公开(公告)号：US07113529B2

公开(公告)日：2006-09-26

申请号：US10389158

申请日：2003-03-14

申请人： Vernon Seguin ,  Leon Newman ,  R. Russel Austin ,  Anthony DeMaria

发明人： Vernon Seguin ,  Leon Newman ,  R. Russel Austin ,  Anthony DeMaria

IPC分类号： G02H6/26

CPC分类号： H01S3/2232 ,  H01S3/0346 ,  H01S3/09702 ,  H01S3/106 ,  H01S3/115

摘要： An electro-optical switch includes an optical assembly arranged to transmit laser-radiation. The optical assembly comprises an active optical crystal. On one of two opposite surfaces of the crystal is an optical window formed from a material having a refractive index lower than the material of the crystal. Heat deposited, as a result of transmission of the laser-radiation, at the surface of the crystal in contact with the widow is transferred to the window, thereby reducing the potential for optical damage to the crystal surface. The window is sufficiently thick that it has an odd integer multiple of quarter-wavelengths optical thickness at a wavelength about equal to a wavelength of the laser-radiation, thereby behaving as an antireflection device for the crystal at that wavelength. In one embodiment of the optical assembly, the active optical crystal is a cadmium telluride crystal and the window is formed from cesium bromide.

摘要翻译： 电光开关包括布置成透射激光辐射的光学组件。 光学组件包括有源光学晶体。 在晶体的两个相对表面中的一个表面上是由折射率低于晶体材料的材料形成的光学窗口。 作为透射激光辐射的结果，在与寡妇接触的晶体的表面上进行热沉积被转移到窗口，由此降低了对晶体表面的光学损伤的可能性。 窗口足够厚，使得其具有在等于激光辐射波长的波长处的四分之一波长光学厚度的奇整数倍，从而表现为在该波长处的晶体的抗反射装置。 在光学组件的一个实施例中，有源光学晶体是碲化镉晶体，窗口由溴化铯形成。

公开(公告)号：US07039079B2

公开(公告)日：2006-05-02

申请号：US10389081

申请日：2003-03-14

申请人： Vernon Seguin ,  Leon Newman ,  John Kennedy ,  Joel Fontanella ,  Anthony DeMaria

发明人： Vernon Seguin ,  Leon Newman ,  John Kennedy ,  Joel Fontanella ,  Anthony DeMaria

IPC分类号： H01S3/10

CPC分类号： H01S3/2232 ,  H01S3/0315 ,  H01S3/09702 ,  H01S3/1075 ,  H01S3/1103 ,  H01S3/115

摘要： A laser includes a gain medium located in a laser resonator. The gain medium generates plane polarized radiation plane polarized in a first polarization orientation. An electro-optical switch is located in the resonator. When the switch is activated the polarization plane of the laser radiation is rotated to a second orientation after making a forward and a reverse pass through the optical switch. When the switch is deactivated, the polarization orientation of the forward and reverse transmitted laser radiation remains about the same. A polarization selective device is located in the resonator between the electro-optical switch and the gain medium. The polarization selective device is arranged to permit circulation in the resonator of laser radiation in the first polarization orientation, and to restrict circulation of laser radiation in the second polarization orientation. The Gain medium is energized and the switch activated to allow energy to build in the gain medium. The switch is then deactivated to allow laser radiation to circulate in the resonator and deliver a laser pulse. A method of activating the switch by a sequence of DC pulses is disclosed.

