Low-dimensional nanomaterial saturable absorbers for ultrashort-pulsed waveguide lasers

Xiantao Jiang, Simon Gross, Michael J. Withford, Han Zhang, Dong Il Yeom, Fabian Rotermund, Alexander Fuerbach

Research output: Contribution to journalArticleResearchpeer-review

Abstract

A wide range of saturable absorbers composed of novel low-dimensional nanomaterials were fabricated, and their linear and nonlinear optical properties were characterized. Furthermore, their suitability for ultrashort-pulse generation in waveguide laser operating at a wavelength of 2 microns was demonstrated and passively q-switched modelocked operation was achieved with all absorbers. The material systems that were studied in this work include nanosheet-based absorbers composed of graphene, carbon nanotubes, black phosphorus, transition-metal dichalcogenides, topological insulators and indium tin oxide. By utilizing a uniform few-layer spin coating fabrication technique and by employing a single, identical laser resonator, a direct comparison of the individual characteristics of these materials in the context of short-pulse generation in waveguide lasers was made possible. Each of the individually fabricated and characterized saturable absorbers was placed inside a thulium-doped fluoride glass waveguide chip laser cavity and the resulting output performance was analyzed and contrasted. It was further found that the few-layer spin coating approach enables fine-tuning of the absorber characteristics and that all low-dimensional nanomaterials under investigation can be utilized for ultrashort pulse generation in the 2-micron wavelength range. General guidelines for the design of passively modulated shortpulsed laser oscillators are presented based on those findings.

LanguageEnglish
Pages3055-3071
Number of pages17
JournalOptical Materials Express
Volume8
Issue number10
DOIs
Publication statusPublished - 1 Oct 2018

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Saturable absorbers
Nanostructured materials
Waveguides
Laser resonators
Spin coating
Ultrashort pulses
Lasers
Thulium
Wavelength
Carbon Nanotubes
Graphite
Nanosheets
Tin oxides
Fluorides
Indium
Phosphorus
Graphene
Transition metals
Laser pulses
Carbon nanotubes

Cite this

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title = "Low-dimensional nanomaterial saturable absorbers for ultrashort-pulsed waveguide lasers",
abstract = "A wide range of saturable absorbers composed of novel low-dimensional nanomaterials were fabricated, and their linear and nonlinear optical properties were characterized. Furthermore, their suitability for ultrashort-pulse generation in waveguide laser operating at a wavelength of 2 microns was demonstrated and passively q-switched modelocked operation was achieved with all absorbers. The material systems that were studied in this work include nanosheet-based absorbers composed of graphene, carbon nanotubes, black phosphorus, transition-metal dichalcogenides, topological insulators and indium tin oxide. By utilizing a uniform few-layer spin coating fabrication technique and by employing a single, identical laser resonator, a direct comparison of the individual characteristics of these materials in the context of short-pulse generation in waveguide lasers was made possible. Each of the individually fabricated and characterized saturable absorbers was placed inside a thulium-doped fluoride glass waveguide chip laser cavity and the resulting output performance was analyzed and contrasted. It was further found that the few-layer spin coating approach enables fine-tuning of the absorber characteristics and that all low-dimensional nanomaterials under investigation can be utilized for ultrashort pulse generation in the 2-micron wavelength range. General guidelines for the design of passively modulated shortpulsed laser oscillators are presented based on those findings.",
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Low-dimensional nanomaterial saturable absorbers for ultrashort-pulsed waveguide lasers. / Jiang, Xiantao; Gross, Simon; Withford, Michael J.; Zhang, Han; Yeom, Dong Il; Rotermund, Fabian; Fuerbach, Alexander.

In: Optical Materials Express, Vol. 8, No. 10, 01.10.2018, p. 3055-3071.

Research output: Contribution to journalArticleResearchpeer-review

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