公开(公告)号：US20170012403A1

公开(公告)日：2017-01-12

申请号：US15275697

申请日：2016-09-26

Applicant: FUJIFILM Corporation

Inventor： Dai MURAKOSHI ,  Kaku IRISAWA ,  Takuji TADA

IPC: H01S3/127 ,  A61B5/00 ,  H01S3/08 ,  H01S3/16 ,  H01S3/082 ,  H01S3/092

CPC classification number: H01S3/127 ,  A61B5/0095 ,  H01S3/0809 ,  H01S3/082 ,  H01S3/092 ,  H01S3/106 ,  H01S3/1633

Abstract: In a laser device and a photoacoustic measurement device including the laser device, the intensity of light at each wavelength made independently controllable. The laser device includes a laser medium which has oscillation wavelengths at a first wavelength and a second wavelength with higher light emission efficiency than at the first wavelength, an excitation section, a first resonator, a second resonator, a Q-value change unit, and a control section. The control section oscillates light having the first wavelength through Q switching when a first delay time has elapsed after the excitation of the laser medium has been started in a case where the oscillation wavelength is the first wavelength, and oscillates light having the second wavelength through Q switching when a second delay time has elapsed after the excitation of the laser medium has been started in a case where the oscillation wavelength is the second wavelength.

Abstract translation: 在包括激光装置的激光装置和光声测量装置中，每个波长处的光的强度独立地可控制。 激光装置包括激光介质，其具有比第一波长具有更高的发光效率的第一波长和第二波长的振荡波长，激励部，第一谐振器，第二谐振器，Q值改变单元和 控制部分。 当在振荡波长为第一波长的情况下已经开始激光介质的激发之后经过第一延迟时间时，控制部分通过Q切换振荡具有第一波长的光，并且通过Q振荡具有第二波长的光 在振荡波长为第二波长的情况下已经开始激光介质的激励之后经过第二延迟时间的切换。

公开(公告)号：US20150349484A1

公开(公告)日：2015-12-03

申请号：US14822818

申请日：2015-08-10

Applicant: LEE LASER, INC.

Inventor： DWIGHT KIMBERLIN ,  DONALD BISHOP

IPC: H01S3/127 ,  G02B27/14 ,  H01S3/16 ,  H01S3/0941 ,  H01S3/23

CPC classification number: H01S3/127 ,  G02B19/0028 ,  G02B19/0057 ,  G02B27/1006 ,  G02B27/1073 ,  G02B27/14 ,  G02B27/144 ,  G02B27/145 ,  H01S3/09415 ,  H01S3/11 ,  H01S3/1611 ,  H01S3/1643 ,  H01S3/23

Abstract: A laser beam combining and power scaling device and method. A first highly reflective mirror residing perpendicular to the first optical axis reflecting radiation emitted from the first laser head. A first Q-switch in alignment with the first optical axis interposed between the first highly reflective mirror and the first laser head. A second highly reflective mirror residing perpendicular to the second optical axis reflecting radiation emitted from the second laser head. The second Q-switch in alignment with the second optical axis is interposed between the second highly reflective mirror and the first laser head. A third optical axis is coincident with the first optical axis. A third highly reflective mirror residing perpendicular to the third optical axis in alignment therewith. The third optical axis may include a third diode pumped laser head and Q-switch. A beam splitter resides at the intersection of the axes.

Abstract translation: 激光束组合和功率缩放装置及方法。 第一高反射镜，其垂直于第一光轴垂直，反射从第一激光头发射的辐射。 第一Q开关，其与插入在第一高反射镜和第一激光头之间的第一光轴对准。 第二高反射镜，垂直于第二光轴，反射从第二激光头发出的辐射。 与第二光轴对准的第二Q开关设置在第二高反射镜和第一激光头之间。 第三光轴与第一光轴重合。 第三高反射镜，其垂直于与其对准的第三光轴。 第三光轴可以包括第三二极管泵浦激光头和Q开关。 分束器位于轴的相交处。

公开(公告)号：US08693511B2

公开(公告)日：2014-04-08

申请号：US13932180

申请日：2013-07-01

Applicant: Lee Laser, Inc.