摘要翻译： 激光器包括位于激光谐振器中的增益介质。 增益介质产生以第一极化取向偏振的平面偏振辐射平面。 电光开关位于谐振器中。 当开关被激活时，激光辐射的偏振平面在通过光学开关的正向和反向通过之后被旋转到第二取向。 当开关被禁用时，正向和反向传输的激光辐射的偏振方向保持大致相同。 偏振选择装置位于电光开关和增益介质之间的谐振器中。 偏振选择装置被布置成允许在第一极化取向中的激光辐射的谐振器中循环，并且限制第二偏振取向中的激光辐射的循环。 增益介质通电，并且开关被激活以允许在增益介质中建立能量。 然后禁用开关以允许激光辐射在谐振器中循环并传递激光脉冲。 公开了通过一系列DC脉冲来激活开关的方法。

公开(公告)号：US20050157762A1

公开(公告)日：2005-07-21

申请号：US10760687

申请日：2004-01-20

申请人： Anthony DeMaria ,  Leon Newman ,  Vernon Seguin

发明人： Anthony DeMaria ,  Leon Newman ,  Vernon Seguin

IPC分类号： B23K26/06 ,  B23K26/067 ,  B23K26/073 ,  G02B27/09 ,  H01S3/00 ,  H01S3/03 ,  H01S3/08 ,  H01S3/105 ,  H01S3/223 ,  H01S3/23 ,  H01S3/10

CPC分类号： G02B27/0927 ,  B23K26/0604 ,  B23K26/067 ,  B23K26/0732 ,  B23K26/0736 ,  G02B27/0977 ,  H01S3/0315 ,  H01S3/08031 ,  H01S3/10092 ,  H01S3/105 ,  H01S3/2232 ,  H01S3/2383

摘要： Multiple laser beams, each having a shape such as a Gaussian profile, can be incoherently combined to obtain a shaped, flat top laser beam. The combined laser beams can provide power levels necessary for material processing applications such as annealing, drilling, and cutting, while minimizing the amount of unused power. The lasers can be positioned in an array in order to shape the flat top beam, and can be staggered in position where necessary to give each output beam an equal beam path length. The relative frequencies and/or powers of the lasers can be adjusted to control the flatness and stability of the incoherently combined beam.

摘要翻译： 每个具有诸如高斯分布的形状的多个激光束可以被不相干地组合以获得成形的平顶激光束。 组合的激光束可以提供材料处理应用所需的功率等级，例如退火，钻孔和切割，同时最小化未使用功率的量。 激光器可以被定位在阵列中以便形成平坦的顶部波束，并且可以在必要时交错地位以给出每个输出光束相等的光束路径长度。 可以调节激光器的相对频率和/或功率以控制非相干组合光束的平坦度和稳定性。

公开(公告)号：US20050175054A1

公开(公告)日：2005-08-11

申请号：US10869964

申请日：2004-06-17

申请人： Christian Shackleton ,  Phillip Gardner ,  Anthony DeMaria ,  Vernon Seguin ,  John Kennedy

发明人： Christian Shackleton ,  Phillip Gardner ,  Anthony DeMaria ,  Vernon Seguin ,  John Kennedy

IPC分类号： H01S3/03 ,  H01S3/038 ,  H01S3/04 ,  H01S3/041 ,  H01S3/0975 ,  H01S3/22 ,  H01S3/223

CPC分类号： H01S3/2232 ,  H01S3/0315 ,  H01S3/038 ,  H01S3/0385 ,  H01S3/0407 ,  H01S3/041 ,  H01S3/0975

摘要： An slab CO2 laser includes spaced-apart elongated slab electrodes. A lasing gas fills a discharge gap between the electrodes. An RF power supply is connected across the electrodes and sustains an electrical discharge in the lasing gas in the discharge gap. Either one or two ceramic inserts occupy a portion of width of the electrodes and in contact with the electrodes. A discharge gap is formed between the portions of the width of the electrodes not occupied by the insert or inserts. Provision of the ceramic insert or inserts increases the resistance-capacitance (RC) time constant of the electrode impedance by increasing the capacitive component of the time constant. This hinders the formation of arcs in the discharge, which, in turn enables the inventive laser to operate with higher excitation power or higher lasing-gas pressure than would be possible without the dielectric insert. The ceramic insert also decreases the difference in impedance of the electrodes with and without a discharge. This leads to a better-behaved discharge, and a discharge that is easier to light.

