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TitleRefractive index-modified structures in glass written by 266nm fs laser pulses.
Publication TypeJournal Article
Year of Publication2012
AuthorsSaliminia, Ali, Jean-Philippe Bérubé, and Réal Vallée
JournalOpt Express
Date Published2012 Dec 3
KeywordsEquipment Design, Fluorides, Germanium, Glass, Lasers, Lenses, Quartz, Refractometry, Silicon Dioxide, Ultraviolet Rays

We demonstrate the inscription of embedded waveguides, anti-waveguides and Bragg gratings by use of intense femtosecond (fs) UV laser pulses at 266nm in pure fused silica, and for the first time, in bulk fused quartz and ZBLAN glasses. The magnitude of induced index changes, depends, besides pulse energy and translation speed, largely on writing depth and varies from ~10(-4) for smooth modifications to ~10(-3) for damaged structures. The obtained results are promising as they present the feasibility of fabrication of short (< 0.2μm) period first-order fiber Bragg gratings (FBGs) for applications such as in realization of all-fiber lasers operating at short wavelengths.

Alternate JournalOpt Express
PubMed ID23262691