Inventor： Dwight Kimberlin ,  Donald Bishop

IPC: H01S3/082 ,  H01S3/11

CPC classification number: H01S3/127 ,  G02B19/0028 ,  G02B19/0057 ,  G02B27/1006 ,  G02B27/1073 ,  G02B27/14 ,  G02B27/144 ,  G02B27/145 ,  H01S3/09415 ,  H01S3/11 ,  H01S3/1611 ,  H01S3/1643 ,  H01S3/23

Abstract: A laser beam combining and power scaling device and method. A first highly reflective mirror residing perpendicular to the first optical axis reflecting radiation emitted from the first laser head. A first Q-switch in alignment with the first optical axis interposed between the first highly reflective mirror and the first laser head. A second highly reflective mirror residing perpendicular to the second optical axis reflecting radiation emitted from the second laser head. The second Q-switch in alignment with the second optical axis is interposed between the second highly reflective mirror and the first laser head. A third optical axis is coincident with the first optical axis. A third highly reflective mirror residing perpendicular to the third optical axis in alignment therewith. The third optical axis may include a third diode pumped laser head and Q-switch. A beam splitter resides at the intersection of the axes.

Abstract translation: 激光束组合和功率缩放装置及方法。 第一高反射镜，其垂直于第一光轴垂直，反射从第一激光头发射的辐射。 第一Q开关，其与插入在第一高反射镜和第一激光头之间的第一光轴对准。 第二高反射镜，垂直于第二光轴，反射从第二激光头发出的辐射。 与第二光轴对准的第二Q开关置于第二高反射镜和第一激光头之间。 第三光轴与第一光轴重合。 第三高反射镜，其垂直于与其对准的第三光轴。 第三光轴可以包括第三二极管泵浦激光头和Q开关。 分束器位于轴的相交处。

公开(公告)号：US08559471B2

公开(公告)日：2013-10-15

申请号：US12951320

申请日：2010-11-22

Applicant: Guilin Mao

Inventor： Guilin Mao

IPC: H01S3/10

CPC classification number: H01S3/094053 ,  H01S3/0401 ,  H01S3/0407 ,  H01S3/0812 ,  H01S3/0816 ,  H01S3/094061 ,  H01S3/09415 ,  H01S3/109 ,  H01S3/127

Abstract: A high-power diode end-pumped solid-state UV laser comprises high-power fiber-coupled end pumping laser diodes, a specially designed fundamental laser cavity and multiple high-power high-efficiency harmonic generations. Nonuniform fundamental laser cavity has to be used, i.e. the beam size of the fundamental laser cannot be uniform in the fundamental cavity. Thermal transfer inside the laser crystal and harmonic crystal has to be specially and carefully treated, and special crystal mounts were designed to optimize the thermal contact and maximize the heat transfer. In addition, harmonic crystal mounts were specially designed to minimize the loss and protect the hydroscopic crystals.

Abstract translation: 大功率二极管端泵浦固态紫外激光器包括大功率光纤耦合端泵浦激光二极管，专门设计的基本激光腔和多个高功率高效谐波发生器。 必须使用不均匀的基本激光腔，即基本激光器的光束尺寸在基本腔中不能均匀。 必须对激光晶体和谐波晶体内的热传递进行特殊和细致的处理，并设计特殊的晶体安装座以优化热接触并最大限度地提高热传递。 此外，谐波晶体安装座是专门设计的，以尽量减少损耗并保护吸水晶体。

