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1. 发明申请

WO2009120603A3 SYSTEMS AND METHODS FOR LASER PULSE EQUALIZATION 审中-公开
标题翻译：用于激光脉冲均衡的系统和方法
公开(公告)号：WO2009120603A3
公开(公告)日：2009-12-23
申请号：PCT/US2009037824
申请日：2009-03-20
申请人： ELECTRO SCIENT IND INC , SUN YUNLONG , CHANG FENG
发明人： SUN YUNLONG , CHANG FENG
IPC分类号： H01S3/10 , H01S5/06
CPC分类号： H01S3/0941 , H01S3/042 , H01S3/094076 , H01S3/10046 , H01S3/10069 , H01S3/1024 , H01S3/1068 , H01S3/117 , H01S3/1306
摘要： Systems and methods provide laser pulse equalization at different pulse repetition frequencies (PRFs). After initially pumping a lasing medium from a first pumping level to a peak pumping level, a controller may cause a pump source to continue pumping the lasing medium according to a pulse equalization pumping curve. The equalization pumping curve may be determined based on testing laser pulse parameters at different PRFs to achieve an optimal equalization result of the pulse parameters. The optimization metric used to evaluate various equalization pumping curves may include a consistency of the pulse energy level, peak power level, and/or pulse width of the laser under different PRFs. The equalization pumping curve may be a descending curve from the peak pumping level to the first pumping level. The equalization pumping curve may be a linearly declining curve, a substantially exponentially declining curve, a parametrically declining curve, or any other curve type.
摘要翻译：系统和方法提供不同脉冲重复频率（PRF）的激光脉冲均衡。在初始将激光介质从第一泵浦电平泵送到峰值泵浦电平之后，控制器可以使泵浦源根据脉冲均衡泵送曲线继续泵浦激光介质。可以基于在不同PRF处测试激光脉冲参数来确定均衡泵送曲线，以实现脉冲参数的最佳均衡结果。用于评估各种均衡泵送曲线的优化度量可以包括不同PRF下的激光器的脉冲能级，峰值功率电平和/或脉冲宽度的一致性。均衡泵送曲线可以是从峰值泵送电平到第一泵浦电平的下降曲线。均衡泵送曲线可以是线性下降曲线，基本上呈指数下降的曲线，参数下降曲线或任何其它曲线类型。

2. 发明申请

WO2007016612A2 METHOD OF OPERATING AN AVALANCHE PHOTODIODE FOR REDUCING GAIN NORMALIZED DARK CURRENT 审中-公开
标题翻译：操作AVALANCHE光电离子以减少增益正常化的暗电流的方法
公开(公告)号：WO2007016612A2
公开(公告)日：2007-02-08
申请号：PCT/US2006030052
申请日：2006-08-02
申请人： DRS INFRARED TECHNOLOGIES LP , BECK JEFFREY DON , MITRA PRADIP , WAN CHANG-FENG , KINCH MICHAEL A
发明人： BECK JEFFREY DON , MITRA PRADIP , WAN CHANG-FENG , KINCH MICHAEL A
IPC分类号： H01L31/00 , H01L31/0296
CPC分类号： H01L31/02027 , H01L31/0296 , H01L31/02966 , H01L31/1032 , H01L31/105 , H01L31/107
摘要： An avalanche photodiode is operated in avalanche mode at a selected reverse bias that achieves high gain and a reduced gain normalized dark current.
摘要翻译：雪崩光电二极管以选择的反向偏置在雪崩模式下操作，其实现高增益和减小的标准化暗电流。

3. 发明申请

WO2007016612A3 METHOD OF OPERATING AN AVALANCHE PHOTODIODE FOR REDUCING GAIN NORMALIZED DARK CURRENT 审中-公开
公开(公告)号：WO2007016612A3
公开(公告)日：2007-02-08
申请号：PCT/US2006/030052
申请日：2006-08-02
申请人： DRS INFRARED TECHNOLOGIES, LP , BECK, Jeffrey, Don , MITRA, Pradip , WAN, Chang-Feng , KINCH, Michael, A.
发明人： BECK, Jeffrey, Don , MITRA, Pradip , WAN, Chang-Feng , KINCH, Michael, A.
IPC分类号： H01L31/00 , H01L31/0296
摘要： An avalanche photodiode is operated in avalanche mode at a selected reverse bias that achieves high gain and a reduced gain normalized dark current.

