Evaluation and analysis of operating characteristics for mid-infrared surface-emitting quantum cascade lasers

S. Saito; R. Hashimoto; K. Kaneko; T. Kakuno; Y. Yao; N. Ikeda; Y. Sugimoto; T. Kuroda; H. Tanimura; S. Takagi; K. Sakoda

doi:10.1117/12.2607746

3 March 2022 Evaluation and analysis of operating characteristics for mid-infrared surface-emitting quantum cascade lasers

S. Saito, R. Hashimoto, K. Kaneko, T. Kakuno, Y. Yao, N. Ikeda, Y. Sugimoto, T. Kuroda, H. Tanimura, S. Takagi, K. Sakoda

Author Affiliations +

Proceedings Volume 12021, Novel In-Plane Semiconductor Lasers XXI; 120210C (2022) https://doi.org/10.1117/12.2607746
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

Surface emission lasing in pulse operation was realized with a quantum cascade laser using a two-dimensional photonic crystal at a wavelength of about 4 µm. The quantum well of the light-emitting layer was a strain-compensated system, and crystal growth was achieved while maintaining the strain balance. PC-QCLs lasing were realized on the single-mode vertical-emission at 77K under pulse operation. The threshold current density is 760 A/cm2 . The far-field radiation pattern showed a very small divergence angle of less than 1°. In addition, we observed the polarization dependence of the far-field profile, and analyzed for operating characteristics

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S. Saito, R. Hashimoto, K. Kaneko, T. Kakuno, Y. Yao, N. Ikeda, Y. Sugimoto, T. Kuroda, H. Tanimura, S. Takagi, and K. Sakoda "Evaluation and analysis of operating characteristics for mid-infrared surface-emitting quantum cascade lasers", Proc. SPIE 12021, Novel In-Plane Semiconductor Lasers XXI, 120210C (3 March 2022); https://doi.org/10.1117/12.2607746

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