Zhanyi Wang, Jingli Gong, Jian-Jun He, Lu Li, Rui Q. Yang, James A. Gupta
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引用次数: 0
摘要
我们报告了对采用不同波导结构和耦合器尺寸、在 3-μm 波长范围内发射的 V 型耦合腔带间级联(IC)激光器(ICL)的研究。采用双脊波导的 II 型 ICL 器件显示出超过 153 nm 的宽调谐范围。采用深蚀刻波导的 I 型 ICL 器件实现了单模发射,在 250 K 的相对高温下波长可调超过 100 nm。通过比较不同尺寸和配置的所有器件的性能,证明了 V 型耦合腔激光器(VCCL)设计对结构参数变化的良好耐受性,验证了 VCCL 在实现单模发射和宽可调谐性方面的优势。
Widely tunable single-mode interband cascade lasers based on V-coupled cavities and dependence on design parameters
We report an investigation of V-coupled cavity interband cascade (IC) lasers (ICLs) emitting in the 3-μm wavelength range, employing various waveguide structures and coupler sizes. Type-II ICL devices with double-ridge waveguides exhibited wide tuning ranges exceeding 153 nm. Type-I ICL devices with deep-etched waveguides achieved single-mode emission with wavelength tunable over 100 nm at relatively high temperatures up to 250 K. All devices exhibited a side-mode suppression ratio higher than 30 dB. By comparing the performance of all devices with different sizes and configurations, a good tolerance against the structural parameter variations of the V-coupled cavity laser (VCCL) design is demonstrated, validating the advantages of the VCCL to achieve single-mode emission with wide tunability.