公开(公告)号：US08509272B2

公开(公告)日：2013-08-13

申请号：US12481784

申请日：2009-06-10

Applicant: Dwight Kimberlin ,  Donald Bishop

Inventor： Dwight Kimberlin ,  Donald Bishop

IPC: H01S3/082 ,  H01S3/11

CPC classification number: H01S3/127 ,  G02B19/0028 ,  G02B19/0057 ,  G02B27/1006 ,  G02B27/1073 ,  G02B27/14 ,  G02B27/144 ,  G02B27/145 ,  H01S3/09415 ,  H01S3/11 ,  H01S3/1611 ,  H01S3/1643 ,  H01S3/23

Abstract: A laser beam combining and power scaling device and method. A first highly reflective mirror residing perpendicular to the first optical axis reflecting radiation emitted from the first laser head. A first Q-switch in alignment with the first optical axis interposed between the first highly reflective mirror and the first laser head. A second highly reflective mirror residing perpendicular to the second optical axis reflecting radiation emitted from the second laser head. The second Q-switch in alignment with the second optical axis is interposed between the second highly reflective mirror and the first laser head. A third optical axis is coincident with the first optical axis. A third highly reflective mirror residing perpendicular to the third optical axis in alignment therewith. The third optical axis may include a third diode pumped laser head and Q-switch. A beam splitter resides at the intersection of the axes.

Abstract translation: 激光束组合和功率缩放装置及方法。 第一高反射镜，其垂直于第一光轴垂直，反射从第一激光头发射的辐射。 第一Q开关，其与插入在第一高反射镜和第一激光头之间的第一光轴对准。 第二高反射镜，垂直于第二光轴，反射从第二激光头发出的辐射。 与第二光轴对准的第二Q开关设置在第二高反射镜和第一激光头之间。 第三光轴与第一光轴重合。 第三高反射镜，其垂直于与其对准的第三光轴。 第三光轴可以包括第三二极管泵浦激光头和Q开关。 分束器位于轴的相交处。

公开(公告)号：US20110122896A1

公开(公告)日：2011-05-26

申请号：US12951320

申请日：2010-11-22

Applicant: Guilin Mao

Inventor： Guilin Mao

IPC: H01S3/115

CPC classification number: H01S3/094053 ,  H01S3/0401 ,  H01S3/0407 ,  H01S3/0812 ,  H01S3/0816 ,  H01S3/094061 ,  H01S3/09415 ,  H01S3/109 ,  H01S3/127

Abstract: A high-power diode end-pumped solid-state UV laser comprises high-power fiber-coupled end pumping laser diodes, a specially designed fundamental laser cavity and multiple high-power high-efficiency harmonic generations. Nonuniform fundamental laser cavity has to be used, i.e. the beam size of the fundamental laser cannot be uniform in the fundamental cavity. Thermal transfer inside the laser crystal and harmonic crystal has to be specially and carefully treated, and special crystal mounts were designed to optimize the thermal contact and maximize the heat transfer. In addition, harmonic crystal mounts were specially designed to minimize the loss and protect the hydroscopic crystals.

Abstract translation: 大功率二极管端泵浦固态紫外激光器包括大功率光纤耦合端泵浦激光二极管，专门设计的基本激光腔和多个高功率高效谐波发生器。 必须使用不均匀的基本激光腔，即基本激光器的光束尺寸在基本腔中不能均匀。 必须对激光晶体和谐波晶体内的热传递进行特殊和细致的处理，并设计特殊的晶体安装座以优化热接触并最大限度地提高热传递。 此外，谐波晶体安装座是专门设计的，以尽量减少损耗并保护吸水晶体。

公开(公告)号：US07224707B2

公开(公告)日：2007-05-29

申请号：US10792782

申请日：2004-03-05

Applicant: Denis J. Gendron

Inventor： Denis J. Gendron

IPC: H01S3/11 ,  H01S3/16

CPC classification number: H01S3/08031 ,  H01S3/1061 ,  H01S3/113 ,  H01S3/115 ,  H01S3/117 ,  H01S3/127 ,  H01S2301/02

