公开(公告)号：US20180331489A1

公开(公告)日：2018-11-15

申请号：US15893949

申请日：2018-02-12

申请人： LIGHTSENSE IP LTD.

发明人： Szymon SUCKEWER

IPC分类号： H01S3/108 ,  H01S3/30 ,  H01S3/00 ,  G02B27/14 ,  A61B18/20

CPC分类号： H01S3/1086 ,  A61B18/203 ,  A61B2018/00583 ,  A61F9/008 ,  A61F9/00825 ,  A61F2009/0087 ,  H01S3/005 ,  H01S3/0057 ,  H01S3/0071 ,  H01S3/094076 ,  H01S3/10092 ,  H01S3/1024 ,  H01S3/108 ,  H01S3/11 ,  H01S3/1611 ,  H01S3/1625 ,  H01S3/1636 ,  H01S3/1643 ,  H01S3/2333 ,  H01S3/2391 ,  H01S3/30 ,  H01S3/302 ,  H01S3/305

摘要： Method for producing ultraintense laser pulses in which Stimulated Raman Back-Scattering (SRBS) amplifies and compresses a seed pulse, as well as an inventive compact plasma device which may implement the method. SRBS may be achieved by counter-propagating the seed pulse and a pump pulse through a few millimeter-long plasma having a plasma frequency equal to the difference between the pump and the seed pulse frequencies. Dichroic mirrors may be arranged to provide two amplifying and compression passes through the plasma, allowing greater seed pulse amplification by mitigating Landau damping within the plasma that would occur in a single pass of a plasma of double the length. Alternate examples provide for 2n number of amplification and compression passes by providing n short plasma columns, where n≥2, and additional, appropriately arranged dichroic mirrors. The compact size of the device, and the ultraintense, ultrashort pulses it emits, suit the device to dermatological applications.

公开(公告)号：US20150009495A1

公开(公告)日：2015-01-08

申请号：US13933142

申请日：2013-07-02

申请人： Macau University of Science and Technology

发明人： Jianqing LI ,  Ben XU

IPC分类号： G01J3/44

CPC分类号： H01S3/305 ,  G01J3/10 ,  H01S3/0092 ,  H01S3/1611 ,  H01S3/1643 ,  H01S2302/00

摘要： A method of generating Raman laser for inducing fluorescence of pyrene and a system thereof is disclosed. The system comprises a pulsed laser, a frequency doubling crystal, a frequency quadrupling crystal, a light filter unit, a Raman cell, a prism, an optical diaphragm, an object lens and an optical fiber. The method of the present invention comprises the steps of emitting a laser beam pulse through the crystals as mentioned above such that a mixture of lasers of different wavelength is generated. The light filter unit is used to obtain a pure pump laser from the mixture of lasers. Finally, the Raman laser is obtained by directing the pump laser into a Raman cell, extracting different orders of stimulated Raman scattering lasers emitted from the Raman cell by the prism and selecting a predetermined order of stimulated Raman scattering laser by the optical diaphragm.

摘要翻译： 公开了一种生成用于诱导芘的荧光的拉曼激光的方法及其系统。 该系统包括脉冲激光器，倍频晶体，四倍频四极晶体，光滤波器单元，拉曼单元，棱镜，光学膜，物镜和光纤。 本发明的方法包括以下步骤：通过如上所述的晶体发射激光束脉冲，使得产生不同波长的激光器的混合物。 光过滤器单元用于从激光混合物获得纯泵浦激光器。 最后，通过将泵浦激光器引导到拉曼元件中，通过棱镜提取从拉曼单元发射的不同阶数的受激拉曼散射激光器并通过光学膜片选择受激拉曼散射激光器的预定次数来获得拉曼激光。

公开(公告)号：US08748848B1

公开(公告)日：2014-06-10

申请号：US13933140

申请日：2013-07-02

申请人： Macau University of Science and Technology

发明人： Jianqing Li ,  Ben Xu

IPC分类号： G01N21/64 ,  G01N21/65

CPC分类号： G01N21/643 ,  H01S3/305

摘要： A method of generating Raman laser for inducing fluorescence of fluoranthene and a system thereof is disclosed. The system comprising a pulsed laser, a frequency doubling crystal, a frequency quadrupling crystal, a light filter unit, a quarter-wave plate, a Raman cell filled with deuterium gas( ), a light dispersion device and an optical diaphragm. The method of the present invention comprises the steps of emitting a laser beam pulse through the crystals as mentioned above such that a mixture of lasers is generated. The light filter unit and the quarter-wave plate are used to obtain a circular or ellipsometric polarized pump laser from the mixture of lasers. Finally, the Raman laser is obtained by directing the pump laser into a Raman cell filled with deuterium gas, extracting different orders of stimulated Raman scattering lasers emitted from the Raman cell by the light dispersion device and selecting the desired order of stimulated Raman scattering laser by the optical diaphragm.

