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    Differentially pumped optical amplifer and mopa device
    2.
    发明授权
    Differentially pumped optical amplifer and mopa device 失效
    差分泵浦光学放大器和mopa器件

    公开(公告)号：US5539571A

    公开(公告)日：1996-07-23

    申请号：US202359

    申请日：1994-02-28

    Applicant: David F. Welch ,  Donald R. Scifres ,  Robert G. Waarts ,  David G. Mehuys ,  Amos A. Hardy ,  Ross A. Parke

    Inventor： David F. Welch ,  Donald R. Scifres ,  Robert G. Waarts ,  David G. Mehuys ,  Amos A. Hardy ,  Ross A. Parke

    IPC: H01S5/026 ,  H01S5/042 ,  H01S5/062 ,  H01S5/10 ,  H01S5/12 ,  H01S5/125 ,  H01S5/16 ,  H01S5/187 ,  H01S5/20 ,  H01S5/50 ,  H01S3/00

    CPC classification number: H01S5/0425 ,  H01S5/026 ,  H01S5/20 ,  H01S5/50 ,  H01S2301/163 ,  H01S2301/166 ,  H01S5/0267 ,  H01S5/0422 ,  H01S5/06243 ,  H01S5/1014 ,  H01S5/1053 ,  H01S5/1064 ,  H01S5/1085 ,  H01S5/12 ,  H01S5/125 ,  H01S5/16 ,  H01S5/187 ,  H01S5/2036 ,  H01S5/5018

    Abstract: An optical amplifier semiconductor device which is differentially pumped and a master oscillator power amplifier (MOPA) device employing such an amplifier. The amplifier allows the light propagating therein to diverge along at least part of its length, and may be a flared amplifier having a gain region that increases in width toward its output at a rate that equals or exceeds the divergence of the light. The amplifier is pumped with a current density at its input end which is smaller than the current density used to pump the output end for maintaining coherence of the beam to high power levels. Differential pumping may be both longitudinal and lateral within the amplifier. A single mode preamplifier section may be optically coupled to the input end of the amplifier. The amplifier input may have a width which is the same as or wider than that of the preamplifier output. The preamplifier may have a constant mode width or may be tapered to alter the divergence of the beams provided to the amplifier section. The laser oscillator in the MOPA device may be a single mode DBR laser diode monolithically integrated on the same substrate as the optical amplifier. Laser sources external to an amplifier chip may also be used. The input portion of the amplifier or the preamplifier section, if present, may be modulated. The laser oscillator might also be modulated if it has a high Q cavity. Tunable laser oscillators are also disclosed.

    Abstract translation: 差分泵浦的光放大器半导体器件和采用这种放大器的主振荡器功率放大器（MOPA）器件。 放大器允许其中传播的光沿其长度的至少一部分发散，并且可以是具有增益区域的扩张放大器，该增益区域以等于或超过光的发散度的速率朝向其输出增加。 放大器在其输入端以电流密度泵送，该电流密度小于用于泵浦输出端的电流密度，以将光束的相干性保持在高功率水平。 差分泵浦可以在放大器内部纵向和横向两者。 单模前置放大器部分可以光耦合到放大器的输入端。 放大器输入可以具有与前置放大器输出的宽度相同或更宽的宽度。 前置放大器可以具有恒定的模式宽度，或者可以是锥形的，以改变提供给放大器部分的光束的发散度。 MOPA器件中的激光振荡器可以是单模DBR激光二极管，其单片集成在与光放大器相同的衬底上。 还可以使用放大器芯片外部的激光源。 放大器或前置放大器部分的输入部分（如果存在）可以被调制。 如果激光振荡器具有高Q腔，则也可能会被调制。 还公开了可调谐激光振荡器。

    High-power, kink-free, single mode laser diodes
    6.
    发明授权
    High-power, kink-free, single mode laser diodes 有权
    大功率，无扭结，单模激光二极管

    公开(公告)号：US06816531B1

    公开(公告)日：2004-11-09

    申请号：US09518421

    申请日：2000-03-03

    Applicant: Victor Rossin ,  Ross A. Parke ,  Jo S. Major

    Inventor： Victor Rossin ,  Ross A. Parke ,  Jo S. Major

    IPC: H01S500

    CPC classification number: H01S5/146 ,  G02B6/30 ,  G02B6/32 ,  G02B2006/12097 ,  H01S3/094003 ,  H01S5/02415 ,  H01S5/0652 ,  H01S5/0655 ,  H01S5/1064 ,  H01S2301/18

    Abstract: A high power, single lateral mode semiconductor laser has a waveguide with regions of different widths coupled by a tapered region. The laser has a laterally confining optical waveguide having a highly reflecting first end and a second end. The optical waveguide has a first portion extending from the first end and a second portion extending from the second end. The first and second portions are coupled by a tapered waveguide. A width of the first portion is less than a width of the second portion. The first portion filters lateral optical modes higher than a fundamental lateral optical mode. An output is emitted from the second end of the optical waveguide.