Abstract: A novel Q-switch device enables significant quality and value improvement for a Q-switched laser system by achieving a significant reduction of mode-beating noise during the pulsed output. The origin of mode-beating noise in a Q-switched laser is a result of high gain availability and amplification of competing standing-waves in formation, whose optical frequency is a product of natural selection via spatial hole burning in the gain medium. The novel Q-switch device employs an active, electro-optics or acousto-optics, Q-switch in combination with a saturable absorber device, to provide an optimized soft opening of the optical path and a controlled timing of a Q-switched laser. This novel combination offers larger modulation loss than otherwise possible with the active modulator alone, and it allows for higher gain build-up and energy extraction efficiency. Specifically, it will enable a low-voltage modulator ( 10) and Q-switched operation at high repetition rate (>10 kHz). The combination is devised to slow down the signal build-up and to sweep the fundamental longitudinal mode frequency at least within the free spectral range of the resonator, such that it varies adiabatically during the Q-switched pulse formation. A laser geometry amenable to high gain and high power is proposed for use in conjunction with the proposed novel Q-switch device. The invention will enable the deployment of cost-effective Q-switched lasers operating in both single-longitudinal and single-transverse (TEM00) mode.

Abstract translation: 一种新颖的Q开关器件通过在脉冲输出期间实现显着降低振铃噪声，可以为Q开关激光器系统提供显着的质量和价值改进。 Q开关激光器中的抖动噪声的起源是由于增益可用性和形成中的竞争性驻波的放大而导致的，其光频率是通过增益介质中的空间孔燃烧进行自然选择的乘积。 新颖的Q开关器件采用有源，电光或声光Q开关与可饱和吸收器件组合，以提供光路的优化软开路和Q开关激光器的受控时序。 这种新颖的组合提供比单独的有源调制器更大的调制损耗，并且其允许更高的增益积聚和能量提取效率。 具体来说，它将使低电压调制器（<100 V）获得高增益（小信号增益> 10）和高重复频率（> 10 kHz）的Q开关操作。 该组合被设计为减缓信号积聚并且至少在谐振器的自由光谱范围内扫描基本纵向模式频率，使得其在Q开关脉冲形成期间以绝热方式变化。 提出了适用于高增益和高功率的激光几何结构，与所提出的新型Q开关器件结合使用。 本发明将能够部署以单纵向和单横向（TEM <00> 00）模式工作的成本有效的Q开关激光器。

公开(公告)号：US20060114947A1

公开(公告)日：2006-06-01

申请号：US11288229

申请日：2005-11-29

Applicant: Hiroyuki Morita

Inventor： Hiroyuki Morita

IPC: H01S3/10

CPC classification number: H01S3/109 ,  H01S3/005 ,  H01S3/07 ,  H01S3/08072 ,  H01S3/0815 ,  H01S3/127 ,  H01S3/1611 ,  H01S3/1643

Abstract: Two laser media are disposed at equal intervals between a first flat mirror, which is a resonator mirror comprising a resonator, and a second flat mirror for separating laser light that transmits second-harmonic laser light and reflects fundamental laser light toward a laser light incident plane; and a dielectric multilayer film is formed on the second flat mirror for separating the laser light. A third flat mirror, which is a resonator mirror, is disposed so as to face a direction 90° to the incident direction of the fundamental laser light in the second flat mirror. A first lens, a nonlinear optical crystal for converting fundamental laser light into a second-harmonic laser light, and a second lens are disposed in sequence in a single row at intervals that are equal to the focal distances f of the first and second lenses between the second and third flat mirrors. Space for accommodating a nonlinear optical crystal and a mirror for separating second-harmonic laser light can thereby be secured while maintaining stabilized resonance conditions, and the output of the solid-state laser generator can be increased.

