公开(公告)号：US07298545B2

公开(公告)日：2007-11-20

申请号：US11318234

申请日：2005-12-23

申请人： Andrew H. Kung ,  Shining Zhu ,  Shih-Yu Tu ,  Zhida Gao

发明人： Andrew H. Kung ,  Shining Zhu ,  Shih-Yu Tu ,  Zhida Gao

IPC分类号： G02F1/35 ,  G02F2/02

CPC分类号： G02F1/39 ,  G02F1/3558 ,  G02F2202/20 ,  G02F2203/05

摘要： A tunable coherent light source includes a pump laser for generating a pump beam and an optical parametric oscillator including a crystal exhibiting an output curve for a pump beam of a defined wavelength, the output curve defining wavelengths of signal and idler outputs based on periodically poled grating periods of the crystal. The crystal has a plurality of segments associated with a plurality of grating periods of the output curve, each segment of the plurality of segments having a different crystal structure. At least one of the plurality of segments comprises a crystal structure combining at least two of the grating periods A heating device heats the crystal to an elevated operating temperature and is adjustable for adjusting the output wavelengths of each of the segments.

摘要翻译： 可调谐相干光源包括用于产生泵浦光束的泵浦激光器和包括具有用于定义波长的泵浦光束的输出曲线的晶体的光学参数振荡器，该输出曲线基于周期性极化光栅来定义信号波形和惰轮输出 水晶时期。 晶体具有与输出曲线的多个光栅周期相关联的多个段，多个段中的每个段具有不同的晶体结构。 多个区段中的至少一个包括结合至少两个光栅周期的晶体结构。加热装置将晶体加热到升高的工作温度，并且可调节以调节每个段的输出波长。

公开(公告)号：US4577122A

公开(公告)日：1986-03-18

申请号：US566275

申请日：1983-12-28

申请人： Andrew H. Kung

发明人： Andrew H. Kung

IPC分类号： G02F1/355 ,  H03F7/00

CPC分类号： G02F1/355

摘要： A pulsed free expansion jet of gas interacts with a high energy laser beam pulse to develop higher order odd harmonics of the laser beam. The pulsed jet of gas is introduced into a vacuum chamber so that the gas expands at a supersonic rate. As the pulsed jet of gas enters the vacuum chamber, it interacts with the laser beam pulse which induces a polarization in the gas particles. The induced polarization causes the odd order harmonics of the laser beam to be developed, extending the wavelengths of the laser beam to the VUV and XUV spectral regions.

摘要翻译： 气体的脉冲自由膨胀射流与高能量激光束脉冲相互作用，以产生激光束的高阶奇次谐波。 将脉冲喷射的气体引入真空室，使得气体以超音速膨胀。 随着脉冲射流的气体进入真空室，它与激光束脉冲相互作用，这激发了气体颗粒中的极化。 感应极化导致激光束的奇数阶谐波被显影，将激光束的波长延伸到VUV和XUV光谱区域。

公开(公告)号：US20090038375A1

公开(公告)日：2009-02-12

申请号：US11994056

申请日：2006-06-26

申请人： Klaus BREUER ,  Andrew H. Kung ,  Andras Miklos ,  Judit Angster ,  Klaus Sedlbauer

发明人： Klaus BREUER ,  Andrew H. Kung ,  Andras Miklos ,  Judit Angster ,  Klaus Sedlbauer

IPC分类号： G01N29/02

CPC分类号： G01N21/1702 ,  G01N2021/1704 ,  G01N2291/02809

摘要： The invention relates to a photoacoustic detector including an acoustically open measuring area which is not completely surrounded by a housing. The detector includes an arrangement for introducing excitation light into the measuring area, such that the excitation light can be absorbed by absorbent materials which are located in the measuring area and which are used to produce acoustic energy. The invention also relates to a detector which includes at least one acoustic sensor and an arrangement is provided in order to concentrate the acoustic energy, in order to reach a local maximum of the acoustic pressure on at least one position. The at least one sensor is arranged in the vicinity of the at least one position, whereon the local maximum of the produced acoustic pressure is present or can be produced. The invention also relates to an associated method.

