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High efficiency generation of THz from 1550-nm: exceeding the Manley-Rowe limit with photoconductive emitters

Published

Author(s)

A Feldman, Todd E. Harvey, Richard Mirin, A. Mingardi, W-D. Zhang, E. R. Brown

Abstract

Two photoconductive emitters - one with a self-complementary square spiral antenna, and the other with a resonant slot antenna - were fabricated on a GaAs epilayer embedded with ErAs quantum dots. Driven with 1550 nm fiber mode-locked lasers, 117 υW broadband THz power was generated from the device with the spiral antenna, and 2 υW from the device with resonant slot antenna. The optical-to-THz conversion is through extrinsic photoconductivity, which can and does surpass the Manley-Rowe limit.
Citation
Optics Express
Volume
26
Issue
14472

Keywords

photoconductive emitters, extrinsic photoconductivity, Manley-Rowe limit

Citation

Feldman, A. , Harvey, T. , Mirin, R. , Mingardi, A. , Zhang, W. and Brown, E. (2018), High efficiency generation of THz from 1550-nm: exceeding the Manley-Rowe limit with photoconductive emitters, Optics Express, [online], https://doi.org/10.1364/OE.26.014472, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=925580 (Accessed May 29, 2024)

Issues

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Created May 27, 2018, Updated October 12, 2021