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基于种子注入技术、干涉法腔模锁定方案以及自滤波非稳腔技术,设计并研制出一套单纵单横电光调Q脉冲激光器系统。该系统输出的基波(波长1064nm)能量达到600mJ,倍频后绿光能量达到300mJ,发散角接近衍射极限,线宽接近傅里叶变换极限,在强气流强振动环境中单纵模的锁定概率为100%。实验观测了种子注入对巨脉冲建立时间、光斑模式以及能量的影响。该系统可应用于受激布里渊散射(SBS)、大视场风洞全息以及光学合成孔径等研究领域。
Based on the seed injection technique, the interference cavity mode locking scheme and the self-filtering unsteady cavity technique, a single vertical and single transverse Y-switched Q-pulse laser system was designed and developed. The output power of fundamental (wavelength 1064nm) is 600mJ and the energy of green is about 300mJ after doubling frequency. The divergence angle is close to the diffraction limit, the linewidth is close to the Fourier transform limit, and the locking of single longitudinal mode The probability is 100%. The effect of seed injection on the glitch establishment time, speckle pattern and energy was observed experimentally. The system can be applied to stimulated Brillouin scattering (SBS), large field of view wind tunnel holography and optical synthetic aperture and other fields.