Relation between tuning characteristics and bistability characteristics of H parameter simplified model
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摘要: 为了研究光栅调谐外腔半导体激光器的调谐特性和双稳特性之间的关系,采用建立H参量简化模型、以载流子密度表征阈值特性的方法,得到了以H参量表达的调谐范围解析式,对反共振所需剩余反射率的上限进行了理论分析,数值模拟了激光出射端反射系数、剩余反射率对调谐范围和双稳环环宽的影响,得到了环宽最大值的位置。结果表明,H参量简化模型能够阐明光栅调谐外腔半导体激光器的调谐特性与双稳特性的关系。Abstract: In order to study the relation between tuning characteristics and bistability characteristics, after establishing H parameter simplified model and taking carrier density for the characteristic of threshold, an analytical expression for the tuning range was derived.Then the maximum residual reflectivity for anti-resonance was analyzed,the effect of reflectivity in laser output terminal and residual reflectivity on tuning range and hysteresis loop width was simulated, and the maximum hysteresis loop width was obtained.Based on the model,the relation between tuning and bistability characteristics can be clarified.
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Keywords:
- laser technique /
- H parameter simplified model /
- carrier density /
- tuning range /
- hysteresis loop
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