Enhanced Terahertz Bandwidth and Power from GaAsBi‐based Sources

Terahertz photoconductive (PC) switches are popular for THz wave generation. Unlike nonlinear crystals, they don't require high optical excitation power and precise phase matching, but their output THz power is limited. Here, the conventional substrate is replaced with enhanced GaAsBi (growth recipe included) and its performance is compared to that of a LT-GaAs PC switch and a nanoplasmonic PC switch. The results show a 0.5 THz increase in bandwidth and 4-fold improvement in emission power for GaAsBi and GaAsBi nanoplasmonic PC switches, respectively As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.