公开(公告)号：US07885308B2

公开(公告)日：2011-02-08

申请号：US12416908

申请日：2009-04-01

申请人： W. Shef Robotham, Jr. ,  Joel Fontanella

发明人： W. Shef Robotham, Jr. ,  Joel Fontanella

IPC分类号： H01S3/22 ,  H01S3/13

CPC分类号： H01S3/0975 ,  H01S3/09702 ,  H01S3/1305 ,  H01S3/2232

摘要： A gas discharge laser includes a laser housing including a laser gas and an electrode-assembly for lighting a discharge in the laser gas. The electrode assembly has a first resonant frequency when the discharge is not lit and a second resonant frequency when the discharge is lit. RF power delivering circuitry of the laser includes an arrangement for determining and recording the two resonant frequencies. RF power is applied to the electrodes at the first recorded resonant frequency to facilitate lighting of the discharge, and thereafter at the second resonant frequency to light and sustain the discharge.

摘要翻译： 气体放电激光器包括包括激光气体的激光器壳体和用于点燃激光气体中的放电的电极组件。 当放电不亮时，电极组件具有第一谐振频率，并且当放电点亮时具有第二谐振频率。 激光器的RF功率输送电路包括用于确定和记录两个谐振频率的装置。 以第一记录谐振频率向电极施加RF功率以便于放电的点亮，此后在第二谐振频率点亮并维持放电。

公开(公告)号：US20090296764A1

公开(公告)日：2009-12-03

申请号：US12416908

申请日：2009-04-01

申请人： W. Shef ROBOTHAM, JR. ,  Joel FONTANELLA

发明人： W. Shef ROBOTHAM, JR. ,  Joel FONTANELLA

IPC分类号： H01S3/00 ,  H01S3/22

CPC分类号： H01S3/0975 ,  H01S3/09702 ,  H01S3/1305 ,  H01S3/2232

摘要： A gas discharge laser includes a laser housing including a laser gas and an electrode-assembly for lighting a discharge in the laser gas. The electrode assembly has a first resonant frequency when the discharge is not lit and a second resonant frequency when the discharge is lit. RF power delivering circuitry of the laser includes an arrangement for determining and recording the two resonant frequencies. RF power is applied to the electrodes at the first recorded resonant frequency to facilitate lighting of the discharge, and thereafter at the second resonant frequency to light and sustain the discharge.

摘要翻译： 气体放电激光器包括包括激光气体的激光器壳体和用于点燃激光气体中的放电的电极组件。 当放电不亮时，电极组件具有第一谐振频率，并且当放电点亮时具有第二谐振频率。 激光器的RF功率输送电路包括用于确定和记录两个谐振频率的装置。 以第一记录谐振频率向电极施加RF功率以便于放电的点亮，此后在第二谐振频率点亮并维持放电。

公开(公告)号：US07508850B2

公开(公告)日：2009-03-24

申请号：US10932818

申请日：2004-09-02

申请人： Leon A. Newman ,  John Kennedy ,  Joel Fontanella ,  Phillip J. Gardner

发明人： Leon A. Newman ,  John Kennedy ,  Joel Fontanella ,  Phillip J. Gardner

IPC分类号： H01S3/10

CPC分类号： B23K26/0622 ,  B23K26/382 ,  B23K2101/42 ,  B23K2103/50 ,  G02F1/0327 ,  G02F2203/54 ,  H01S3/0057

摘要： The quality of pulses output from laser systems such as super-pulsed CO2 slab lasers can be improved using half-wavelength electro-optic modulators (EOMs), in combination with thin film polarizers (TFPs). A voltage applied across a CdTe crystal of the EOM rotates the polarization of a pulse passing through the EOM by 90°. The polarization determines whether the pulse passes through, or is redirected by, the TFP. The voltage applied to the crystal can be pulsed to prevent a drop in charge, which could allow radiation to leak to the application. A totem pole switch used to apply voltage to the EOM can receive a pulsed voltage for improved performance. Directing by the EOM allows pulses to be clipped at the front/back end(s), split into portions, and/or directed to separate scanners. Directing pulses or pulse portions to different scanners can increase the output of systems such as hole drilling systems.

摘要翻译： 使用半波长电光调制器（EOM）与薄膜偏振器（TFP）组合，可以提高激光系统（如超脉冲CO2平板激光器）输出脉冲的质量。 施加在EOM的CdTe晶体两端的电压将通过EOM的脉冲的极化旋转90°。 极化决定脉冲是否通过TFP或被TFP重定向。 施加到晶体的电压可以被脉冲以防止电荷下降，这可能使辐射泄漏到应用中。 用于向EOM施加电压的图腾柱开关可以接收脉冲电压以提高性能。 通过EOM引导允许在前/后端剪切脉冲，分割成部分，和/或指向分离的扫描仪。 将脉冲或脉冲部分引导到不同的扫描仪可以增加系统的输出，例如钻孔系统。

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：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。