Investigation of the spatial profile of stimulated Raman scattering beams in D2 and H2 gases using a pulsed ND: YAG laser at 266 nm

Tzortzakis, S; Tsaknakis, G; Papayannis, A; Serafetinides, AA

dc.contributor.author	Tzortzakis, S	en
dc.contributor.author	Tsaknakis, G	en
dc.contributor.author	Papayannis, A	en
dc.contributor.author	Serafetinides, AA	en
dc.date.accessioned	2014-03-01T01:20:41Z
dc.date.available	2014-03-01T01:20:41Z
dc.date.issued	2004	en
dc.identifier.issn	0946-2171	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16009
dc.subject	Conversion Efficiency	en
dc.subject	High Pressure	en
dc.subject	Index of Refraction	en
dc.subject	Stimulated Raman Scattering	en
dc.subject	Yag Laser	en
dc.subject.classification	Optics	en
dc.subject.classification	Physics, Applied	en
dc.subject.other	Absorption spectroscopy	en
dc.subject.other	Deuterium	en
dc.subject.other	Hydrogen	en
dc.subject.other	Mathematical models	en
dc.subject.other	Mirrors	en
dc.subject.other	Neodymium lasers	en
dc.subject.other	Optical radar	en
dc.subject.other	Pumping (laser)	en
dc.subject.other	Remote sensing	en
dc.subject.other	Raman cells	en
dc.subject.other	Spatial distribution	en
dc.subject.other	Stimulated Raman scattering (SRS)	en
dc.subject.other	Synchrotron beam lines	en
dc.subject.other	Raman scattering	en
dc.title	Investigation of the spatial profile of stimulated Raman scattering beams in D2 and H2 gases using a pulsed ND: YAG laser at 266 nm	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s00340-004-1508-4	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s00340-004-1508-4	en
heal.language	English	en
heal.publicationDate	2004	en
heal.abstract	The stimulated Raman scattering (SRS) beam spatial mode structure is studied in H-2 and D-2 gases, in a 60 cm-long high-pressure Raman cell, using a pulsed Nd:YAG laser at 266 nm. The conversion efficiencies of the first and second Stokes in H-2, D-2 and H-2/D-2 mixtures have been measured precisely in the 1-14 atm range. The SRS beam profiles were recorded for different gas pressures in the high-pressure Raman cell and interesting behaviour is revealed. Homogeneous SRS spatial profiles were obtained only for pressures higher than 7 atm. For lower pressures the profiles are either in the form of a ring or of a more complicated shape. The results are explained in terms of nonlinear self-focusing processes during the pump beam propagation in the Raman cell. Also, from our measurements, a more precise value of the nonlinear index of refraction for the H-2 and D-2 at 266 nm is proposed.	en
heal.publisher	SPRINGER-VERLAG	en
heal.journalName	Applied Physics B: Lasers and Optics	en
dc.identifier.doi	10.1007/s00340-004-1508-4	en
dc.identifier.isi	ISI:000221675500013	en
dc.identifier.volume	79	en
dc.identifier.issue	1	en
dc.identifier.spage	71	en
dc.identifier.epage	75	en