What question did this study set out to answer?

To evaluate and compare the terahertz emission properties and power saturation behavior of various photoconductive antenna geometries fabricated on LT-GaAs and SI-GaAs substrates.

October 20, 1997Applied Optics

Emission characteristics of photoconductive antennas based on low-temperature-grown GaAs and semi-insulating GaAs

View Full Paper

Ask AI

Bookmark

Authors

MTMasahiko TaniUniversity of Fukui SMShuji MatsuuraKwansei Gakuin University KSKiyomi SakaiUniversity of Fukui

Discussion

Member takes

Implication

Experimental study demonstrates higher pump-power saturation in SI-GaAs than LT-GaAs photoconductive antennas, indicating field screening limits terahertz emission.

Key Points

To evaluate and compare the terahertz emission properties and power saturation behavior of various photoconductive antenna geometries fabricated on LT-GaAs and SI-GaAs substrates.
Fabricated multiple antenna configurations (three dipoles, a bow tie, and a coplanar strip line) on both LT-GaAs and SI-GaAs substrates.
Characterized emission spectra using photoconductive sampling and measured relative total radiation power using a bolometer under varying optical pump intensities.
Radiation spectra between LT-GaAs and SI-GaAs antennas of identical geometry exhibited no observable spectral differences.
Emission power saturated at elevated optical pump intensities, with power saturation occurring more severely in SI-GaAs-based antennas than in LT-GaAs-based antennas due to photocarrier field screening.

Cite This Study

Tani et al. (1997) studied this question.

synapsesocial.com/papers/6a8351969afa9c8d94b485a8 https://doi.org/10.1364/ao.36.007853

View Full Paper

Ask AI

Bookmark

Implication

Experimental study demonstrates higher pump-power saturation in SI-GaAs than LT-GaAs photoconductive antennas, indicating field screening limits terahertz emission.

Emission characteristics of photoconductive antennas based on low-temperature-grown GaAs and semi-insulating GaAs

Discussion

Member takes

Implication

Key Points

Cite This Study

Emission characteristics of photoconductive antennas based on low-temperature-grown GaAs and semi-insulating GaAs

Discussion

Member takes

Implication

Key Points

Cite This Study

Also Consider

Also Consider