Line-narrowed, compact, and coherent source of widely tunable terahertz radiation

D. J M Stothard; T. J. Edwards; D. Walsh; C. L. Thomson; C. F. Rae; M. H. Dunn; P. G. Browne

doi:10.1063/1.2907489

Line-narrowed, compact, and coherent source of widely tunable terahertz radiation

D. J M Stothard, T. J. Edwards, D. Walsh, C. L. Thomson, C. F. Rae, M. H. Dunn, P. G. Browne

Research output: Contribution to journal › Article › peer-review

48 Citations (Scopus)

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
Article number	141105
Pages (from-to)	141105-1-141105-3
Number of pages	3
Journal	Applied Physics Letters
Volume	92
Issue number	14
DOIs	https://doi.org/10.1063/1.2907489
Publication status	Published - 2008

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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.",

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AU - Stothard, D. J M

AU - Edwards, T. J.

AU - Walsh, D.

AU - Thomson, C. L.

AU - Rae, C. F.

AU - Dunn, M. H.

AU - Browne, P. G.

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AB - 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.

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Line-narrowed, compact, and coherent source of widely tunable terahertz radiation

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