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近年来半导体激光器常被用来作为固体激光器的泵浦光源，本文提出了一种简单有效的双光路光谱扫描技术，它可以实时地使半导体激光器的发射光谱与激活媒质的吸收峰相吻合，以提高泵浦效率．本文还从理论上论证了这种方法的可行性．另外，由于半导体激光器的发射光谱的带宽比较宽，用这种方法测得的激活媒质的吸收曲线的峰宽（δλ）１大于它的实际带宽δλ．（δλ）１、δλ和半导体激光器发射光谱的带宽ｄλ之间满足勾股定理
In recent years, semiconductor lasers are often used as the pump light source for solid-state lasers. In this paper, a simple and effective dual-optical spectrum scanning technique is proposed, which can match the emission spectrum of semiconductor lasers with the absorption peak of active medium in real time. Increase pump efficiency. This article also theoretically demonstrates the feasibility of this method. In addition, since the width of the emission spectrum of the semiconductor laser is relatively wide, the peak width (δλ) 1 of the absorption curve of the activating medium measured by this method is larger than its actual bandwidth δλ. (Δλ) 1, δλ and the semiconductor laser emission spectrum bandwidth dλ satisfy the Pythagorean theorem