公开(公告)号：US06532100B1

公开(公告)日：2003-03-11

申请号：US09368342

申请日：1999-08-04

申请人： Jouni P. Partanen ,  Xingkun Wu ,  Gary Reynolds ,  William F. Hug

发明人： Jouni P. Partanen ,  Xingkun Wu ,  Gary Reynolds ,  William F. Hug

IPC分类号： G02F135

CPC分类号： G02F1/35 ,  G02F2001/3505

摘要： Solid state lasers that use non-linear optical crystals to generate frequency tripled or quadrupled output in the ultraviolet have low lifetimes due to damage to the face of the non-linear crystal through which the ultraviolet signal exits. To prevent this damage, the tripling or quadrupling crystal is provided within a controlled environment that is maintained substantially free from contaminants such as silicon-bearing and organic compounds. The tripling or quadrupling crystal is enclosed within a tubular chamber with windows on the ends of the tube that provide optical access to the entrance and exit faces of the tripling or quadrupling crystal. All heating elements and alignment elements for the crystal are outside of the chamber. Because the crystal is stored within the hermetically sealed chamber, contaminants are not available within the environment of the crystal that could interact with the energetic photons of the ultraviolet output of the frequency multiplied solid state laser. The windows and walls of the chamber are preferably made of materials that can be cleaned effectively, such as sapphire or quartz for the windows and stainless steel for the walls and flanges of the chamber.

摘要翻译： 使用非线性光学晶体在紫外线中产生频率三倍或四倍的输出的固态激光器由于对紫外线信号离开的非线性晶体的表面的损坏而具有较低的寿命。 为了防止这种损坏，在受控的环境中提供三倍或四倍的晶体，其基本上不含诸如含硅和有机化合物的污染物。 将三倍或四倍的晶体封闭在管状室内，在管的端部具有窗口，其提供光学进入三重或四重晶体的入口和出口面。 用于晶体的所有加热元件和对准元件都在室外。 因为晶体存储在气密密封的腔室内，污染物在晶体环境中不可用，它们可以与倍频固态激光器的紫外线输出的能量光子相互作用。 房间的窗户和墙壁优选由能够被有效清洁的材料制成，例如用于窗户的蓝宝石或石英，以及用于室的壁和凸缘的不锈钢。

公开(公告)号：US6157663A

公开(公告)日：2000-12-05

申请号：US61796

申请日：1998-04-16

申请人： Xingkun Wu ,  Jouni P. Partanen ,  William F. Hug ,  Hamid Hemmati

发明人： Xingkun Wu ,  Jouni P. Partanen ,  William F. Hug ,  Hamid Hemmati

IPC分类号： H01S3/08 ,  H01S3/0941 ,  H01S3/109 ,  H01S3/091

CPC分类号： H01S3/0941 ,  H01S3/08072 ,  H01S3/109

摘要： A solid-state laser includes a high-absorption coefficient solid-state gain medium such as Nd:YVO.sub.4 that is side pumped with a semiconductor laser diode array. The resonant cavity of the solid-state laser is positioned so that the TEM.sub.00 mode is spaced from the face of the laser through which the laser is pumped by a distance sufficient to reduce diffraction losses but sufficiently near to allow coupling of pump light into the gain mode. The gain medium, the doping level of the gain medium, and the operating temperature of the pump laser are selected to efficiently couple pump light into the gain mode. The pump laser is positioned to side pump the gain medium without collimating or focusing optics between the pump laser and the face of the gain medium. A gap between the pump laser and the gain medium is empirically selected to match the angular extent of the pump laser output light to the height of the gain mode at the position of the gain mode fixed to optimize coupling and diffraction losses.

摘要翻译： 固体激光器包括用半导体激光二极管阵列侧泵浦的高吸收系数固态增益介质，例如Nd：YVO4。 固态激光器的谐振腔被定位成使得TEM00模式与激光器的表面间隔开，激光器的表面通过激光​​器泵浦足够的距离来减少衍射损耗，但足够接近以允许将泵浦光耦合到增益 模式。 选择增益介质，增益介质的掺杂水平和泵激光器的工作温度以有效地将泵浦光耦合到增益模式。 泵浦激光器定位在侧面泵浦增益介质，而不在泵浦激光器和增益介质的面之间准直或聚焦光学元件。 根据经验选择泵浦激光器和增益介质之间的间隙，以将激光输出光的角度范围与固定增益模式位置处的增益模式的高度相匹配，以优化耦合和衍射损耗。