摘要翻译： 本发明涉及一种光声检测器，包括未被壳体完全包围的声学测量区域。 检测器包括用于将激发光引入测量区域的布置，使得激发光可以被位于测量区域中并被用于产生声能的吸收材料吸收。 本发明还涉及一种检测器，其包括至少一个声学传感器，并且提供了一种用于集中声能的装置，以便在至少一个位置上达到声压的局部最大值。 所述至少一个传感器布置在所述至少一个位置附近，其中存在或可以产生产生的声压的局部最大值。 本发明还涉及一种相关联的方法。

公开(公告)号：US6005878A

公开(公告)日：1999-12-21

申请号：US146654

申请日：1998-09-03

申请人： Andrew H. Kung ,  Jr-i Lee

发明人： Andrew H. Kung ,  Jr-i Lee

IPC分类号： G02F1/35 ,  G02F1/37 ,  H01S3/10

CPC分类号： G02F1/3534 ,  G02F1/37 ,  G02F2001/3542

摘要： The invention features an apparatus providing electromagnetic radiation including: a first non-linear optical crystal for converting input radiation from a laser into intermediate radiation; a second non-linear optical crystal for converting the intermediate radiation into output radiation; and a plurality of optics forming an optical cavity that encloses the first and second non-linear optical crystals, substantially confines and resonates the intermediate radiation, and has a cavity length matching the cavity length of the laser to within less than the coherence length of the input radiation. The apparatus can be used to convert the output from a multimode, diode-pumped, solid-state laser into high power ultraviolet radiation.

摘要翻译： 本发明的特征在于一种提供电磁辐射的装置，包括：第一非线性光学晶体，用于将来自激光器的输入辐射转换为中间辐射; 用于将中间辐射转换成输出辐射的第二非线性光学晶体; 并且形成包围第一和第二非线性光学晶体的光学腔的多个光学器件基本上限制和谐振中间辐射，并且具有与激光器的腔长度匹配的腔长度小于相邻长度的相干长度 输入辐射。 该装置可用于将来自多模，二极管泵浦，固态激光器的输出转换成大功率紫外线辐射。

公开(公告)号：US4760840A

公开(公告)日：1988-08-02

申请号：US942362

申请日：1986-12-16

申请人： George R. Fournier, Jr. ,  Andrew H. Kung ,  Jack W. McAninch

发明人： George R. Fournier, Jr. ,  Andrew H. Kung ,  Jack W. McAninch

IPC分类号： A61B18/00 ,  A61B18/20 ,  A61B18/22 ,  A61B18/24 ,  A61M13/00 ,  A61B17/36

CPC分类号： A61B18/24 ,  A61B18/201 ,  A61B2018/2272 ,  A61B2018/2283 ,  A61B2218/006 ,  A61B2218/008 ,  A61M13/003

摘要： An endoscopic laser instrument is adapted to treat selected areas of body tissue, such as the treatment and evaporation of tumors occurring on the inner of a bladder. The instrument comprises an outer tubular sheath having an optical fiber extending therethrough to emit a laser beam onto an adjustable mirror that reflects the laser beam exiting the fiber to selected areas of the bladder without changing the character of divergence of the beam once it has emerged from the fiber. A standard endoscope viewing optic is mounted in the sheath to permit a surgeon to visually inspect the bladder through a wide visual field. A gas, such as carbon dioxide, is continuously circulated through the instrument and into the bladder for inflation and purging purposes.

摘要翻译： 内窥镜激光仪器适于治疗身体组织的选定区域，例如在膀胱内部发生的肿瘤的治疗和蒸发。 仪器包括外管状护套，其具有延伸穿过其中的光纤，以将激光束发射到可调节的反射镜上，该反射镜将离开光纤的激光束反射到膀胱的选定区域，而不会改变波束的发散特性，一旦其从 纤维。 标准的内窥镜观察光学器件安装在护套中，以允许外科医生通过宽视野目视检查膀胱。 诸如二氧化碳的气体连续循环通过仪器并进入膀胱以用于充气和清洗目的。