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    • 23. 发明授权
    • Semiconductor lasers and amplifiers with grating-induced anisotropic waveguide
    • 具有光栅诱导各向异性波导的半导体激光器和放大器
    • US06421363B1
    • 2002-07-16
    • US09270737
    • 1999-03-16
    • Marek A. OsinskiAlexander P. BogatovWilliam E. Thompson
    • Marek A. OsinskiAlexander P. BogatovWilliam E. Thompson
    • H01S500
    • H01S5/1032H01S5/1203H01S5/124H01S5/2036H01S5/50
    • The present invention provides a coherent light-generating semiconductor structure comprising: at least one active region including a pumped portion for achieving optical gain; a first optical waveguide for confining light waves in the transverse direction and for propagating light waves along the optical axis of said first optical waveguide; first and second reflective means, the first and second reflective means being spaced apart from one another and defining a resonant optical cavity therebetween, the pumped portion of the at least one active region being located at least partially within the resonant optical cavity, and the resonant optical cavity encompassing at least a portion of the optical waveguide; the active region, the optical waveguide, and the resonant optical cavity having properties necessary to establish and maintain a principal optical mode; a grating located in at least a portion of the resonant optical cavity, the grating having grating teeth oriented at an angle relative to the first and second reflective means, such that substantially all excited light waves which are incident on the first and second reflective means are out of the Bragg resonance bandwidth of the grating. The present invention also provides a method for reducing filamentation in a high-power laser or amplifier.
    • 本发明提供了一种相干光产生半导体结构,包括:至少一个有源区,包括用于实现光增益的泵浦部分; 第一光波导,用于限制横向的光波并沿着所述第一光波导的光轴传播光波; 第一和第二反射装置,第一和第二反射装置彼此间隔开并且在它们之间限定谐振光学腔,所述至少一个有源区域的泵浦部分至少部分地位于谐振光学腔内,并且谐振 光腔,其包围光波导的至少一部分; 有源区,光波导和谐振光腔具有建立和维持主光学模式所需的特性; 位于所述谐振光腔的至少一部分中的光栅,所述光栅具有相对于所述第一和第二反射装置成一角度的光栅齿,使得入射在所述第一和第二反射装置上的基本上所有激发的光都是 离开光栅的布拉格共振带宽。 本发明还提供了一种降低高功率激光或放大器中的细丝的方法。