Towards quantum-cascade VECSELs for terahertz heterodyne local oscillators

Christopher A. Curwen; Anthony D. Kim; Yu Wu; Yue Shen; Darren J. Hayton; Jonathan H. Kawamura; Boris S. Karasik; Sadhvikas Addamane; John L. Reno; Benjamin S. Williams

doi:10.1117/12.2615672

1 April 2022 Towards quantum-cascade VECSELs for terahertz heterodyne local oscillators

Christopher A. Curwen, Anthony D. Kim, Yu Wu, Yue Shen, Darren J. Hayton, Jonathan H. Kawamura, Boris S. Karasik, Sadhvikas Addamane, John L. Reno, Benjamin S. Williams

Author Affiliations +

Proceedings Volume PC11984, Vertical External Cavity Surface Emitting Lasers (VECSELs) XI; PC1198402 (2022) https://doi.org/10.1117/12.2615672
Event: SPIE LASE, 2022, San Francisco, California, United States

Abstract

We report advances in the development of THz quantum-cascade metasurface VECSELs intended for use as local oscillators in terahertz heterodyne receiver instruments for astrophysical investigation of the interstellar medium. First, by using a patch-based amplifying metasurface we obtain QC-VECSEL lasing with milliwatt output power at 4.6 THz with reduced power consumption less than 1 W. Second, we report the phase locking of a QC-VECSEL at 3.4 THz to a microwave reference using a Schottky diode mixer. Finally, we report efforts and challenges to scale down the lasing frequency of the VECSELs to 1.9 THz.

Conference Presentation

Citation Download Citation

Christopher A. Curwen, Anthony D. Kim, Yu Wu, Yue Shen, Darren J. Hayton, Jonathan H. Kawamura, Boris S. Karasik, Sadhvikas Addamane, John L. Reno, and Benjamin S. Williams "Towards quantum-cascade VECSELs for terahertz heterodyne local oscillators", Proc. SPIE PC11984, Vertical External Cavity Surface Emitting Lasers (VECSELs) XI, PC1198402 (1 April 2022); https://doi.org/10.1117/12.2615672

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