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A compact continuous-wave (CW) terahertz source is demonstrated using a single two-colour laser diode and a photomixer. The 350 mum-long Fabry-Perot laser is constrained to oscillate on non-adjacent cavity modes, at a frequency separation of 485 GHz, by the introduction of features along its ridge waveguide. At a drive current of 155 mA, more than 10 mW of CW power is delivered into a standard singlemode...
A two-color Fabry-Perot laser is designed with a distribution of slots in the ridge waveguide, fabricated and characterised. The two-color lasing produces a strong four wave mixing signal, and is promising for direct THz emission.
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