4. 发明申请

WO2012135665A2 STABILIZATION OF PULSED MODE SEED LASERS 审中-公开
标题翻译：脉冲模式种子激光的稳定性
公开(公告)号：WO2012135665A2
公开(公告)日：2012-10-04
申请号：PCT/US2012/031530
申请日：2012-03-30
申请人： ELECTRO SCIENTIFIC INDUSTRIES, INC. , LU, Fuyuan , CHANG, Feng , WU, Haisheng , SUN, Yunlong
发明人： LU, Fuyuan , CHANG, Feng , WU, Haisheng , SUN, Yunlong
IPC分类号： H01S3/10 , H01S5/068
CPC分类号： B23K26/0084 , B23K26/0622 , B23K26/389 , H01S3/0064 , H01S3/0085 , H01S3/0092 , H01S3/06754 , H01S3/10015 , H01S3/1618 , H01S3/1673 , H01S3/2316 , H01S3/2375 , H01S5/0428 , H01S5/06216 , H01S5/0622 , H01S5/0654
摘要： A programmable tailored laser pulse generator (10) including a pulsed seed laser source (12), a laser amplifier (20), and an optical power amplifier (30) produces high power tailored laser pulses (32) shaped in response to a programmable analog tailored pulse signal applied to a seed laser (first embodiment) or an external modulator of continuous-wave seed laser output (second embodiment). The programmable analog tailored pulse signal is generated by combining multiple individually programmable analog pulses generated by a multi-channel signal generator (18). A bias applied to the pulsed seed laser source generates pre-lasing prior to producing a tailored laser pulse so that the seed laser source spectral line and line width stabilize within a narrow gain line width of a solid-state laser amplifier, thereby to impart pulse peak stability of the laser output. The tailored laser pulse generator allows for generating harmonics at shorter wavelengths and provides an economical, reliable laser source for a variety of micromachining applications.
摘要翻译：包括脉冲种子激光源（12），激光放大器（20）和光功率放大器（30）的可编程定制的激光脉冲发生器（10）产生响应于可编程模拟施加到种子激光器的定制脉冲信号（第一实施例）或连续波种子激光器输出的外部调制器（第二实施例）。可编程模拟定制的脉冲信号通过组合由多通道信号发生器（18）产生的多个单独可编程的模拟脉冲来产生。施加到脉冲种子激光源的偏压在产生定制的激光脉冲之前产生预激光，使得种子激光源光谱线和线宽度稳定在固态激光放大器的窄增益线宽内，由此赋予脉冲激光输出的峰值稳定性。定制的激光脉冲发生器允许在较短波长处产生谐波，并为各种微加工应用提供经济可靠的激光源。