摘要翻译： 平板CO2激光器包括间隔开的细长板状电极。 激光气体填充电极之间的放电间隙。 RF电源跨越电极连接，并且在放电间隙中的激光气体中保持放电。 一个或两个陶瓷插入件占据电极宽度的一部分并与电极接触。 在未被插入物或插入物占据的电极的宽度部分之间形成放电间隙。 提供陶瓷插件或插件通过增加时间常数的电容分量来增加电极阻抗的电阻 - 电容（RC）时间常数。 这阻碍了放电中的电弧的形成，这又使得本发明的激光器能够在没有电介质插入件的情况下以更高的激发功率或更高的激光气体压力运行。 陶瓷插入件还减少了具有和没有放电的电极的阻抗差异。 这导致更好的放电，并且更容易点亮的放电。

公开(公告)号：US20060029116A1

公开(公告)日：2006-02-09

申请号：US10912507

申请日：2004-08-05

申请人： Christian Shackleton ,  Phillip Gardner ,  Anthony DeMaria ,  Vernon Seguin ,  John Kennedy

发明人： Christian Shackleton ,  Phillip Gardner ,  Anthony DeMaria ,  Vernon Seguin ,  John Kennedy

IPC分类号： H01S3/22

CPC分类号： H01S3/0315 ,  H01S3/0388 ,  H01S3/0407 ,  H01S3/041 ,  H01S3/09705 ,  H01S3/0971 ,  H01S3/2232

摘要： A slab laser includes two elongated electrodes arranged spaced apart and face-to-face. Either one or two slabs of a solid dielectric material extend along the length of the electrodes between the electrodes. A discharge gap is formed either between one of the electrodes and one dielectric slab, or between two dielectric slabs. The discharge gap is filled with lasing gas. A pair of mirrors is configured and arranged to define a laser resonator extending through the gap. An RF potential is applied across the electrodes creating a gas discharge in the gap, and causing laser radiation to circulate in the resonator. Inserting dielectric material between the electrodes increases the resistance-capacitance (RC) time constant of the discharge structure compared with the RC time constant in the absence of dielectric material. This hinders the formation of arcs in the discharge, which enables the laser to operate with higher excitation power, higher lasing gas pressure, and higher output power than would be possible without the dielectric inserts.

摘要翻译： 平板激光器包括间隔开并且面对面布置的两个细长电极。 一个或两个固体电介质材料板沿电极的电极长度延伸。 在一个电极和一个电介质板之间或两个电介质板之间形成放电间隙。 放电间隙充满激光气体。 一对反射镜被配置和布置成限定延伸穿过间隙的激光谐振器。 在电极上施加RF电位，在间隙中产生气体放电，并使激光辐射在谐振器中循环。 在不存在电介质材料的情况下，在电极间插入电介质材料会增加放电结构的电阻 - 电容（RC）时间常数。 这阻碍了放电中的电弧形成，这使得激光器能够在没有电介质插入件的情况下以更高的激发功率，更高的激光气体压力和更高的输出功率运行。

公开(公告)号：US06999490B2

公开(公告)日：2006-02-14

申请号：US10624411

申请日：2003-07-21

申请人： John Kennedy ,  Lanny Laughman ,  Anthony DeMaria ,  Ronald Straayer

发明人： John Kennedy ,  Lanny Laughman ,  Anthony DeMaria ,  Ronald Straayer

IPC分类号： H01S3/223 ,  H01S3/03 ,  H01S3/097

CPC分类号： H01S3/0315 ,  H01S3/076 ,  H01S3/2232

摘要： A waveguide gas laser includes an enclosure filled with a lasing gas. A ceramic block is provided with one or more waveguide channels. At least one of the waveguide channels includes an open region which is in fluid communication with a waveguide channel. Lasing gas in the enclosure fills the waveguide channels and the lateral extension. An electric field is applied across the lateral extension of the waveguide channel while simultaneously applying a smaller electric field across the waveguide channel. The electric field across the lateral extension ignites a discharge in the lateral extension that spreads into the lasing gas in the waveguide channel. The electric field across the waveguide channel is sufficient to sustain the discharge in the lasing in the waveguide channel.