摘要翻译： 公开了一种产生拉曼激光以诱导荧蒽荧光的方法及其系统。 该系统包括脉冲激光器，倍频晶体，频率四重晶体，光滤波器单元，四分之一波片，填充有氘气的拉曼电池（），光分散器件和光学隔膜。 本发明的方法包括以下步骤：通过如上所述的晶体发射激光束脉冲，从而产生激光的混合。 光滤波器单元和四分之一波片用于从激光混合物获得圆形或椭偏偏振泵浦激光器。 最后，通过将泵浦激光器引入到填充有氘气的拉曼元件中，通过光散射装置提取从拉曼光电子发射的不同阶数的受激拉曼散射激光，并通过以下方式选择受激拉曼散射激光器的期望顺序来获得拉曼激光： 光学膜片。

公开(公告)号：US20110249318A1

公开(公告)日：2011-10-13

申请号：US13164506

申请日：2011-06-20

申请人： Stephen W. McCahon ,  Samvel Sarkisyan ,  Paul B. Lundquist

发明人： Stephen W. McCahon ,  Samvel Sarkisyan ,  Paul B. Lundquist

IPC分类号： H01S3/30 ,  H01S3/00

CPC分类号： H01S3/235 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094015 ,  H01S3/094084 ,  H01S3/10084 ,  H01S3/302 ,  H01S3/305

摘要： A laser amplifier system is presented including a pump regenerative amplifier. The amplifier generally has a cavity defined by a pair of end cavity mirrors between which an amplified pump pulse oscillates. The amplifier also includes an interaction cell with a tunable gain medium amplifies laser pulses (e.g., Raman gain). The interaction cell may be positioned within the pump amplifier cavity and an input pulse may be injected into the cavity of the amplifier to transit through the tunable gain medium of the interaction cell. A pump pulse transfers energy via interaction with the input pulse (e.g., Raman interaction) as the pulses counter-propagate through the gain medium of the interaction cell. Amplification of output laser pulses, however, is generally achieved according to the wavelength of the pump laser pulses thereby providing a wavelength dependent, or “tunable”, means for amplifying laser pulses.

摘要翻译： 提出了一种包括泵再生放大器的激光放大器系统。 放大器通常具有由一对端腔反射镜限定的空腔，放大的泵浦脉冲在其之间振荡。 放大器还包括具有可调增益介质的相互作用单元放大激光脉冲（例如，拉曼增益）。 相互作用单元可以位于泵浦放大器空腔内，并且输入脉冲可以被注入到放大器的空腔中，以便穿过相互作用单元的可调增益介质。 当脉冲通过相互作用单元的增益介质反向传播时，泵浦脉冲通过与输入脉冲（例如，拉曼相互作用）的相互作用传递能量。 然而，输出激光脉冲的放大通常根据泵激光脉冲的波长来实现，从而提供用于放大激光脉冲的波长依赖性或“可调谐”装置。

公开(公告)号：US20090323732A1

公开(公告)日：2009-12-31

申请号：US12376249

申请日：2007-08-02

申请人： Abdel Fetah Benabid

发明人： Abdel Fetah Benabid

IPC分类号： H01S3/30

CPC分类号： H01S3/305 ,  H01S3/0057 ,  H01S3/06741 ,  H01S3/06758 ,  H01S3/094096 ,  H01S3/302

摘要： An optical wave generator comprising a first-level Raman sideband generator (RSBG). The first-level RSBG comprises a first hollow-core photonic crystal fibre HCPCF (203) arranged to be filled with a Raman active gas and a first two-pump continuous wave (CW) laser source (200) having a first pump laser beam (201) at a first frequency and a second pump laser beam (202) at a second frequency, the laser source being arranged to excite the first HCPCF to generate a Raman sideband spectrum comprising a first plurality of spectral components.

