Dual wavelength Q-switched cascade laser

doi:10.1364/OL.37.002208

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

Editor: Alan E. Willner
Vol. 37, Iss. 12 — Jun. 15, 2012
pp: 2208–2210

Dual wavelength Q-switched cascade laser

Jianfeng Li, Tomonori Hu, and Stuart D. Jackson »View Author Affiliations

Optics Letters, Vol. 37, Issue 12, pp. 2208-2210 (2012)
http://dx.doi.org/10.1364/OL.37.002208

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Abstract

A diode-cladding-pumped dual wavelength $Q$ -switched ${Ho}^{3 +}$ -doped fluoride cascade fiber laser operating in the mid-infrared is demonstrated. Stable pulse trains from the ${}^{5}{I_{6}} \to {}^{5}{I_{7}}$ and ${}^{5}{I_{7}} \to {}^{5}{I_{8}}$ laser transitions were produced, and the μs-level time delay between the pulses from each transition was dependent on the pump power. At maximum pump power and at an acousto-optic modulator repetition rate of 25 kHz, the ${}^{5}{I_{6}} \to {}^{5}{I_{7}}$ transition pulse operated at 3.005 μm, a pulse energy of 29 μJ, and a pulse width of 380 ns; the ${}^{5}{I_{7}} \to {}^{5}{I_{8}}$ transition pulse correspondingly produced 7 μJ pulse energy and 260 ns pulse width at 2.074 μm. To the best of our knowledge, this is the first demonstration of a $Q$ -switched fiber laser operating beyond 3 μm.

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: March 6, 2012
Revised Manuscript: April 12, 2012
Manuscript Accepted: April 12, 2012
Published: June 4, 2012

Citation
Jianfeng Li, Tomonori Hu, and Stuart D. Jackson, "Dual wavelength Q-switched cascade laser," Opt. Lett. 37, 2208-2210 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-12-2208

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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

Dual wavelength Q-switched cascade laser

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