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1. 发明申请

US20050157381A1 Low-gain regenerative amplifier system 有权
标题翻译：低增益再生放大器系统
公开(公告)号：US20050157381A1
公开(公告)日：2005-07-21
申请号：US10762216
申请日：2004-01-20
申请人： James Kafka , Jianping Zhou , Kevin Holsinger
发明人： James Kafka , Jianping Zhou , Kevin Holsinger
IPC分类号： H01S3/00 , H01S3/16 , H01S3/23
CPC分类号： H01S3/235 , H01S3/0064 , H01S3/0085 , H01S3/107 , H01S3/1611 , H01S3/1618
摘要： A regenerative amplifier system that is optimized for low-gain gain media is provided. The system is configured to include a minimum number of intra-cavity elements while still eliminating the leakage of the seed pulses from the output beam. In addition, the contrast ratio of the amplified pulses is increased even considering the long build-up time that is required in low-gain regenerative amplifiers. This is accomplished using a single Pockels cell between the oscillator and amplifier to select a single seed pulse for the cavity, instead of using a Faraday isolator. This directs the unwanted seed pulses in a separate direction from the output pulse. When the amplified pulse exits the cavity, it is directed in a direction away from the oscillator by the same Pockels cell. Only one additional Pockels cell and one polarizer are required inside the regenerative amplifier cavity.
摘要翻译：提供了针对低增益增益介质进行了优化的再生放大器系统。该系统被配置为包括最小数量的腔内元件，同时仍然消除种子脉冲从输出光束的泄漏。此外，即使考虑到低增益再生放大器所需的长的积聚时间，放大脉冲的对比度也增加。这是使用振荡器和放大器之间的单个Pockels单元来实现的，以便为腔体选择单个种子脉冲，而不是使用法拉第隔离器。这将不需要的种子脉冲与输出脉冲分开的方向。当放大的脉冲离开空腔时，它通过相同的Pockels单元被导向远离振荡器的方向。再生放大器腔内只需要一个额外的Pockels单元和一个偏振器。

2. 发明授权

US08218587B2 Automated bandwidth / wavelength adjustment systems and methods for short pulse lasers and optical amplifiers 有权
标题翻译：用于短脉冲激光器和光放大器的自动带宽/波长调整系统和方法
公开(公告)号：US08218587B2
公开(公告)日：2012-07-10
申请号：US12790653
申请日：2010-05-28
申请人： Ventzislav Stoev , Kevin Holsinger , David S. Bell , Olaf Korth
发明人： Ventzislav Stoev , Kevin Holsinger , David S. Bell , Olaf Korth
IPC分类号： H01S3/10
CPC分类号： H01S3/105 , H01S3/08004 , H01S3/0805 , H01S3/094038 , H01S3/10069 , H01S3/1022 , H01S3/106 , H01S3/1068 , H01S3/1109 , H01S3/1306
摘要： Embodiments are directed to systems and methods for adjusting a wavelength, bandwidth or both. Such systems and methods may be applicable to laser beams within a laser cavity or amplifier. For some embodiments, such systems and methods may be used to allow a user to set a desired wavelength and bandwidth of a short pulse laser system for operation at those parameters without further adjustment by the user.
摘要翻译：实施例涉及用于调整波长，带宽或两者的系统和方法。这样的系统和方法可以适用于激光腔或放大器内的激光束。对于一些实施例，这样的系统和方法可以用于允许用户设置短脉冲激光系统的期望波长和带宽，以在这些参数下进行操作，而无需用户的进一步调整。

