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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 5 — Mar. 1, 2014
  • pp: 1153–1156

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

Nikolas Iwanus, Darren D. Hudson, Tomonori Hu, and Stuart D. Jackson  »View Author Affiliations


Optics Letters, Vol. 39, Issue 5, pp. 1153-1156 (2014)
http://dx.doi.org/10.1364/OL.39.001153


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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 I56I57 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.

© 2014 Optical Society of America

OCIS Codes
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3510) Lasers and laser optics : Lasers, fiber

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: November 7, 2013
Revised Manuscript: January 16, 2014
Manuscript Accepted: January 17, 2014
Published: February 20, 2014

Citation
Nikolas Iwanus, Darren D. Hudson, Tomonori Hu, and Stuart D. Jackson, "Aim at the bottom: directly exciting the lower level of a laser transition for additional functionality," Opt. Lett. 39, 1153-1156 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-5-1153


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