通过对半导体激光阵列进行光谱组束, 使阵列中各个发光单元的光束重叠, 同时锁定在不同的波长上; 将组束后的光束进行频率变换, 组束的各个光束同时满足非线性频率变换中的和频条件, 产生和频的蓝光输出。光谱组束半导体激光阵列增加了参与非线性频率变换半导体激光发光单元的个数, 有利于提高整体频率变换的输出功率。实验采用标准的半导体激光阵列, 组束后连续输出功率为18.2 W, 非线性频率变换产生的蓝光的输出功率为93 mW, 光光转换效率约为0.51%。实验证明了光谱组束半导体激光阵列多谱线频率变换的可行性。

The beams of each emitter in the diode laser array are overlapped by spectral beam combination. Each emitter is locked at different wavelengths. Frequency conversion of the combined beam is conducted. When the beams from each emitter satisfy the nonlinear frequency conversion conditions, sum frequency generation of blue light can be obtained. The spectral combined diode laser array can increase the number of lasers participating in the nonlinear frequency conversion, and enhance the whole output power. In the experiment, a standard diode laser array is used. The output power of the spectral combined array is 18.2 W. The output power of the blue light is 93 mW, and the optical-optical conversion efficiency is about 0.51%. The feasibility of the multispectral frequency conversion of the spectral combined diode laser array is proved by the experiment.