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    • 9. 发明授权
    • Laser amplifiers with high gain and small thermal aberrations
    • 具有高增益和较小热像差的激光放大器
    • US07535633B2
    • 2009-05-19
    • US11328450
    • 2006-01-10
    • Kresimir FranjicRenzhong HuaR. J. Dwayne Miller
    • Kresimir FranjicRenzhong HuaR. J. Dwayne Miller
    • H01S5/00H01S3/16H01S3/042
    • H01S3/0941H01S3/005H01S3/025H01S3/0407H01S3/042H01S3/0604H01S3/0606H01S3/0612H01S3/0615H01S3/0632H01S3/094053H01S3/094057H01S3/094084H01S3/1611H01S3/1673H01S3/2333H01S3/2341H01S2301/02
    • The present invention discloses a laser amplifier with high gain and low thermally induced optical aberrations on the amplified laser beam. The amplifier designs allow simple multipass configurations to optimally extract the gain and reduce thermally induced index of refraction aberrations, making it possible to obtain an amplified laser beam of high quality combined with very high overall gains comparable to those achievable with expensive regenerative amplifiers. The amplifier includes a thin active laser solid to create the population inversion and associated heat generation within the thin laser active solid possible for the desired gain value. The system includes a cooling device in thermal contact with the thin active laser solid to provide good heat transport and high reflectivity coatings at the wavelengths of the pump and laser wavelengths. The pump light sources are laser diodes tuned to the maximum absorption of the laser active material. The amplifier also includes an optical system to transport the pump light to the laser active solid in such a way as to further confine the absorption of light along the two orthogonal directions in the plane of the laser active solid in order to get high population inversion and consequently high gains possible.
    • 本发明公开了一种在放大的激光束上具有高增益和低热诱导光学像差的激光放大器。 放大器设计允许简单的多通道配置以最佳地提取增益并减少热诱导的折射像差指数,使得可以获得高质量的放大激光束,并且具有与用昂贵的再生放大器可实现的总增益相当的非常高的总增益。 该放大器包括薄的有源激光器固体,以产生可用于所需增益值的薄激光器活性固体内的群体反演和相关的热量生成。 该系统包括与薄活性激光器固体热接触的冷却装置,以在泵和激光波长的波长处提供良好的热传递和高反射率涂层。 泵浦光源是激光二极管,被调整为激光活性材料的最大吸收。 该放大器还包括一个光学系统,用于将泵浦光传送到激光活性固体,以进一步限制沿着激光活性固体平面中的两个正交方向的光的吸收,以便获得高的种群反演和 因此可能获得高收益。