Direct femtosecond laser inscription of highly reflective and low loss mid-infrared fiber bragg gratings

Gayathri Bharathan, Toney Teddy Fernandez, Martin Ams, Robert I. Woodward, Darren D. Hudson, Alex Fuerbach

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

Mid-infrared (mid-IR) fiber lasers in the 2.5-5 μm wavelength range have great potential to play a pivotal role in spectroscopy and medicine [1]. However, at present the non-existence of fiber-coupled optical components for these wavelengths severely limits the ability to build highly efficient alignment-free, low loss all-fiber lasers. This relates to the fact that fabricating various in-fiber components in fluoride fiber is a challenging problem, due to the difference in glass properties and handling requirements compared to standard silica fibers. Here, we address this problem by reporting the direct femtosecond (fs) laser inscription of high reflectivity (99.98%), low loss (<0.5 dB), Type-I fiber Bragg gratings (FBGs) into the core of soft-glass ZBLAN fibers for mid-IR applications.

Original languageEnglish
Title of host publicationCLEO/Europe-EQEC 2019
Subtitle of host publicationConference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1
Number of pages1
ISBN (Electronic)9781728104690, 9781557528209
ISBN (Print)9781728104706
DOIs
Publication statusPublished - Jun 2019
Event2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019 - Munich, Germany
Duration: 23 Jun 201927 Jun 2019

Conference

Conference2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019
CountryGermany
CityMunich
Period23/06/1927/06/19

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