Abstract
We report a technique for line-narrowing terahertz radiation produced through parametric generation. By incorporating an etalon within the idler-wave cavity of the parametric oscillator, radiation is generated with a linewidth of 1 GHz (freerunning linewidth 50-100 GHz) and with a center frequency continuously tunable over a band >50 GHz, settable anywhere within the coarse tuning range of the device (1-3 THz). When implemented within an intracavity cavity geometry, pulses of terahertz radiation of duration ∼10 ns and energy ∼30 nJ are generated at repetition rates up to 400 Hz (implying mean powers of >10 μW and peak powers of ∼3 W) in a compact device.
Original language | English |
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Article number | 141105 |
Pages (from-to) | 141105-1-141105-3 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 92 |
Issue number | 14 |
DOIs | |
Publication status | Published - 2008 |