Abstract
We report a THz radiation source based on the technique of non-collinear phasematched parametric generation. The source, which is compact and operable at room temperature, generates nanosecond pulses of peak power and energy greater than 1W and 5 nJ respectively. The radiation is continuously tunable over the range 1.2-3.05 THz and is of narrow spectral bandwidth (<100 GHz). The use of intersecting pump and parametric wave cavities results in threshold pump pulse energies below 1 mJ (from a Nd:YAG laser excited at 20 W, 500 μsec by a quasi-CW diodelaser) and close to 50% down-conversion efficiency when operated at twice threshold.
Original language | English |
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Pages (from-to) | 1582-1589 |
Number of pages | 8 |
Journal | Optics Express |
Volume | 14 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2006 |