Aim at the bottom: Directly exciting the lower level of a laser transition for additional functionality

Nikolas Iwanus, Darren D. Hudson, Tomonori Hu, Stuart D. Jackson

Research output: Contribution to journalArticleResearchpeer-review

Abstract

We introduce the concept of directly exciting the lower level of a laser transition in addition to the upper laser level for the provision of new possibilities for light emission from a fiber. In a first demonstration, using diode laser light at 1150 and 1950 nm, we respectively excite the upper and lower laser level of the 5I65I 7 transition (2.9 μm) of Ho3+-doped ZBLAN, demonstrating a power-scalable arrangement that can switch between free-running and superluminescent spectral output. The spectral composition of the gain-switched pulse derived from modulating the upper laser level pump light depends entirely on the degree of lower laser level excitation at 1950 nm.

LanguageEnglish
Pages1153-1156
Number of pages4
JournalOptics Letters
Volume39
Issue number5
DOIs
Publication statusPublished - 1 Mar 2014
Externally publishedYes

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lasers
light emission
switches
semiconductor lasers
pumps
fibers
output
pulses
excitation

Cite this

Iwanus, Nikolas ; Hudson, Darren D. ; Hu, Tomonori ; Jackson, Stuart D. / Aim at the bottom : Directly exciting the lower level of a laser transition for additional functionality. In: Optics Letters. 2014 ; Vol. 39, No. 5. pp. 1153-1156.
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Aim at the bottom : Directly exciting the lower level of a laser transition for additional functionality. / Iwanus, Nikolas; Hudson, Darren D.; Hu, Tomonori; Jackson, Stuart D.

In: Optics Letters, Vol. 39, No. 5, 01.03.2014, p. 1153-1156.

Research output: Contribution to journalArticleResearchpeer-review

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