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Terahertz generation by optical rectification of femtosecond laser pulses propagating in a 40-μm thick LiNbO 3 layer attached to an output Si prism has been experimentally investigated for different laser… Click to show full abstract
Terahertz generation by optical rectification of femtosecond laser pulses propagating in a 40-μm thick LiNbO 3 layer attached to an output Si prism has been experimentally investigated for different laser wavelengths from 800 to 2100 nm. For longer wavelengths, the saturation of the optical-to-terahertz conversion efficiency has been observed at higher laser pulse energies, thus enabling higher efficiencies. In particular, record high conversion efficiency of 1.3% has been achieved with 30-μJ laser pulse energy at 2100 nm.
Journal Title: Optics express
Year Published: 2019
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