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    Fiber depolarizer for fabry-perot laser diodes
    1.
    发明授权
    Fiber depolarizer for fabry-perot laser diodes 有权
    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

    Applicant: Bernard G. Fidric ,  Shaoping Lu ,  Steven Sanders ,  Bruno Acklin

    Inventor： Bernard G. Fidric ,  Shaoping Lu ,  Steven Sanders ,  Bruno Acklin

    IPC: G02B6/10 ,  G02B6/34 ,  H01S5/00 ,  G02B6/00

    CPC classification number: G02B6/2786 ,  G02B6/274 ,  H01S5/005

    Abstract: 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.

    Abstract translation: 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。

    Injection seeding employing continuous wavelength sweeping for master-slave resonance
    3.
    发明申请
    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

    Applicant: Ningyi Luo ,  Sheng-Bai Zhu ,  Minzheng Wo ,  Shaoping Lu

    Inventor： Ningyi Luo ,  Sheng-Bai Zhu ,  Minzheng Wo ,  Shaoping Lu

    IPC: H01S3/10 ,  H01S3/13

    CPC classification number: H01S3/10092 ,  H01S3/094 ,  H01S3/094076 ,  H01S3/13 ,  H01S3/1625 ,  H01S3/1636 ,  H01S5/0427 ,  H01S5/0622 ,  H01S2301/02

    Abstract: 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.

    Injection seeding employing continuous wavelength sweeping for master-slave resonance
    5.
    发明授权
    Injection seeding employing continuous wavelength sweeping for master-slave resonance 有权
    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

    Applicant: Ningyi Luo ,  Sheng-Bai Zhu ,  Minzheng Wo ,  Shaoping Lu

    Inventor： Ningyi Luo ,  Sheng-Bai Zhu ,  Minzheng Wo ,  Shaoping Lu

    IPC: H01S3/098

    CPC classification number: H01S3/10092 ,  H01S3/094 ,  H01S3/094076 ,  H01S3/13 ,  H01S3/1625 ,  H01S3/1636 ,  H01S5/0427 ,  H01S5/0622 ,  H01S2301/02

    Abstract: 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.

    Abstract translation: 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。

    Solid-state lasers employing incoherent monochromatic pump
    6.
    发明授权
    Solid-state lasers employing incoherent monochromatic pump 有权
    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

    Applicant: Ningyi Luo ,  Sheng-Bai Zhu ,  Shaoping Lu ,  Feng Zhou

    Inventor： Ningyi Luo ,  Sheng-Bai Zhu ,  Shaoping Lu ,  Feng Zhou

    IPC: H01S3/093 ,  H01S3/091

    CPC classification number: H01S3/0933 ,  H01S3/025 ,  H01S3/0407 ,  H01S3/042

    Abstract: 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.

    Abstract translation: 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。

    Solid-state lasers employing incoherent monochromatic pump
    7.
    发明申请
    Solid-state lasers employing incoherent monochromatic pump 有权
    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

    Applicant: Ningyi Luo ,  Sheng-Hai Zhu ,  Shaoping Lu ,  Feng Zhou

    Inventor： Ningyi Luo ,  Sheng-Hai Zhu ,  Shaoping Lu ,  Feng Zhou

    IPC: H01S3/04 ,  H01S3/042 ,  H01S3/0933 ,  H01S3/16

    CPC classification number: H01S3/0933 ,  H01S3/025 ,  H01S3/0407 ,  H01S3/042

    Abstract: 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.

    Abstract translation: 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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