公开(公告)号：US06347101B1

公开(公告)日：2002-02-12

申请号：US09061797

申请日：1998-04-16

申请人： Xingkun Wu ,  Jouni P. Partanen ,  William F. Hug ,  Hamid Hemmati

发明人： Xingkun Wu ,  Jouni P. Partanen ,  William F. Hug ,  Hamid Hemmati

IPC分类号： H01S3098

CPC分类号： H01S3/0941 ,  B33Y30/00 ,  H01S3/08072 ,  H01S3/1022 ,  H01S3/109

摘要： A solid state laser includes a high absorption coefficient solid state gain medium such as Nd:YVO4 that is side pumped with a semiconductor laser diode array. The resonant cavity of the solid state laser is positioned so that the TEM00 mode is spaced from the face of the laser through which the laser is pumped by a distance sufficient to reduce diffraction losses but sufficiently near to allow coupling of pump light into the gain mode. The gain medium, the doping level of the gain medium, and the operating temperature of the pump laser are selected to efficiently couple pump light into the gain mode. The pump laser is positioned to side pump the gain medium without collimating or focusing optics between the pump laser and the face of the gain medium. A gap between the pump laser and the gain medium is empirically selected to match the angular extent of the pump laser output light to the height of the gain mode at the position of the gain mode fixed to optimize coupling and diffraction losses.

摘要翻译： 固态激光器包括用半导体激光二极管阵列侧泵浦的高吸收系数固态增益介质，例如Nd：YVO4。 固态激光器的谐振腔被定位成使得TEM00模式与激光器的表面间隔开，激光器通过该表面泵浦足够的距离以减少衍射损耗，但足够接近以允许将泵浦光耦合到增益模式 。 选择增益介质，增益介质的掺杂水平和泵激光器的工作温度以有效地将泵浦光耦合到增益模式。 泵浦激光器定位在侧面泵浦增益介质，而不在泵浦激光器和增益介质的面之间准直或聚焦光学元件。 根据经验选择泵浦激光器和增益介质之间的间隙，以将激光输出光的角度范围与固定增益模式位置处的增益模式的高度相匹配，以优化耦合和衍射损耗。

公开(公告)号：US06426840B1

公开(公告)日：2002-07-30

申请号：US09791346

申请日：2001-02-23

申请人： Jouni P. Partanen ,  Nansheng Tang ,  Xingkun Wu

发明人： Jouni P. Partanen ,  Nansheng Tang ,  Xingkun Wu

IPC分类号： G02B702

CPC分类号： G02B27/40 ,  B23K26/04 ,  B23K26/0617 ,  B23K26/066 ,  B23K26/067 ,  B23K26/073 ,  B23K26/082 ,  B23K26/382 ,  B29C64/00 ,  B29C64/135 ,  B33Y40/00 ,  G02B7/102 ,  G02B19/0014 ,  G02B19/0052 ,  G02B19/0095 ,  G02B26/128 ,  G02B27/09 ,  G02B27/0955

摘要： An illumination system includes optics capable of adjusting the size of a beam of light and adjusting the focus of the beam of light. Spot size control optics adjusts the overall size of the beam of light and separately adjusts the ellipticity of the beam, primarily in one dimension. Light from the spot size control optics passes to focus control optics that control the overall focus of the beam of light and adjust the astigmatism of the beam by altering the focus position of the beam of light in one dimension. The laser system, the spot size control optics and the focus control optics are within an enclosure. Actuators under remote control from outside of the enclosure adjust both of the spot size control optics and focus control optics in the thermal environment of the illumination system.

摘要翻译： 照明系统包括能够调节光束尺寸并调节光束焦点的光学器件。 光点尺寸控制光学器件调整光束的总体尺寸，并分别主要在一个维度上调整光束的椭圆率。 来自光点尺寸控制光学器件的光通过控制光束的聚焦控制光学器件，通过改变光束在一个维度上的焦点位置来调节光束的散光。 激光系统，光斑尺寸控制光学元件和聚焦控制光学元件在外壳内。 遥控器外部的执行器可以调节照明系统的热环境中的光斑尺寸控制光学元件和聚焦控制光学元件。