期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 36, 期 8, 页码 953-957出版社
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/36/8/302
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High-power, wide-frequency-tunable terahertz waves were generated based on difference-frequency generation in GaP crystals with small-angle noncollinear phase matching. The tunable frequency range was as wide as 0.5-7 THz, and the peak power remained high, near 100 mW over most of the frequency region. The tuning properties were well described by the dispersion relationship for the phonon-polariton mode of GaP up to 6 THz. We measured the spectra of crystal polyethylene and crystal quartz with high resolution using this THz-wave source.
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