摘要翻译： 一种包括第一级拉曼边带发生器（RSBG）的光波发生器。 第一级RSBG包括布置成填充有拉曼活性气体的第一中空光子晶体光纤HCPCF（203）和具有第一泵浦激光束的第一双泵连续波（CW）激光源（200） 201）和第二频率处的第二泵浦激光束（202），所述激光源被布置成激励所述第一HCPCF以产生包括第一多个光谱分量的拉曼边带谱。

公开(公告)号：US20050213615A1

公开(公告)日：2005-09-29

申请号：US11008614

申请日：2004-12-10

申请人： Antoine Hirth ,  Marc Eichhorn

发明人： Antoine Hirth ,  Marc Eichhorn

IPC分类号： H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/102 ,  H01S3/16 ,  H01S3/23 ,  H01S3/30 ,  H01S5/40

CPC分类号： H01S3/305 ,  H01S3/06741 ,  H01S3/06754 ,  H01S3/094042 ,  H01S3/094076 ,  H01S3/094096 ,  H01S3/09415 ,  H01S3/10007 ,  H01S3/1616 ,  H01S3/1693 ,  H01S3/2383 ,  H01S3/302 ,  H01S5/4087

摘要： The invention is in the field of laser radiation generation in bands II and III, and relates to a device for generating laser radiation in the infrared having means for modifying the amplified-radiation frequency and using the Raman effect, characterized by additionally having at least one diode able to emit laser radiation in the 1.8-2.1 μm frequency range, at least one current generator able to generate current levels at an adjustable repetition rate, means for supplying said current levels to said diode, and means for amplifying the laser radiation emitted by said diode and comprised of at least one fiber doped with an ion having laser activity in the diode emission range.

摘要翻译： 本发明涉及带II和III中的激光辐射生成领域，涉及一种用于在红外中产生激光辐射的装置，其具有用于修改放大频率和使用拉曼效应的装置，其特征在于另外具有至少一个 二极管能够在1.8-2.1mum的频率范围内发射激光辐射，能够以可调重复频率产生电流电平的至少一个电流发生器，用于将所述电流电平提供给所述二极管的装置，以及用于放大由 所述二极管由至少一个掺杂有在二极管发射范围内具有激光活性的离子的光纤组成。

公开(公告)号：US20050094256A1

公开(公告)日：2005-05-05

申请号：US10766635

申请日：2004-01-28

申请人： C. Dane ,  Lloyd Hackel ,  Fritz Harris

发明人： C. Dane ,  Lloyd Hackel ,  Fritz Harris

IPC分类号： H01S3/06 ,  H01S3/081 ,  H01S3/083 ,  H01S3/10 ,  H01S3/23 ,  H01S3/30 ,  G02F1/29

CPC分类号： H01S3/10076 ,  B23K26/356 ,  H01S3/0606 ,  H01S3/08095 ,  H01S3/0813 ,  H01S3/083 ,  H01S3/2333 ,  H01S3/305 ,  H01S3/307

摘要： A laser system, such as a master oscillator/power amplifier system, comprises a gain medium and a stimulated Brillouin scattering SBS mirror system. The SBS mirror system includes an in situ filtered SBS medium that comprises a compound having a small negative non-linear index of refraction, such as a perfluoro compound. An SBS relay telescope having a telescope focal point includes a baffle at the telescope focal point which blocks off angle beams. A beam splitter is placed between the SBS mirror system and the SBS relay telescope, directing a fraction of the beam to an alternate beam path for an alignment fiducial. The SBS mirror system has a collimated SBS cell and a focused SBS cell. An adjustable attenuator is placed between the collimated SBS cell and the focused SBS cell, by which pulse width of the reflected beam can be adjusted.

摘要翻译： 诸如主振荡器/功率放大器系统的激光系统包括增益介质和受激布里渊散射SBS镜系统。 SBS镜系统包括原位过滤的SBS培养基，其包含具有小的负非线性折射率的化合物，例如全氟化合物。 具有望远镜焦点的SBS中继望远镜包括在望远镜焦点处的挡板，其阻挡角度横梁。 分束器放置在SBS镜系统和SBS中继望远镜之间，将一小部分光束引导到用于对准基准的交替光束路径。 SBS镜像系统具有准直的SBS单元和聚焦的SBS单元。 可调节的衰减器放置在准直的SBS单元和聚焦的SBS单元之间，由此可以调整反射光束的脉冲宽度。