    Abstract translation: 高功率，单横向半导体激光器具有波导，其具有通过锥形区域耦合的不同宽度的区域。 激光器具有横向限制的光波导，其具有高反射的第一端和第二端。 光波导具有从第一端延伸的第一部分和从第二端延伸的第二部分。 第一和第二部分通过锥形波导耦合。 第一部分的宽度小于第二部分的宽度。 第一部分滤除高于基本横向光学模式的横向光学模式。 从光波导的第二端发射输出。

    Differentially patterned pumped optical semiconductor gain media
    8.
    发明授权
    Differentially patterned pumped optical semiconductor gain media 失效
    差分图案泵浦光学半导体增益介质

    公开(公告)号：US5793521A

    公开(公告)日：1998-08-11

    申请号：US684786

    申请日：1996-07-22

    Applicant: Stephen O'Brien ,  Alexander Schoenfelder ,  Robert J. Lang ,  Amos A. Hardy ,  Ross A. Parke ,  David F. Welch

    Inventor： Stephen O'Brien ,  Alexander Schoenfelder ,  Robert J. Lang ,  Amos A. Hardy ,  Ross A. Parke ,  David F. Welch

    IPC: H01S5/026 ,  H01S5/042 ,  H01S5/062 ,  H01S5/10 ,  H01S5/12 ,  H01S5/125 ,  H01S5/16 ,  H01S5/187 ,  H01S5/20 ,  H01S5/50 ,  H01S3/00

    CPC classification number: H01S5/026 ,  H01S5/0425 ,  H01S5/20 ,  H01S5/50 ,  H01S2301/163 ,  H01S2301/166 ,  H01S5/0267 ,  H01S5/0422 ,  H01S5/06243 ,  H01S5/1014 ,  H01S5/1053 ,  H01S5/1064 ,  H01S5/1085 ,  H01S5/12 ,  H01S5/125 ,  H01S5/16 ,  H01S5/187 ,  H01S5/2036 ,  H01S5/5018

    Abstract: An optical gain medium comprising, for example, an optical semiconductor device which is differentially pumped and a master oscillator power amplifier (MOPA) device employing such an amplifier. The gain medium may have a linear stripe region or a diverging stripe region that allows the light propagating therein to diverge along at least part of its length, such as a flared or tapered amplifier having a gain region that increases in width toward its output at a rate that equals or exceeds the divergence of the light. The amplifier is pumped with a current density at its input end which is smaller than the current density used to pump the output end for maintaining coherence of the beam to high power levels employing differential pumping. Differential pumping may be both longitudinal and lateral within the amplifier and may be patterned to reduce the peak modal gain observed longitudinally along and/or laterally across the pumped stripe region of the gain medium so that he experienced modal gain of the propagating light is more balanced along the length of the stripe region, i.e., rendered significantly more uniform in distribution, providing for higher diffraction limited performance without optical filamentation formation.

    Abstract translation: 一种光增益介质，包括例如差分泵浦的光半导体器件和使用这种放大器的主振荡器功率放大器（MOPA）器件。 增益介质可以具有线性条纹区域或发散条纹区域，其允许其中传播的光沿着其长度的至少一部分发散，例如具有增大区域的扩张区域或锥形放大器，该增宽区域在宽度方向上朝向其输出端 等于或超过光的分歧。 放大器在其输入端以电流密度泵送，该电流密度小于用于泵浦输出端的电流密度，以便通过差分泵浦将光束的相干保持为高功率电平。 差分泵浦可以在放大器内纵向和横向两者，并且可以被图案化以减少在增益介质的泵浦条带区域沿纵向和/或横向观察到的峰值模态增益，使得他经历了传播光的模态增益更均衡 沿着条纹区域的长度，即在分布中显着地更均匀地提供，从而提供更高的衍射限制性能，而不需要光学成丝形成。

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