Power scalability and frequency agility of compact terahertz source based on frequency mixing from solid-state lasers

We investigate power scalability and frequency agility of a terahertz (THz) source by mixing two frequencies generated by solid-state lasers in a nonlinear crystal. They are made possible by introducing two solid-state laser crystals sharing the same Q switch and output coupler with the same laser b...

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Bibliographic Details
Published in:Applied physics letters 2011-03, Vol.98 (13), p.131106-131106-3
Main Authors: Zhao, Pu, Ragam, Srinivasa, Ding, Yujie J., Zotova, Ioulia B.
Format: Article
Language:English
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Summary:We investigate power scalability and frequency agility of a terahertz (THz) source by mixing two frequencies generated by solid-state lasers in a nonlinear crystal. They are made possible by introducing two solid-state laser crystals sharing the same Q switch and output coupler with the same laser beams decoupled to each other by a polarizer. Following the optimization, we have improved the THz output power nearly fivefold at 1.64 THz. By replacing one of the neodymium-doped lithium yttrium fluoride crystals with a neodymium-doped yttrium aluminum garnet crystal, we have produced 2.1   μ W at 2.98 THz.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3572337