公开(公告)号：US5504765A

公开(公告)日：1996-04-02

申请号：US353993

申请日：1994-12-06

申请人： Yasuaki Miyamoto ,  Masayoshi Hagiwara ,  Makoto Hasegawa

发明人： Yasuaki Miyamoto ,  Masayoshi Hagiwara ,  Makoto Hasegawa

IPC分类号： G02F1/35 ,  H01S3/108 ,  H01S3/30 ,  H01S3/04

CPC分类号： H01S3/305 ,  H01S3/041

摘要： A low-temperature Raman laser apparatus that avoids an increase in the pump light power, which would otherwise be needed under room temperature conditions, and eliminates the problems of instability of the equipment and complicatedness of the operation under liquid nitrogen cooling conditions and also lowers the cost, which has heretofore been high due to the consumption of liquid nitrogen, and that is capable of stably and efficiently effecting Raman conversion. The low-temperature Raman laser apparatus has a Raman cell (1) filled with a Raman conversion medium to convert the wavelength of incident pump light by the Raman conversion action of the Raman conversion medium. A heat absorbing member (2) or (3), through which a brine cooled by a brine refrigerator (4) circulates, is provided around the Raman cell (1) to cool the Raman conversion medium to a temperature in the range of from 200.degree. K. to 300.degree. K.

摘要翻译： 一种低温拉曼激光装置，其避免了在室温条件下需要的泵浦光功率的增加，并且消除了设备不稳定的问题和在液氮冷却条件下操作的复杂性，并且还降低了 成本由于液氮的消耗而先前很高，并且能够稳定且有效地实现拉曼转化。 低温拉曼激光装置具有填充有拉曼转换介质的拉曼单元（1），以通过拉曼转换介质的拉曼转换作用来转换入射泵浦光的波长。 在拉曼电池（1）周围设置有由盐水冷却器（4）冷却的盐水循环的吸热构件（2）或（3），以将拉曼转化介质冷却至200℃ DEG K.至300°K

公开(公告)号：US5375131A

公开(公告)日：1994-12-20

申请号：US37552

申请日：1993-03-24

申请人： Jean-Paul Pocholle ,  Michel Papuchon ,  Jean-Pierre Huignard ,  Claude Puech

发明人： Jean-Paul Pocholle ,  Michel Papuchon ,  Jean-Pierre Huignard ,  Claude Puech

IPC分类号： H01S3/23 ,  H01S3/30

CPC分类号： H01S3/305 ,  H01S2301/20 ,  H01S3/08063 ,  H01S3/08068

摘要： A laser includes a gas enclosure placed in an optical cavity and receiving a pump beam to generate at least one first-order and one second-order Stokes wave. One of the mirrors of the cavity is transparent to wavelengths which are higher than the first-order Stokes wave.

摘要翻译： 激光器包括放置在光学腔中并接收泵浦光束以产生至少一个一阶和一个二阶斯托克斯波的气体外壳。 腔的一个反射镜对于高于一阶斯托克斯波的波长是透明的。

公开(公告)号：US5272717A

公开(公告)日：1993-12-21

申请号：US822374

申请日：1992-01-17

申请人： Robert D. Stultz

发明人： Robert D. Stultz

IPC分类号： H01S3/30

CPC分类号： H01S3/305

摘要： A single focus backward Raman laser that is a compact, efficient apparatus for converting light at a first wavelength provided by a pump laser to light at a Raman-shifted wavelength. The laser is comprised of a gas cell, two lenses, a feedback mirror, an optical isolator, and a dichroic mirror, and the gas cell contains a Raman gas medium. The Raman gas medium may be methane, hydrogen, or deuterium, for example. The two lenses bring the pump and Raman light to a single focus in the gas cell and also recollimate the light after it exits the cell. The optical isolator is used to prevent the backward-scattered pump light from reentering the pump laser. The dichroic mirror is used to reflect out the backward-scattered Raman light, while transmitting the pump laser light. The present laser has a much improved beam divergence and is much less sensitive to optical misalignments than conventional Raman half-resonator designs. The present laser is also less complex and is more compact than a multiple focus backward Raman laser, with substantially identical Raman conversion efficiency and beam divergence. The present laser is adapted to replace the Raman half-resonator and the multiple focus backward Raman laser in high pulse repetition rate (>1 Hz), medium-energy (.ltoreq.100 mJ, 1.54 .mu.m) eyesafe laser designs.