以在一个谷内的工作波长处输出泵浦能量，其中吸收系数大约小于限定谷的吸收系数曲线的相邻峰值处的吸收系数的40％。 泵浦能量被引导通过增益介质。 泵浦能量的一部分被增益介质吸收，并且响应于吸收的泵浦能量而从增益介质发射激光。 未吸收的泵浦能量（反馈泵能量）被反馈到泵模块。 使用反馈泵能量来稳定泵浦能量的工作波长。
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公开(公告)号：US09531148B2
公开(公告)日：2016-12-27
申请号：US12980014
申请日：2010-12-28
申请人： Rongwei Jason Xuan , Russel E. Klein , Michael A. Scott , James E. Johnson , Edward D. Reed, Jr. , Xirong Yang
发明人： Rongwei Jason Xuan , Russel E. Klein , Michael A. Scott , James E. Johnson , Edward D. Reed, Jr. , Xirong Yang
CPC分类号： H01S3/061 , H01S3/025 , H01S3/0407 , H01S3/0817 , H01S3/109 , H01S3/11
摘要： A laser resonator comprises a cylindrical gain medium, a cooling system and a coupling member. The cylindrical gain medium comprises a central axis, an outer side surface, two opposing end faces and a first depression in the outer side surface. The cooling system comprises a cooling jacket disposed around the gain medium that defines a cooling cavity, in which cooling fluid is guided over the side surface of the gain medium. In one embodiment, the cooling jacket comprises a second depression. The coupling member is received within the first and second depressions. Movement of the first depression along the central axis relative to the cooling jacket is restricted by the coupling member.
摘要翻译： 激光谐振器包括圆柱形增益介质，冷却系统和耦合构件。 圆柱形增益介质包括中心轴线，外侧表面，两个相对的端面和外侧表面中的第一凹陷。 冷却系统包括设置在增益介质周围的冷却套，所述冷却套限定冷却腔，冷却流体在增益介质的侧表面上被引导。 在一个实施例中，冷却套包括第二凹陷。 联接构件被容纳在第一和第二凹部内。 第一凹陷沿中心轴线相对于冷却套的移动受到联接构件的限制。
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3.发明授权
公开(公告)号：US5254114A
公开(公告)日：1993-10-19
申请号：US745269
申请日：1991-08-14
CPC分类号： A61B18/24 , A61B2017/22008 , A61B2018/2272
摘要： A medical laser delivery system is disclosed which includes a laser generating a high power, pulsed, treatment beam. The beam is coupled to an optical fiber which is placed adjacent to a tissue site immersed in a fluid medium. The wavelength of the laser light and the energy of the pulses is selected so that the fluid medium will be quickly vaporized creating a vapor bubble around the end of the fiber. The end surface of the fiber is angled in a manner such that after the vapor bubble is formed, the laser output will be totally internally reflected at the end surface and be redirected out of the side of the fiber.
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公开(公告)号：US4553244A
公开(公告)日：1985-11-12
申请号：US603809
申请日：1984-04-25
IPC分类号： H01S3/08
CPC分类号： H01S3/08081
摘要： The annular energy distribution in the output beam of a laser having an unstable resonator is evenly distributed across the entire beam profile by a synthesizer comprising a pair of mirrors adjacent to the output end of the resonator and operative on the output beam to redirect part of the beam from the annular outer portion to the energy-vacant central portion. One of the pair of mirrors is partially optically transmissive and concavely shaped and is disposed to reflect and converge part of the outer beam portion toward the other mirror and to transmit the balance. The other mirror is highly reflective and convexly shaped and is disposed to redirect and collimate the reflected beam part within the central portion toward the concave mirror parallel to the outer beam portion. Part of the twice reflected beam is transmitted through the concave mirror and the balance is again reflected and further converged toward the convex mirror as the cycle is repeated several times to synthesize an output beam with a substantially uniform energy profile.
摘要翻译： 具有不稳定谐振器的激光器的输出光束中的环形能量分布由包括与谐振器的输出端相邻的一对反射镜的合成器均匀分布在整个光束轮廓上，并在输出光束上操作以重定向部分 梁从环形外部部分到能量空的中心部分。 一对反射镜中的一个是部分透光的并且是凹形的，并且设置成将外光束部分的一部分反射并会聚到另一个反射镜并透射天平。 另一个反射镜是高反射性和凸形的，并且被设置成使平行于外光束部分的中心部分内的反射光束部分朝向凹面镜重定向和准直。 两次反射光束的一部分通过凹面镜透射，并且平衡再次被反射并进一步会聚到凸面镜，因为该周期被重复多次以合成具有基本上均匀的能量分布的输出光束。
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公开(公告)号：US4598405A
公开(公告)日：1986-07-01
申请号：US565567
申请日：1983-12-27
IPC分类号： H01S3/115
CPC分类号： H01S3/115
摘要： Laser apparatus with an electro-optic Q-switch assembly comprises a lasing medium which produces an unpolarized light beam when pumped, a polarizing beam splitter dividing the unpolarized beam into two orthogonally polarized parallel sub-beams, and a totally reflecting turning element which returns each sub-beam to the beam splitter along the path of the other sub-beam. A Q-switch is located in the path of one of the sub-beams. When the Q-switch is energized, the reflected polarization-shifted sub-beams are recombined at the splitter and pass through the lasing medium and adjacent partially-reflecting element as the output. When the Q-switch is deenergized, the sub-beams are dumped at the splitter which prevents the laser from oscillating.
摘要翻译： 具有电光Q开关组件的激光装置包括激光器介质，当泵浦时产生非偏振光束;偏振分束器将非偏振光束分成两个正交偏振的平行子光束;以及全反射转动元件， 沿着另一个子光束的路径分束到分束器。 Q开关位于其中一个子光束的路径中。 当Q开关通电时，反射的偏振偏移子光束在分离器处重新结合，并通过激光介质和相邻的部分反射元件作为输出。 当Q开关断电时，子光束被倾倒在分离器上，防止激光器振荡。
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