Figure 2 | Scientific Reports

Figure 2

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

Figure 2

Broadband Terahertz radiation produced in HMQ-TMS retrieved by field autocorrelation.

The emission is obtained by optical rectification of 65 fs FWHM laser at 1500 nm central wavelength. The spectrum extends over more than 7 octaves (0.1–15 THz) and fills the previously inaccessible THz gap (0.1–15 THz) at high spectral intensity. The spectral width appears to be limited mainly by the pump pulse duration. The phonon resonances in the HMQ-TMS are responsible for the absorption lines visible in the spectrum.

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