3. 发明申请

US20110292954A1 AUTOMATED BANDWIDTH / WAVELENGTH ADJUSTMENT SYSTEMS AND METHODS FOR SHORT PULSE LASERS AND OPTICAL AMPLIFIERS 有权
标题翻译：自动带宽/波长调整系统和短脉冲激光器和光放大器的方法
公开(公告)号：US20110292954A1
公开(公告)日：2011-12-01
申请号：US12790653
申请日：2010-05-28
申请人： Ventzislav Stoev , Kevin Holsinger , David S. Bell , Olaf Korth
发明人： Ventzislav Stoev , Kevin Holsinger , David S. Bell , Olaf Korth
IPC分类号： H01S3/10 , H01S3/0941 , H01S3/083
CPC分类号： H01S3/105 , H01S3/08004 , H01S3/0805 , H01S3/094038 , H01S3/10069 , H01S3/1022 , H01S3/106 , H01S3/1068 , H01S3/1109 , H01S3/1306
摘要： Embodiments are directed to systems and methods for adjusting a wavelength, bandwidth or both. Such systems and methods may be applicable to laser beams within a laser cavity or amplifier. For some embodiments, such systems and methods may be used to allow a user to set a desired wavelength and bandwidth of a short pulse laser system for operation at those parameters without further adjustment by the user.
摘要翻译：实施例涉及用于调整波长，带宽或两者的系统和方法。这样的系统和方法可以适用于激光腔或放大器内的激光束。对于一些实施例，这样的系统和方法可以用于允许用户设置短脉冲激光系统的期望波长和带宽，以在这些参数下进行操作，而无需用户的进一步调整。

4. 发明授权

US06853655B2 System for improved power control 有权
标题翻译：改善功率控制系统
公开(公告)号：US06853655B2
公开(公告)日：2005-02-08
申请号：US10301801
申请日：2002-11-20
申请人： Kevin Holsinger
发明人： Kevin Holsinger
IPC分类号： H01S3/08 , H01S3/098 , H01S3/109 , H01S3/13 , H01S3/131
CPC分类号： H01S3/13 , H01S3/094038 , H01S3/1022 , H01S3/1305 , H01S3/1312
摘要： A laser system includes a pump source that produces a first output. The pump source has a feedback loop with a first summing junction and a first command that has step quantization or digitized set point. An output device is coupled to the pump source to receive the first output and produce a second output. A feedback loop is coupled to the first summing junction. The feedback loop includes a second summing junction coupled to at least a portion of the second output. The second summing junction receives a second command and provides an input to the first summing junction. The feedback loop reduces the step quantization from the first output to provide finer control step of a property of the second output.
摘要翻译：激光系统包括产生第一输出的泵浦源。泵浦源具有具有第一求和点和具有步长量化或数字化设定点的第一命令的反馈回路。输出装置耦合到泵浦源以接收第一输出并产生第二输出。反馈回路耦合到第一求和接点。反馈回路包括耦合到第二输出的至少一部分的第二求和结。第二求和点接收第二命令并向第一求和结点提供输入。反馈环路从第一输出减少步长量化，以提供第二输出的特性的更精细的控制步骤。

5. 发明授权

US07016107B2 Low-gain regenerative amplifier system 有权
标题翻译：低增益再生放大器系统
公开(公告)号：US07016107B2
公开(公告)日：2006-03-21
申请号：US10762216
申请日：2004-01-20
申请人： James D. Kafka , Jianping Zhou , Kevin Holsinger
发明人： James D. Kafka , Jianping Zhou , Kevin Holsinger
IPC分类号： H01S3/00
CPC分类号： H01S3/235 , H01S3/0064 , H01S3/0085 , H01S3/107 , H01S3/1611 , H01S3/1618
摘要： A regenerative amplifier system that is optimized for low-gain gain media is provided. The system is configured to include a minimum number of intra-cavity elements while still eliminating the leakage of the seed pulses from the output beam. In addition, the contrast ratio of the amplified pulses is increased even considering the long build-up time that is required in low-gain regenerative amplifiers. This is accomplished using a single Pockels cell between the oscillator and amplifier to select a single seed pulse for the cavity, instead of using a Faraday isolator. This directs the unwanted seed pulses in a separate direction from the output pulse. When the amplified pulse exits the cavity, it is directed in a direction away from the oscillator by the same Pockels cell. Only one additional Pockels cell and one polarizer are required inside the regenerative amplifier cavity.
摘要翻译：提供了针对低增益增益介质进行了优化的再生放大器系统。该系统被配置为包括最小数量的腔内元件，同时仍然消除种子脉冲从输出光束的泄漏。此外，即使考虑到低增益再生放大器所需的长的积聚时间，放大脉冲的对比度也增加。这是使用振荡器和放大器之间的单个Pockels单元来实现的，以便为腔体选择单个种子脉冲，而不是使用法拉第隔离器。这将不需要的种子脉冲与输出脉冲分开的方向。当放大的脉冲离开空腔时，它通过相同的Pockels单元被导向远离振荡器的方向。再生放大器腔内只需要一个额外的Pockels单元和一个偏振器。

