Abstract

We report significant improvement in terahertz (THz) power and efficiency using photoconductive sources by use of a spatially extended line source excitation and the trap enhanced field effect that occurs in sources made on semi-insulating GaAs. The combination of high electric fields and reduced screening effects allows 10 μW of THz power to be generated with 14 mW of absorbed optical power, demonstrating nearly 0.1% optical-to-THz conversion efficiency.

© 2005 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Optimum excitation conditions for the generation of high-electric-field terahertz radiation from an oscillator-driven photoconductive device

André Dreyhaupt, Stephan Winnerl, Manfred Helm, and Thomas Dekorsy
Opt. Lett. 31(10) 1546-1548 (2006)

Impulsive terahertz radiation with high electric fields from an amplifier-driven large-area photoconductive antenna

M. Beck, H. Schäfer, G. Klatt, J. Demsar, S. Winnerl, M. Helm, and T. Dekorsy
Opt. Express 18(9) 9251-9257 (2010)

Study of photoexcited-carrier dynamics in GaAs photoconductive switches using dynamic terahertz emission microscopy

Hironaru Murakami, Shogo Fujiwara, Iwao Kawayama, and Masayoshi Tonouchi
Photon. Res. 4(3) A9-A15 (2016)

More Recommended Articles

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription