Figure 7 | Scientific Reports

Figure 7

From: Intense, carrier frequency and bandwidth tunable quasi single-cycle pulses from an organic emitter covering the Terahertz frequency gap

Figure 7

THz pulse energy generated by optical rectification in a small-size HMQ-TMS when pumped at different wavelengths.

For direct comparison in all the measurements, the pump fluence is kept at 10 mJ/cm2. The results suggest a direct link between the THz energy and the optical rectification phase matching bandwidth. The THz yield increases significantly for pump wavelengths where the emitted spectrum is broader. Upscaling the THz energy is straightforward by employing larger or partitioned HMQ-TMS crystals and by using a stronger pump pulse.

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