Mechanism of molecular orientation by single-cycle pulses
نویسندگان
چکیده
منابع مشابه
Molecular orientation and alignment by intense single-cycle THz pulses.
Intense single-cycle THz pulses resonantly interacting with molecular rotations are shown to induce field-free orientation and alignment under ambient conditions. We calculate and measure the degree of both orientation and alignment induced by the THz field in an OCS gas sample, and correlate between the two observables. The data presents the first observation of THz-induced molecular alignment...
متن کاملSpatiotemporal focusing of single-cycle light pulses
We investigate experimentally and numerically the properties of single-cycle terahertz pulses propagating through a focus. The experimental data clearly show changes in pulse shape resulting from the Gouy phase shift and apparent superluminal pulse propagation. The pulses are also considerably distorted by diffraction effects. A solution of the time-domain diffraction integral is necessary to e...
متن کاملRaman technique for single-cycle pulses
We show that two Raman generators which have different Raman transition frequencies and are used in series result in a multiplicative increase in the total number of generated sidebands. When phase-corrected, these sidebands synthesize to a train of randomly timed single-cycle pulses. For series generators on the rotational transitions of molecular D2 (J50→2) and H2 (J51→3), each with 40 modes,...
متن کاملGeneration of High Efficient Quasi-Single-Cycle 3 and 6THZ Pulses using Multilayer Structures OH1/SiO2 and DSTMS/SiO2
We propose that high efficient terahertz (THz) multilayer structures are composed of DSTMS/SiO2 and OH1/SiO2 at 3 and 6THz frequencies. We show that the efficiencies of these structures are higher than DAST/SiO2 structure in both of 3 and 6THz frequencies. OH1/SiO2 structure at 6THz has an efficiency as large as 10-1; at 3THz frequency, DSTMS/SiO2 structure has an efficiency as large as 10-...
متن کاملResponse of grating pairs to single-cycle electromagnetic pulses
The chirp of single-cycle microwave fields after interaction with pairs of parallel diffraction gratings is measured in a phase-sensitive terahertz spectrometer. Novel transmission grating pairs recently proposed by Tournois, which combine diffraction and refraction effects, yield an almost linear group delay over a bandwidth that exceeds that of conventional reflection gratings by a factor of ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Chemical Physics
سال: 2012
ISSN: 0021-9606,1089-7690
DOI: 10.1063/1.4736844