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1. 发明授权

US06870973B2 Fiber depolarizer for fabry-perot laser diodes 有权
标题翻译：用于fabry-perot激光二极管的光纤去极化器
公开(公告)号：US06870973B2
公开(公告)日：2005-03-22
申请号：US10263109
申请日：2002-10-02
申请人： Bernard G. Fidric , Shaoping Lu , Steven Sanders , Bruno Acklin
发明人： Bernard G. Fidric , Shaoping Lu , Steven Sanders , Bruno Acklin
IPC分类号： G02B6/10 , G02B6/34 , H01S5/00 , G02B6/00
CPC分类号： G02B6/2786 , G02B6/274 , H01S5/005
摘要： A Lyot depolarizer for depolarizing a laser with multiple longitudinal modes comprises two segments of PM fiber optimized for length as a function of the longitudinal mode spacing of the laser source, and not as taught in the prior art as a function of the laser coherence length. The present invention has found secondary coherence peaks in the coherence function of a multiple longitudinal mode source, which can significantly worsen the DoP if the PM fiber lengths are significantly extended beyond optimum, contrary to the teaching in the prior art. The present invention makes use of the periodic structure of the source spectrum by converting half the longitudinal modes to an orthogonal polarization state. As a result a significantly shorter fiber depolarizer is needed than for a single longitudinal mode source. Greater temperature stability is achieved by properly adjusting the lengths of both segments of PM fiber.
摘要翻译：用于对具有多个纵向模式去激光的Lyot去极化器包括针对作为激光源的纵向模式间隔的函数的长度优化的两段PM光纤，并且不像现有技术中作为激光相干长度的函数所教导。本发明已经发现多纵向模式源的相干函数中的二次相干峰值，与现有技术中的教导相反，如果PM光纤长度显着延伸超出最佳值，则可以显着恶化DoP。本发明通过将纵向模式的一半转换为正交偏振状态来利用源光谱的周期性结构。因此，对于单个纵向模式源，需要明显更短的纤维去极化器。通过适当调整PM纤维两段的长度可实现更高的温度稳定性。

2. 发明授权

US07535937B2 Monolithic microchip laser with intracavity beam combining and sum frequency or difference frequency mixing 失效
标题翻译：单片微芯片激光器具有腔内光束组合和和频率或差频混频
公开(公告)号：US07535937B2
公开(公告)日：2009-05-19
申请号：US11378552
申请日：2006-03-18
申请人： Ningyi Luo , Sheng-Bai Zhu , Shaoping Lu
发明人： Ningyi Luo , Sheng-Bai Zhu , Shaoping Lu
IPC分类号： H01S3/10 , H01S3/08
CPC分类号： G02F1/3534 , G02F1/3544 , H01S3/005 , H01S3/0405 , H01S3/0602 , H01S3/0604 , H01S3/0612 , H01S3/0627 , H01S3/07 , H01S3/08 , H01S3/08054 , H01S3/08086 , H01S3/0809 , H01S3/0811 , H01S3/082 , H01S3/09415 , H01S3/108 , H01S3/1083 , H01S3/109 , H01S3/1611 , H01S3/1643 , H01S3/1673 , H01S3/2383 , H01S2302/00
摘要： A method for producing low-noise laser output at various wavelengths and/or in various operation modes in a monolithic microchip laser comprises schemes of generating two fundamental beams in separate cavities, precise intracavity beam combination based on the walk-off effect in birefringent crystal, and wavelength conversion in nonlinear optical crystals. The fundamental beams are produced from light sources selected upon the desired wavelengths, polarizations, and other features related to the laser output. Low-noise laser devices operated in SLM or with spectra of flat-top or desired bandwidths are constructed according to the method. High-volume fabrication is feasible. Apparatus of compact size and efficient frequency conversion is demonstrated with various configurations including those for generating low-noise 491 nm laser, as a replacement of Argon ion laser.
摘要翻译：一种用于在单片微芯片激光器中以各种波长和/或各种操作模式生产低噪声激光输出的方法包括在单独的腔中产生两个基本光束的方案，基于双折射晶体的离散效应的精确的腔内光束组合，和非线性光学晶体的波长转换。光束根据所需的波长，极化以及与激光输出相关的其他特征选择的光源产生。根据该方法构建以SLM运行的低噪声激光装置或平顶或期望带宽的光谱。大容量制造是可行的。用于产生低噪声491nm激光器的各种配置，作为氩离子激光器的替代，证明了紧凑尺寸和高效率变频的装置。

