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Manipulation of short pulses

dc.contributor.advisorRohwer, Erich G.en_ZA
dc.contributor.advisorSchwoerer, Heinrichen_ZA
dc.contributor.advisorNeethling, Pieter H.en_ZA
dc.contributor.authorOkoye, Raphaelen_ZA
dc.contributor.otherStellenbosch University. Faculty of Science. Dept. of Physics.en_ZA
dc.date.accessioned2013-05-15T14:51:42Zen_ZA
dc.date.accessioned2013-12-13T14:46:58Z
dc.date.available2013-05-15T14:51:42Zen_ZA
dc.date.available2013-12-13T14:46:58Z
dc.date.issued2013-12en_ZA
dc.identifier.urihttp://hdl.handle.net/10019.1/85576
dc.descriptionThesis (MSc)--Stellenbosch University, 2013.en_ZA
dc.description.abstractENGLISH ABSTRACT: An ultra-fast laser pulse can be described in the time or frequency domain. If the timebandwidth product of an ultra-fast pulse is not satisfied, then the pulse is stretched. Stretching can be described in the time or frequency domain. In the time domain, it is called a chirp and in the frequency domain, it is known as the group delay dispersion GDD. Various techniques can be used to stretch and compress laser pulses. In this project, a prism pulse compressor used for compressing stretched pulses was built. A 200nm supercontinnum generated in an all normal dispersion photonic crystal fibre (ANDi-PCF) was compressed using the prism pulse compressor from 2ps to 140fs. The experiment and physical interpretation presented in this project suggest that a shorter pulse duration less than the measured 140fs of the compressed supercontinnum can be obtained.en_ZA
dc.description.abstractAFRIKAANSE OPSOMMING: 'n Ultra-vinnige laser puls kan beskryf word in tyd of frekwensie. As die tyd-bandwydte produk van ‘n ultra-vinnige puls nie bevredig is nie, dan is die puls uitgerek. Hierdie uitrekking kan beskryf word in tyd of frekwensie. In tyd word dit tjirp genoem en in frekwensie groep vertraging dispersie. Verskeie tegnieke kan gebruik word om ‘n laser puls te rek of saam te pers. In hierdie projek is ‘n prisma puls kompressor gebou om uitgerekte pulse saam te pers. ‘n 200nm bre e bandwydte puls (“supercontinuum”) is gegenereer in ‘n fotoniese kristal optiese vesel wat uitsluitlik normale dispersie toon (ANDI-PCF) en die puls is toe saamgepers met behulp van die prisma puls kompressor van‘n oorspronklike 2ps na 140fs. Die eksperiment en fisiese interpretasie wat in hierdie projek aangebied word dui daarop dat ‘n nog korter puls, minder as die gemete 140 fs, verkry kan word deur die bre e bandwydte puls verder saam te pers.af_ZA
dc.format.extentix, 83 p. : ill.
dc.language.isoen_ZAen_ZA
dc.publisherStellenbosch : Stellenbosch Universityen_ZA
dc.subjectGroup delay dispersionen_ZA
dc.subjectFemtosecond lasersen_ZA
dc.subjectLaser pulses, Ultrashorten_ZA
dc.subjectDissertations -- Physicsen_ZA
dc.subjectTheses -- Physicsen_ZA
dc.titleManipulation of short pulsesen_ZA
dc.typeThesisen_ZA
dc.rights.holderStellenbosch University


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