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对脉冲Nd:YAG激光器抽运的双池受激布里渊散射(SBS)相位共轭镜进行了实验研究,将相位共轭镜后向反射光束馈入YAG放大级,经放大级放大,由偏振片耦合输出的激光束具有高质量、脉宽可调的特点,远场发散角接近1倍衍射极限。同时研究了远场发散角和输出能量稳定性随抽运能量及双池间距的变化关系,通过选用最佳抽运能量,远场发散角及激光器总体输出能量的波动性都可以控制在5%以内。
The double-pool stimulated Brillouin scattering (SBS) phase conjugate mirror with pulsed Nd: YAG laser is studied experimentally. The phase-conjugate lens retroreflected beam is fed into the YAG amplification stage and amplified by the amplifier stage. Polarizing plate coupled out of the laser beam with high quality, adjustable pulse width, far-field divergence angle close to 1 times the diffraction limit. At the same time, the divergence angle of the far field and the stability of the output energy vary with the pumping energy and the distance between the two cells. By choosing the best pumping energy, the far field divergence angle and the overall output energy fluctuation of the laser can be controlled at 5% Within.