Abstract translation: 在作为包括谐振器的谐振器镜的第一平面镜和用于分离透射二次谐波激光的激光并将基本激光反射到激光入射面的第二平面镜之间以相等的间隔设置两个激光介质 ; 并且在第二平面镜上形成用于分离激光的电介质多层膜。 作为谐振镜的第三平面镜被配置成与第二平面镜中的基本激光的入射方向成90°的方向。 将第一透镜，用于将基本激光转换为二次谐波激光的非线性光学晶体和第二透镜依次以与第一和第二透镜的焦距f相等的间隔依次布置在 第二和第三平面镜。 从而可以在保持稳定的共振条件的同时确保用于容纳非线性光学晶体的空间和用于分离二次谐波激光的反射镜，并且可以增加固态激光发生器的输出。

公开(公告)号：US20030086447A1

公开(公告)日：2003-05-08

申请号：US09368665

申请日：1999-08-05

Inventor： EDDIE H. YOUNG ,  ROBERT V. BELFATTO ,  CARLOS M. CARBONELL

IPC: H01S003/11 ,  H01S003/117 ,  H01S003/10

CPC classification number: H01S3/117 ,  H01S3/04 ,  H01S3/127

Abstract: A Q-switch modulator for a high power laser having a randomly polarized output beam and large divergence angle employs a cascaded arrangement of longitudinal mode acousto-optic modulators, each of which has a Raman Nath or near Raman Nath interaction length. The modulators are optically cascaded such that the distance the randomly polarized laser beam travels through the modulators is effectively confined to the sum of the non coherent interaction lengths thereof. Due to the substantial power level of the laser output, there is heating of the bulk material, which usually results in a shift in the Bragg angle. This has minimal if any effect on the shorter interaction length of the Q-switch modulator of the invention. Also, heating of the bulk material is countered by the incorporation of cooling fluid channels in a heat sink support block coupled in thermal communication with the bulk material. The heat sink support structure is configured to be effectively mechanically floating with respect to a support housing for the Q-switch.

Abstract translation: 具有随机偏振输出光束和大发散角的大功率激光器的Q开关调制器采用纵向模式声光调制器的级联布置，其中每个具有拉曼Nath或接近拉曼Nath相互作用长度。 调制器被光学级联，使得随机偏振的激光束穿过调制器的距离被有效地限制在其非相干相互作用长度的和之间。 由于激光输出的实质功率水平，散装材料的加热，这通常导致布拉格角的偏移。 如果对本发明的Q开关调制器的较短的相互作用长度有任何影响，这是最小的。 此外，通过将冷却流体通道并入与散装材料热连通的散热器支撑块中来抵消散装材料的加热。 散热器支撑结构被配置为相对于用于Q开关的支撑壳体有效地机械地浮动。

公开(公告)号：US5848080A

公开(公告)日：1998-12-08

申请号：US854814

申请日：1997-05-12

Applicant: Jonathan S. Dahm

Inventor： Jonathan S. Dahm

IPC: B23K26/06 ,  B23K26/16 ,  H01L21/304 ,  H01S3/11 ,  H01S3/115 ,  H01S3/127 ,  H01S3/10 ,  B23K26/00

CPC classification number: H01S3/115 ,  B23K26/0622 ,  B23K26/16 ,  H01L21/304 ,  H01S3/08054 ,  H01S3/1127 ,  H01S3/127

Abstract: A laser with high average power, high repetition rate, ultra-short pulsewidth, and excellent beam quality is described. This is achieved by the use of high power diodes used to uniformly pump an improved Nd:YAlO.sub.3 crystal, resulting in a beam with excellent quality. In addition, a beta-barium borate (BBO) crystal, used in conjunction with drift step recovery diodes (DSRDs), forms a high speed optical switch which can be used to cavity dump the laser.

Abstract translation: 描述了具有高平均功率，高重复率，超短脉冲宽度和优良光束质量的激光器。 这通过使用用于均匀泵浦改进的Nd：YAlO 3晶体的高​​功率二极管来实现，从而导致具有优良品质的光束。 此外，与漂移步骤恢复二极管（DSRD）结合使用的β-硼酸钡（BBO）晶体形成高速光学开关，可用于空腔转储激光器。