5. 发明申请

WO2012135665A3 STABILIZATION OF PULSED MODE SEED LASERS 审中-公开
标题翻译：脉冲式种子激光器的稳定化
公开(公告)号：WO2012135665A3
公开(公告)日：2012-12-27
申请号：PCT/US2012031530
申请日：2012-03-30
申请人： ELECTRO SCIENT IND INC , LU FUYUAN , CHANG FENG , WU HAISHENG , SUN YUNLONG
发明人： LU FUYUAN , CHANG FENG , WU HAISHENG , SUN YUNLONG
IPC分类号： H01S3/10 , H01S5/068
CPC分类号： B23K26/0084 , B23K26/0622 , B23K26/389 , H01S3/0064 , H01S3/0085 , H01S3/0092 , H01S3/06754 , H01S3/10015 , H01S3/1618 , H01S3/1673 , H01S3/2316 , H01S3/2375 , H01S5/0428 , H01S5/06216 , H01S5/0622 , H01S5/0654
摘要： A programmable tailored laser pulse generator (10) including a pulsed seed laser source (12), a laser amplifier (20), and an optical power amplifier (30) produces high power tailored laser pulses (32) shaped in response to a programmable analog tailored pulse signal applied to a seed laser (first embodiment) or an external modulator of continuous-wave seed laser output (second embodiment). The programmable analog tailored pulse signal is generated by combining multiple individually programmable analog pulses generated by a multi-channel signal generator (18). A bias applied to the pulsed seed laser source generates pre-lasing prior to producing a tailored laser pulse so that the seed laser source spectral line and line width stabilize within a narrow gain line width of a solid-state laser amplifier, thereby to impart pulse peak stability of the laser output. The tailored laser pulse generator allows for generating harmonics at shorter wavelengths and provides an economical, reliable laser source for a variety of micromachining applications.
摘要翻译：包括脉冲种子激光源（12），激光放大器（20）和光功率放大器（30）的可编程定制激光脉冲发生器（10）产生高功率定制激光脉冲（32），其响应于可编程模拟（第一实施例）或连续波种子激光器输出的外部调制器（第二实施例）中的定制脉冲信号。可编程模拟定制脉冲信号是通过组合由多通道信号发生器（18）产生的多个单独可编程模拟脉冲而生成的。施加到脉冲种子激光源的偏压在产生定制激光脉冲之前产生预激光，使得种子激光源光谱线和线宽稳定在固态激光放大器的窄增益线宽内，从而赋予脉冲激光输出的峰值稳定性。量身定制的激光脉冲发生器允许在较短波长处产生谐波，并为各种微机械应用提供经济可靠的激光源。

6. 发明申请

WO2009120603A2 SYSTEMS AND METHODS FOR LASER PULSE EQUALIZATION 审中-公开
标题翻译：用于激光脉冲均衡的系统和方法
公开(公告)号：WO2009120603A2
公开(公告)日：2009-10-01
申请号：PCT/US2009/037824
申请日：2009-03-20
申请人： ELECTRO SCIENTIFIC INDUSTRIES, INC. , SUN, Yunlong , CHANG, Feng
发明人： SUN, Yunlong , CHANG, Feng
IPC分类号： H01S3/10 , H01S5/06
CPC分类号： H01S3/0941 , H01S3/042 , H01S3/094076 , H01S3/10046 , H01S3/10069 , H01S3/1024 , H01S3/1068 , H01S3/117 , H01S3/1306
摘要： Systems and methods provide laser pulse equalization at different pulse repetition frequencies (PRFs). After initially pumping a lasing medium from a first pumping level to a peak pumping level, a controller may cause a pump source to continue pumping the lasing medium according to a pulse equalization pumping curve. The equalization pumping curve may be determined based on testing laser pulse parameters at different PRFs to achieve an optimal equalization result of the pulse parameters. The optimization metric used to evaluate various equalization pumping curves may include a consistency of the pulse energy level, peak power level, and/or pulse width of the laser under different PRFs. The equalization pumping curve may be a descending curve from the peak pumping level to the first pumping level. The equalization pumping curve may be a linearly declining curve, a substantially exponentially declining curve, a parametrically declining curve, or any other curve type.
摘要翻译：系统和方法在不同的脉冲重复频率（PRF）下提供激光脉冲均衡。在将激光介质从第一泵浦水平泵入峰值泵浦水平之后，控制器可以使得泵浦源根据脉冲均衡泵浦曲线继续泵浦激光介质。均衡泵浦曲线可基于在不同PRF处测试激光脉冲参数来确定，以实现脉冲参数的最佳均衡结果。用于评估各种均衡泵浦曲线的优化度量可以包括不同PRF下激光的脉冲能量水平，峰值功率水平和/或脉冲宽度的一致性。均衡泵送曲线可以是从峰值泵送水平到第一泵水平的下降曲线。均衡泵送曲线可以是线性下降曲线，大致指数下降曲线，参数下降曲线或任何其他曲线类型。

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