Femtosecond spectral pulse shaping with holographic gratings recorded in photopolymerizable glasses

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TypeArticle
Journal titleOptics Express
ISSN1094-4087
Volume19
Issue2
Pages15161527; # of pages: 12
SubjectDiffracted beams; Femtoseconds; Fluence thresholds; Grating design; Laser induce damage threshold; Laser-induced damage; Nonlinear effect; Pulse reshaping; Repetition rate; Second harmonics; Spectral bandwidth; Spectral pulse shaping; Theoretical models; Ti:sapphire laser systems; Ultra-short laser pulse; Volume phase holographic gratings; Bandwidth; Glass; Holographic gratings; Pulse generators; Spectrum analyzers; Ultrashort pulses; Glass lasers; glass; article; chemistry; computer aided design; equipment; equipment design; holography; instrumentation; laser; light; radiation exposure; refractometry; Computer-Aided Design; Equipment Design; Equipment Failure Analysis; Glass; Holography; Lasers; Light; Refractometry
AbstractThe majority of the applications of ultrashort laser pulses require a control of its spectral bandwidth. In this paper we show the capability of volume phase holographic gratings recorded in photopolymerizable glasses for spectral pulse reshaping of ultrashort laser pulses originated in an Amplified Ti: Sapphire laser system and its second harmonic. Gratings with high laser induce damage threshold (LIDT) allowing wide spectral bandwidth operability satisfy these demands. We have performed LIDT testing in the photopolymerizable glass showing that the sample remains unaltered after more than 10 million pulses with 0,75 TW/cm2 at 1 KHz repetition rate. Furthermore, it has been developed a theoretical model, as an extension of the Kogelnik's theory, providing key gratings design for bandwidth operability. The main features of the diffracted beams are in agreement with the model, showing that non-linear effects are negligible in this material up to the fluence threshold for laser induced damage. The high versatility of the grating design along with the excellent LIDT indicates that this material is a promising candidate for ultrashort laser pulses manipulations. © 2010 Optical Society of America.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Microstructural Sciences
Peer reviewedYes
NPARC number21271353
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Record identifier72db5cfb-f129-4196-b42a-39be887428dc
Record created2014-03-24
Record modified2016-05-09
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