【摘要】 研究了半导体激光器的外腔长连续调频特性。在外腔长λ／２变化范围内，激光频率与外腔长度呈线性变化关系，线性连续调频宽度小于外腔纵模频率间隔．外腔长调频率与激光管本征频率成正比，与外腔长度成反比．实验测量结果与理论分析相一致。更多还原

【Abstract】 Properties of continuous frequency modulation of semiconductor laser by varying the length of external cavity were researched. The laser frequency shifts linearly with variation of the length of external cavity when the variation is within the region ofλ/2. The amplitude of linearly modulated frequency is less than the frequency separation of longitudinal mode of the external cavity. The ratio of the shift of laser frequency to the variation of the length of external cavity is directly proportional to the intrinsic frequency of the laser diode,and inversely proportional to the length of external cavity. Experimental results were consistent with the theoretical analysis.更多还原