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介绍了一种高功率Nd:YAG绿光激光器实验装置,采用非垂直入射式漫反聚光腔,解决了高泵浦功率密度下增益分布均匀性问题,采用双泵浦头串联的对称直通谐振腔结构,在LD泵浦功率1400W时,获得了400W基频输出,采用Ⅰ类温度匹配方式LBO晶体内腔倍频,在声光Q开关重复频率10kHz条件下,获得了平均功率达230W的532nm绿光激光输出,脉冲宽度小于56ns,光-光转换效率16.8%,光束质量约30mm·mrad。该激光器结构简单,可靠性好,适合于工程应用。
A high-power Nd: YAG green laser experimental device is introduced. The problem of gain distribution uniformity at high pump power density is solved by a non-vertical incidence diffuse antireflection condenser cavity. A symmetrical direct resonance Cavity structure, at the LD pump power of 1400W, obtained the 400W baseband output, using class I temperature matching LBO crystal cavity frequency multiplier, the acousto-optic Q switch repetition frequency of 10kHz conditions, the average power of 230W 532nm Green laser output, pulse width less than 56ns, light - light conversion efficiency of 16.8%, the beam quality of about 30mm · mrad. The laser structure is simple, good reliability, suitable for engineering applications.