DAST crystal based terahertz generation and recording of time resolved photoacoustic spectra of N

dc.contributor.author Rao, K. S.
dc.contributor.author Chaudhary, A. K.
dc.contributor.author Venkatesh, M.
dc.contributor.author Thirupugalmani, K.
dc.contributor.author Brahadeeswaran, S.
dc.date.accessioned 2022-03-26T14:46:11Z
dc.date.available 2022-03-26T14:46:11Z
dc.date.issued 2016-07-01
dc.description.abstract We report the THz generation using optical rectification process in an indigenously grown organic salt 4-N, N-dimethylamino-4′-N′-methyl-stilbazoliumtoyslate (DAST). A 60 fs, 1 kHz optical parametric amplifier, tunable between 0.8 and 1.6 μm range was employed to generate THz radiation. It is observed that the THz signal is accompanied with weak second harmonic signal of pump wavelength. The conversion efficiency (η) of generated THz is 0.0161%. The radiation generated from DAST crystal is only THz signal, which is confirmed theoretically by choosing the crystal thickness is equivalent to be its optimum coherence length. In addition, we have selected two rotational lines i.e. J = 19, 58 of pure N2O gas by using 0.5 and 1.5 THz band pass filters for recording the time resolved photoacoustic (PA) spectra at 1 atm pressure for the first time.
dc.identifier.citation Current Applied Physics. v.16(7)
dc.identifier.issn 15671739
dc.identifier.uri 10.1016/j.cap.2016.04.009
dc.identifier.uri https://www.sciencedirect.com/science/article/abs/pii/S1567173916300840
dc.identifier.uri https://dspace.uohyd.ac.in/handle/1/2252
dc.subject Band pass filters
dc.subject DAST
dc.subject N O 2
dc.subject PA spectra
dc.subject THz
dc.title DAST crystal based terahertz generation and recording of time resolved photoacoustic spectra of N
dc.type Journal. Article
dspace.entity.type
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