摘要翻译： 波导气体激光器包括填充有激光气体的外壳。 陶瓷块设置有一个或多个波导通道。 至少一个波导通道包括与波导通道流体连通的开放区域。 外壳中的激光气体填充波导通道和横向延伸。 在波导通道的横向延伸部分施加电场，同时在波导通道上施加较小的电场。 跨越横向延伸的电场点燃在横向延伸中的放电，其扩散到波导通道中的激光气体中。 穿过波导通道的电场足以维持波导通道中的激光的放电。

公开(公告)号：US20070091973A1

公开(公告)日：2007-04-26

申请号：US11542466

申请日：2006-10-03

申请人： Robert Henschke ,  Joel Fontanella ,  Anthony DeMaria

发明人： Robert Henschke ,  Joel Fontanella ,  Anthony DeMaria

IPC分类号： H01S3/08

CPC分类号： H01S3/10092 ,  H01S3/005 ,  H01S3/10015 ,  H01S3/115 ,  H01S3/134 ,  H01S3/1398 ,  H01S3/2232

摘要： A CO2 laser reference oscillator (RO) can provide injection seeding to a Q-switched (QS) or Q-switched cavity dumped (QSCD) CO2 laser, where the output frequency of the RO laser is locked to the peak of the laser line by the use of appropriate electronics to dither one of the resonator mirrors of the reference oscillator. This injected radiation seeds the radiation building up within the Q-switched laser cavity, such that the oscillating frequency favors the wavelength of the injected radiation. An electronic feedback control circuit can be used to lock an axial mode of the Q-switched laser to line center. The change in build-up time of the pulses within the QS laser can be used to maintain cavity length at a value that enables oscillating at the peak of the same laser line that is injected into QS laser.

摘要翻译： CO 2激光参考振荡器（RO）可以向Q开关（QS）或Q开关腔倾倒（QSCD）CO 2激光器提供注入接种，其中 RO激光器的输出频率通过使用适当的电子装置来锁定到激光线的峰值，以抖动基准振荡器的谐振镜之一。 这种注入的辐射使辐射建立在Q开关激光腔内，使得振荡频率有利于注入的辐射的波长。 可以使用电子反馈控制电路将Q开关激光器的轴向模式锁定到线路中心。 可以使用QS激光器内的脉冲的积聚时间的变化来将腔体长度保持在能够在注入到QS激光器中的相同激光线的峰值处振荡的值。

公开(公告)号：US20050018736A1

公开(公告)日：2005-01-27

申请号：US10624411

申请日：2003-07-21

申请人： John Kennedy ,  Lanny Laughman ,  Anthony DeMaria ,  Ronald Straayer

发明人： John Kennedy ,  Lanny Laughman ,  Anthony DeMaria ,  Ronald Straayer

IPC分类号： H01S3/03 ,  H01S3/22 ,  H01S3/223

CPC分类号： H01S3/0315 ,  H01S3/076 ,  H01S3/2232

摘要： A waveguide gas laser includes an enclosure filled with a lasing gas. A ceramic block is provided with one or more waveguide channels. At least one of the waveguide channels includes an open region which is in fluid communication with a waveguide channel. Lasing gas in the enclosure fills the waveguide channels and the lateral extension. An electric field is applied across the lateral extension of the waveguide channel while simultaneously applying a smaller electric field across the waveguide channel. The electric field across the lateral extension ignites a discharge in the lateral extension that spreads into the lasing gas in the waveguide channel. The electric field across the waveguide channel is sufficient to sustain the discharge in the lasing in the waveguide channel.

摘要翻译： 波导气体激光器包括填充有激光气体的外壳。 陶瓷块设置有一个或多个波导通道。 至少一个波导通道包括与波导通道流体连通的开放区域。 外壳中的激光气体填充波导通道和横向延伸。 在波导通道的横向延伸部分施加电场，同时在波导通道上施加较小的电场。 跨越横向延伸的电场点燃在横向延伸中的放电，其扩散到波导通道中的激光气体中。 穿过波导通道的电场足以维持波导通道中的激光的放电。