Simultaneous emission of the HF and N2 lines from a plasma cathode tea laser

Serafetinides, AA; Tsikrikas, GN; Papayannis, AD; Atanasov, PA

dc.contributor.author	Serafetinides, AA	en
dc.contributor.author	Tsikrikas, GN	en
dc.contributor.author	Papayannis, AD	en
dc.contributor.author	Atanasov, PA	en
dc.date.accessioned	2014-03-01T01:13:24Z
dc.date.available	2014-03-01T01:13:24Z
dc.date.issued	1997	en
dc.identifier.issn	0018-9197	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12445
dc.subject	Gas lasers	en
dc.subject	HF laser	en
dc.subject	N2 laser	en
dc.subject	Pulsed lasers	en
dc.subject	Ultraviolet generation	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Physics, Applied	en
dc.subject.other	SLIDING-DISCHARGE	en
dc.subject.other	NITROGEN LASER	en
dc.subject.other	PERFORMANCE	en
dc.subject.other	CIRCUITS	en
dc.subject.other	EXCITATION	en
dc.subject.other	ABLATION	en
dc.title	Simultaneous emission of the HF and N2 lines from a plasma cathode tea laser	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/3.644097	en
heal.identifier.secondary	http://dx.doi.org/10.1109/3.644097	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	Simultaneous laser action from HF and N2 is obtained, from a plasma cathode TEA laser, for the first time. The sliding discharge along the surface of a dielectric is used as a plasma cathode, for the main volumetric discharge. The laser operates at atmospheric pressure, with a gas mixture of SF6:C3H8:N2He. For a typical flow rate ratio of 0.27:0.024:0.2:19.8 lmin-1, it produces simultaneously 160 mJ HF and 0.6 mJ N2 laser outputs at 0.43% and 1.4×10-3% efficiencies respectively, at the moderate charging voltage of 28.5 kV. These output characteristics are obtained from a small active discharge volume and length of 106 cm3 and 38 cm respectively. These values extend the performance, recently reported in the literature, of a sliding discharge HF/N2laser with corresponding simultaneous energy outputs of 12 mJ HF and 1.1 mJ N2 , to a higher energy output level, thus making the device suitable for a broader range of applications. This novel dual wavelength HF/N2 laser system presented, can be particularly convenient for medical experiments, where the IR beam can be used for tissue ablation, while the UV beam can be used as the excitation source for fluorescence spectroscopic measurements, for the evaluation of the ablation process. Details are presented on the dependence of the laser performance parameters, such as output energy, discharge voltage and current and structure of the laser output pulses on the mixture composition and the circuit parameters. © 1997 IEEE.	en
heal.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
heal.journalName	IEEE Journal of Quantum Electronics	en
dc.identifier.doi	10.1109/3.644097	en
dc.identifier.isi	ISI:A1997YG98900005	en
dc.identifier.volume	33	en
dc.identifier.issue	12	en
dc.identifier.spage	2167	en
dc.identifier.epage	2172	en