A frequency doubled erbium doped modelocked fiber frequency comb is used to implement a THz photomixing synthesizer. The useful THz linewidth is in order of 150 kHz and has been assessed along with… (More)
Continuous-wave terahertz spectroscopy by photomixing is applied to the analysis of mainstream cigarette smoke. Using the wide tunability of the source, spectral signatures of hydrogen cyanide (HCN),… (More)
The case of symmetric tops CH(3)X (X = Br, Cl, F, …) perturbed by non-polar diatoms Y(2) (Y = N(2), O(2), …) is analysed from the viewpoint of theoretical collisional broadening of their rotational… (More)
The room-temperature nitrogenand oxygen-broadening coefficients of hydrogen cyanide spectral lines have been measured in the 0.5–3 THz (17–100 cm ) frequency range (purely rotational transitions with… (More)
Following the first successful high-resolution study of the "perpendicular" band of dimethylsulfoxyde at 324 cm(-1), associated with the ν23 bending vibration, we discovered a sequence of fourfold… (More)
We give details of the spectroscopic observation of the gyroscopic destabilisation in the ν23 vibrational state of dimethylsulfoxide (DMSO) announced by Cuisset, Pirali, and Sadovskià [Phys. Rev.… (More)
CHFClI is among the more favorable molecules for parity violation (PV) measurements in molecules. Despite the fact that calculated PV effects are two orders of magnitude smaller than in some… (More)
Multipass cells have been extensively used in the infrared. Their use at THz frequencies is minimal due to the difficulty of coupling the highly divergent THz beams. The divergence of a cw-THz… (More)
The monitoring of gas-phase mononitrotoluenes is crucial for defence, civil security and environmental interests because they are used as taggant for TNT detection and in the manufacturing of… (More)
Continuous wave -terahertz spectroscopy by photomixing is applied to the analysis of mainstream cigarette smoke. The spectral signatures of hydrogen cyanide (HCN), carbon monoxide (CO), formaldehyde… (More)