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全固体1.3μm增益开关激光器的研究

, PP. 292-297

Keywords: 激光技术,增益开关,速率方程,脉冲激光器,全固体激光器

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Abstract:

增益开关和Q开关是获得脉冲激光运转的常用方法,对于在非线性光学研究、光通讯第二窗口装置检测、光纤传感等方面有着广泛应用前景的1.3μm波段全固体激光的脉冲产生,提出了使用增益开关的方法。首先在理论上使用速率方程对增益开关的运转进行分析,并就腔长对脉冲参数的影响进行了数值模拟。接着在实验上采用高频调制激光二极管供电电源的方法,使NdYVO4激光器工作在增益开关状态,即通过逐渐减小工作电源泵浦电流的脉冲宽度,使激光仅输出弛豫振荡的第一个脉冲,最后在泵浦电流脉冲宽度为5μs时,获得了平均功率80mW,光脉冲宽度200ns,频率200kHz,峰值功率2W,单脉冲能量0.4μJ的1.342μm激光的增益开关运转。

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