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对折叠腔内倍频激光器基频与谐波的相对相位对倍频光输出功率的影响进行了理论分析 ,并在实验上采用全固体化 L D泵浦 Nd:YVO4 +KTP折叠腔内腔倍频激光器 ,利用光楔的色散作用调节腔内基频与谐波的相对相位 ,得到了倍频光输出随基频与谐波相对相位呈余弦函数平方的变化 ,验证了理论结果 ,为消除大功率激光器中相对相位的影响 ,提高输出功率提供了一种简单实用的方法 .
The influence of the relative phase of the fundamental frequency and the harmonic of the frequency doubled laser in the folded cavity on the output power of the frequency doubling light is theoretically analyzed. In the experiment, an all-solidified LD-pumped double-frequency Nd: YVO4 + KTP folded cavity Laser, the use of optical wedge chromatic dispersion effect to adjust the cavity fundamental frequency and the relative phase of the harmonic, the frequency doubling light output with the fundamental frequency and the relative phase of the harmonic phase shifted by the square of the cosine function to verify the theoretical results, to eliminate high power The influence of the relative phase in the laser and the increase of output power provide a simple and practical method.