3. 发明申请

US20060215714A1 Injection seeding employing continuous wavelength sweeping for master-slave resonance 有权
公开(公告)号：US20060215714A1
公开(公告)日：2006-09-28
申请号：US11170911
申请日：2005-06-29
申请人： Ningyi Luo , Sheng-Bai Zhu , Minzheng Wo , Shaoping Lu
发明人： Ningyi Luo , Sheng-Bai Zhu , Minzheng Wo , Shaoping Lu
IPC分类号： H01S3/10 , H01S3/13
CPC分类号： H01S3/10092 , H01S3/094 , H01S3/094076 , H01S3/13 , H01S3/1625 , H01S3/1636 , H01S5/0427 , H01S5/0622 , H01S2301/02
摘要： A method for effective injection seeding is based on continuous wavelength sweeping for matching the injected seeds with one or more longitudinal mode(s) of the slave oscillator in every pump pulse. This is achieved through rapidly varying laser drive current resulted from RF modulation. Depending on the modulation parameters, the seed may be operated at quasi-CW or pulsed mode, with a narrow or broad bandwidth, for injection seeding of single longitudinal mode or multimode. The wavelength and bandwidth of the laser output can be tuned according to the needs. From pulse to pulse, the master-slave resonance may occur at different wavelengths upon cavity length fluctuations. Cavity length control via complicated feedback devices and phase locking schemes are consequently not required. The present invention also encompasses an injection seeded solid-state laser constructed in accordance with the inventive method and a novel application of RF modulated laser diode to spectral purification and producing high power Gaussian beam with narrow pulse width in a stable, reliable, and cost-effective manner.

4. 发明申请

US20060209912A1 Monolithic microchip laser with intracavity beam combining and sum frequency or difference frequency mixing 失效
公开(公告)号：US20060209912A1
公开(公告)日：2006-09-21
申请号：US11378552
申请日：2006-03-18
申请人： Ningyi Luo , Sheng-Bai Zhu , Shaoping Lu
发明人： Ningyi Luo , Sheng-Bai Zhu , Shaoping Lu
IPC分类号： H01S3/10 , H01S3/11 , H01S3/091 , H01S3/094 , H01S3/092
CPC分类号： G02F1/3534 , G02F1/3544 , H01S3/005 , H01S3/0405 , H01S3/0602 , H01S3/0604 , H01S3/0612 , H01S3/0627 , H01S3/07 , H01S3/08 , H01S3/08054 , H01S3/08086 , H01S3/0809 , H01S3/0811 , H01S3/082 , H01S3/09415 , H01S3/108 , H01S3/1083 , H01S3/109 , H01S3/1611 , H01S3/1643 , H01S3/1673 , H01S3/2383 , H01S2302/00
摘要： A method for producing low-noise laser output at various wavelengths and/or in various operation modes in a monolithic microchip laser comprises schemes of generating two fundamental beams in separate cavities, precise intracavity beam combination based on the walk-off effect in birefringent crystal, and wavelength conversion in nonlinear optical crystals. The fundamental beams are produced from light sources selected upon the desired wavelengths, polarizations, and other features related to the laser output. Low-noise laser devices operated in SLM or with spectra of flat-top or desired bandwidths are constructed according to the method. High-volume fabrication is feasible. Apparatus of compact size and efficient frequency conversion is demonstrated with various configurations including those for generating low-noise 491 nm laser, as a replacement of Argon ion laser.

5. 发明授权

US07542489B2 Injection seeding employing continuous wavelength sweeping for master-slave resonance 有权
标题翻译：采用连续波长扫描进行主 - 从共振的注射接种
公开(公告)号：US07542489B2
公开(公告)日：2009-06-02
申请号：US11170911
申请日：2005-06-29
申请人： Ningyi Luo , Sheng-Bai Zhu , Minzheng Wo , Shaoping Lu
发明人： Ningyi Luo , Sheng-Bai Zhu , Minzheng Wo , Shaoping Lu
IPC分类号： H01S3/098
CPC分类号： H01S3/10092 , H01S3/094 , H01S3/094076 , H01S3/13 , H01S3/1625 , H01S3/1636 , H01S5/0427 , H01S5/0622 , H01S2301/02
摘要： A method for effective injection seeding is based on continuous wavelength sweeping for matching the injected seeds with one or more longitudinal mode(s) of the slave oscillator in every pump pulse. This is achieved through rapidly varying laser drive current resulted from RF modulation. Depending on the modulation parameters, the seed may be operated at quasi-CW or pulsed mode, with a narrow or broad bandwidth, for injection seeding of single longitudinal mode or multimode. The wavelength and bandwidth of the laser output can be tuned according to the needs. From pulse to pulse, the master-slave resonance may occur at different wavelengths upon cavity length fluctuations. Cavity length control via complicated feedback devices and phase locking schemes are consequently not required. The present invention also encompasses an injection seeded solid-state laser constructed in accordance with the inventive method and a novel application of RF modulated laser diode to spectral purification and producing high power Gaussian beam with narrow pulse width in a stable, reliable, and cost-effective manner.
摘要翻译：一种有效注射接种的方法是基于连续波长扫描，用于在每个泵浦脉冲中使注入的种子与从属振荡器的一个或多个纵向模式相匹配。这是通过RF调制产生的快速变化的激光驱动电流实现的。根据调制参数，种子可以准CW或脉冲模式，具有窄或宽带宽，用于单纵向模式或多模式的注射播种。可以根据需要调整激光输出的波长和带宽。从脉冲到脉冲，主 - 从谐振可能发生在不同波长的腔长度波动。因此，不需要通过复杂的反馈装置和相位锁定方案的腔长度控制。本发明还包括根据本发明方法构建的注射接种固态激光器和RF调制激光二极管的新颖应用，用于频谱净化并以稳定，可靠和成本低廉的方式产生具有窄脉冲宽度的高功率高斯光束，有效的方式。

