Generation of high power tunable multicycle teraherz pulses
Author(s)
Chen, Zhao; Zhou, Xibin; Werley, Christopher Alan; Nelson, Keith Adam
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We demonstrate generation of high-power, multicycle, and frequency-tunable terahertz pulses with microjoule energies by tilting the intensity front of a quasi-sinusoidal intensity-modulated optical waveform. The spatiotemporally shaped waveform undergoes difference-frequency mixing in lithium niobate,generating a THz phonon-polariton wave whose electromagnetic component is coupled out to free space. The narrowband THz spectrum is tunable between 0.3–1.3 THz, with adjustable bandwidths generally less than 0.1 THz. At 10 Hz and 1 kHz repetition rates, 10 μJ and 1 μJ THz pulse energies are achieved, respectively, over a broad frequency range.
Date issued
2011-08Department
Massachusetts Institute of Technology. Department of ChemistryJournal
Applied Physics Letters
Publisher
American Institute of Physics
Citation
Chen, Zhao, Xibin Zhou, Christopher A. Werley, and Keith A. Nelson. “Generation of high power tunable multicycle teraherz pulses.” Applied Physics Letters 99, no. 7 (2011): 071102.© 2011 American Institute of Physics.
Version: Final published version
ISSN
00036951