6. 发明申请

US20050078730A1 Optimizing power for second laser 审中-公开
标题翻译：优化第二激光器的功率
公开(公告)号：US20050078730A1
公开(公告)日：2005-04-14
申请号：US10952545
申请日：2004-09-27
申请人： Kevin Holsinger , John Ekstrand , Richard Boggy
发明人： Kevin Holsinger , John Ekstrand , Richard Boggy
IPC分类号： H01S3/08 , H01S3/098 , H01S3/1055 , H01S3/108 , H01S3/109 , H01S3/13 , H01S3/131 , H01S3/091
CPC分类号： H01S3/1312 , H01S3/08009 , H01S3/08022 , H01S3/0805 , H01S3/086 , H01S3/1055 , H01S3/1118 , H01S3/1305
摘要： Feedback from a power monitor sampling a portion of the output beam of a cavity is used to control the position of a pump beam relative to the cavity. The pump beam position or orientation is adjusted in response to a dither signal imposed on the position or tilt of an external optic or mirror in order to maximize the efficiency of the cavity in converting pump power to output power. Feedback based on the response of the power monitor may be used to control the position or tilt of the mirror or optic to which the dither was applied.
摘要翻译：来自功率监视器的对来自空腔的输出光束的一部分采样的反馈被用于控制泵浦光束相对于空腔的位置。响应于施加在外部光学器件或反射镜的位置或倾斜上的抖动信号来调节泵浦光束位置或取向，以便最大化将泵浦功率转换成输出功率的空腔的效率。基于功率监视器的响应的反馈可以用于控制施加抖动的反射镜或光学器件的位置或倾斜。

7. 发明授权

US5892783A Laser with temperature controller positioned in laser head 失效
标题翻译：带有温度控制器的激光器位于激光头中
公开(公告)号：US5892783A
公开(公告)日：1999-04-06
申请号：US858723
申请日：1997-05-19
申请人： Kevin Holsinger
发明人： Kevin Holsinger
IPC分类号： G02F1/35 , H01S3/042 , H01S3/08 , H01S3/081 , H01S3/0941 , H01S3/102 , H01S3/109 , H01S3/04
CPC分类号： H01S3/102 , H01S3/042 , G02F2001/3542 , H01S3/08072 , H01S3/0813 , H01S3/09415 , H01S3/1028 , H01S3/109
摘要： A laser includes a laser head and a power supply. At least two resonator mirrors define a resonator cavity. A gain medium is positioned in the resonator cavity. A temperature controller is positioned in the laser head and is coupled to the gain medium. The temperature controller maintains the gain medium at a temperature of 25 degrees C. or greater. A pump source supplies a pump beam to the gain medium and producing an output beam. The power source is coupled to the pump source.
摘要翻译：激光器包括激光头和电源。至少两个谐振器反射镜限定谐振腔。增益介质位于谐振腔中。温度控制器位于激光头中并且耦合到增益介质。温度控制器将增益介质保持在25摄氏度或更高的温度。泵浦源将泵浦光束提供给增益介质并产生输出光束。电源耦合到泵浦源。

