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Oriented zinc oxide nanorods: A novel saturable absorber for lasers in the near-infrared
ITMO Univ, Kronverkskiy Pr 49, St Petersburg 197101, Russia..
Sultan Qaboos Univ, Chair Nanotechnol, Water Res Ctr, POB 17, Muscat 123, Oman.;Asian Inst Technol, Sch Engn & Technol, Nanotechnol, POB 4, Klongluang 12120, Pathumthani, Thailand..
URV, Dept Quim Fis & Inorgan, Fis & Cristallog Mat & Nanomat FiCMA FiCNA EMaS, Campus Sescelades, Tarragona 43007, Spain..
Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R China.;Shandong Univ, Inst Crystal Mat, Jinan 250100, Shandong, Peoples R China..
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2018 (English)In: Beilstein Journal of Nanotechnology, ISSN 2190-4286, Vol. 9, p. 2730-2740Article in journal (Refereed) Published
Abstract [en]

Zinc oxide (ZnO) nanorods (NRs) oriented along the crystallographic [001] axis are grown by the hydrothermal method on glass substrates. The ZnO NRs exhibit a broadband (1-2 mu m) near-IR absorption ascribed to the singly charged zinc vacancy V-z(n)-1. The saturable absorption of the ZnO NRs is studied at approximate to 1 mu m under picosecond excitation, revealing a low saturation intensity, approximate to 10 kW/cm(2), and high fraction of the saturable losses. The ZnO NRs are applied as saturable absorbers in diode-pumped Yb (approximate to 1.03 mu m) and Tm (approximate to 1.94 mu m) lasers generating nanosecond pulses. The ZnO NRs grown on various optical surfaces are promising broadband saturable absorbers for nanosecond near-IR lasers in bulk and waveguide geometries.

Place, publisher, year, edition, pages
BEILSTEIN-INSTITUT , 2018. Vol. 9, p. 2730-2740
Keywords [en]
oriented nanorods, Q-switching, saturable absorption, solid-state lasers, zinc oxide
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-238532DOI: 10.3762/bjnano.9.255ISI: 000448084400001Scopus ID: 2-s2.0-85056265398OAI: oai:DiVA.org:kth-238532DiVA, id: diva2:1260992
Note

QC 20181106

Available from: 2018-11-06 Created: 2018-11-06 Last updated: 2020-03-09Bibliographically approved

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Dutta, Joydeep

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