6. 发明授权

US07522651B2 Solid-state lasers employing incoherent monochromatic pump 有权
标题翻译：采用非相干单色泵的固态激光器
公开(公告)号：US07522651B2
公开(公告)日：2009-04-21
申请号：US11052725
申请日：2005-02-07
申请人： Ningyi Luo , Sheng-Bai Zhu , Shaoping Lu , Feng Zhou
发明人： Ningyi Luo , Sheng-Bai Zhu , Shaoping Lu , Feng Zhou
IPC分类号： H01S3/093 , H01S3/091
CPC分类号： H01S3/0933 , H01S3/025 , H01S3/0407 , H01S3/042
摘要： Solid-state laser(s) pumped by incoherent, monochromatic light from sources such as LED arrays and integrating technologies such as high power LED arrays and solid-state laser materials in conjunction with efficient and uniform absorption of pumping energies through a diffusing pump chamber. The resulting laser(s) are compact, robust, low-cost, and able to produce high power output for practical applications. It may efficiently operate over wide temperature and performance ranges, at CW or pulse modes, even with ultra short pulse width and/or extremely high repetition rates. Our inventive structure(s) is/are highly flexible and applicable to a large group of lasing media including those with very short upper state life times. Advantageously, they may be applied to a plethora of laser systems at wavelengths that have important applications and unavailable to other direct pumping technologies.
摘要翻译：通过来自诸如LED阵列的源的非相干单色光以及诸如大功率LED阵列和固态激光材料的集成技术泵浦的固体激光器结合通过扩散泵室的泵浦能量的有效和均匀的吸收。所产生的激光器是紧凑的，坚固的，低成本的，并且能够为实际应用产生高功率输出。即使在超短脉冲宽度和/或极高的重复率下，它也可以在CW或脉冲模式下在宽温度和性能范围内有效地工作。我们的创新结构非常灵活，适用于大量的激光介质，包括具有非常短的上限寿命的激光介质。有利的是，它们可以应用于具有重要应用的波长的多个激光系统，并且对于其它直接泵浦技术不可用。

7. 发明申请

US20050201442A1 Solid-state lasers employing incoherent monochromatic pump 有权
标题翻译：采用非相干单色泵的固态激光器
公开(公告)号：US20050201442A1
公开(公告)日：2005-09-15
申请号：US11052725
申请日：2005-02-07
申请人： Ningyi Luo , Sheng-Hai Zhu , Shaoping Lu , Feng Zhou
发明人： Ningyi Luo , Sheng-Hai Zhu , Shaoping Lu , Feng Zhou
IPC分类号： H01S3/04 , H01S3/042 , H01S3/0933 , H01S3/16
CPC分类号： H01S3/0933 , H01S3/025 , H01S3/0407 , H01S3/042
摘要： Solid-state laser(s) pumped by incoherent, monochromatic light from sources such as LED arrays and integrating technologies such as high power LED arrays and solid-state laser materials in conjunction with efficient and uniform absorption of pumping energies through a diffusing pump chamber. The resulting laser(s) are compact, robust, low-cost, and able to produce high power output for practical applications. It may efficiently operate over wide temperature and performance ranges, at CW or pulse modes, even with ultra short pulse width and/or extremely high repetition rates. Our inventive structure(s) is/are highly flexible and applicable to a large group of lasing media including those with very short upper state life times. Advantageously, they may be applied to a plethora of laser systems at wavelengths that have important applications and unavailable to other direct pumping technologies.
摘要翻译：通过来自诸如LED阵列的源的非相干单色光以及诸如大功率LED阵列和固态激光材料的集成技术泵浦的固体激光器结合通过扩散泵室的泵浦能量的有效和均匀的吸收。所产生的激光器是紧凑的，坚固的，低成本的，并且能够为实际应用产生高功率输出。即使在超短脉冲宽度和/或极高的重复率下，它也可以在CW或脉冲模式下在宽温度和性能范围内高效运行。我们的创新结构非常灵活，适用于大量的激光介质，包括具有非常短的上限寿命的激光介质。有利的是，它们可以应用于具有重要应用的波长的多个激光系统，并且对于其它直接泵浦技术不可用。

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