8. 发明授权

US4872104A Windup prevention system for a control loop to prevent overshoot 失效
标题翻译：用于控制回路的防风防护系统，以防止过冲
公开(公告)号：US4872104A
公开(公告)日：1989-10-03
申请号：US181429
申请日：1988-04-14
申请人： Kevin Holsinger
发明人： Kevin Holsinger
IPC分类号： G05B5/01
CPC分类号： G05B5/01
摘要： An apparatus and method for eliminating integrator windup in control systems having a control input, a feedback signal and an actuator that can saturate in response to dynamic non linearities such as slew rate limits. The apparatus of the invention is comprised of circuitry that determines the rate of change of the output of the integrator and compares it to predetermined maximum allowable rates of change. If these maximum allowable rates of change have been exceeded, the comparator circuitry generates a compensation error signal which when combined with normal error signal integrated by the compensator tends to reduce the rate of change on the output of the integrator.
摘要翻译：一种用于消除具有控制输入，反馈信号和致动器的控制系统中的积分器组合的装置和方法，所述控制输入，反馈信号和致动器可响应于动态非线性（例如压摆率限制）而饱和。本发明的装置包括确定积分器的输出的变化率并将其与预定的最大允许变化率进行比较的电路。如果超过这些最大允许变化率，则比较器电路产生补偿误差信号，当与补偿器积分的正常误差信号相结合时，该误差信号倾向于降低积分器输出的变化率。

9. 发明授权

US06930822B2 Wavelength locker 有权
标题翻译：波长锁
公开(公告)号：US06930822B2
公开(公告)日：2005-08-16
申请号：US10301503
申请日：2002-11-20
申请人： Richard Boggy , Kevin Holsinger , Dixon Kwok Chung
发明人： Richard Boggy , Kevin Holsinger , Dixon Kwok Chung
IPC分类号： H01S3/08 , H01S3/098 , H01S3/1055 , H01S3/108 , H01S3/109 , H01S3/13 , H01S3/139 , G02F1/39
CPC分类号： H01S3/139 , H01S3/08009 , H01S3/08022 , H01S3/0805 , H01S3/086 , H01S3/101 , H01S3/1055 , H01S3/1305
摘要： Wavelength stability of an optical oscillator has been enhanced by feedback from an external position-sensing detector to control the position or tilt of an intracavity optical element, such as a mirror. The wavelength stability results from stabilization of the intracavity beam position relative to an aperture in the oscillator. The wavelength selectivity of the aperture results from incorporation of a dispersive element in the oscillator cavity that produces a mapping of wavelength to beam position at the aperture.
摘要翻译：通过来自外部位置感测检测器的反馈来调节光学振荡器的波长稳定性，以控制诸如反射镜之类的腔内光学元件的位置或倾斜。波长稳定性是由腔内光束位置相对于振荡器的孔径稳定而产生的。孔径的波长选择性是将分散元件结合在振荡器腔中，产生波长到孔径处的光束位置的映射。

10. 发明申请

US20050157382A1 Industrial directly diode-pumped ultrafast amplifier system 审中-公开
标题翻译：工业直接二极管泵浦超快放大器系统
公开(公告)号：US20050157382A1
公开(公告)日：2005-07-21
申请号：US11031500
申请日：2005-01-07
申请人： James Kafka , Jianping Zhou , Juerg Aus-Der-Au , Kevin Holsinger , Ventzislav Stoev
发明人： James Kafka , Jianping Zhou , Juerg Aus-Der-Au , Kevin Holsinger , Ventzislav Stoev
IPC分类号： H01S3/042 , H01S3/0941 , H01S3/098 , H01S3/16 , H01S3/23
CPC分类号： H01S3/0941 , H01S3/0092 , H01S3/042 , H01S3/1022 , H01S3/1312 , H01S3/1618 , H01S3/1675 , H01S3/2308
摘要： A directly diode-pumped amplifier system is disclosed which produces sub-picosecond pulses with an output power of 2 watts or more. Computer resources are coupled to the amplifier system and are configured to provide control of operating parameters of the amplifier system. An optional second harmonic generator is supplied to increase the contrast ratio and reduce the minimum focal spot size. This amplifier system can be utilized for material processing applications.
摘要翻译：公开了直接二极管泵浦放大器系统，其产生输出功率为2瓦或更大的亚皮秒脉冲。计算机资源耦合到放大器系统并且被配置为提供对放大器系统的操作参数的控制。提供可选的二次谐波发生器以增加对比度并减小最小焦斑尺寸。该放大器系统可用于材料处理应用。

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