Energy recycling versus lifetime quenching in erbium-doped 3-μm fiber lasers

Markus Pollnau; Stuart D. Jackson

doi:10.1109/3.980268

Energy recycling versus lifetime quenching in erbium-doped 3-μm fiber lasers

Markus Pollnau^*, Stuart D. Jackson

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

80 Citations (Scopus)

Abstract

Based on recently published spectroscopic measurements of the relevant energy-transfer parameters, we performed a detailed analysis of the population mechanisms and the characteristics of the output from Er³⁺-singly-doped and Er³⁺, Pr³⁺-codoped ZBLAN fiber lasers operating at 3 μm, for various Er³⁺ concentrations and pump powers. Whereas both approaches resulted in similar laser performance at Er³⁺ concentrations <4 mol.% and pump powers <10 W absorbed, it is theoretically shown here that the Er³⁺-singly-doped system will be advantageous for higher Er³⁺ concentrations and pump powers. In this case, energy recycling by energy-transfer upconversion from the lower to the upper laser level can increase the slope efficiency to values greater than the Stokes efficiency, as is associated with a number of Er³⁺-doped crystal lasers. Output powers at 3 μm on the order of 10 W are predicted.

Original language	English
Pages (from-to)	162-169
Number of pages	8
Journal	IEEE Journal of Quantum Electronics
Volume	38
Issue number	2
DOIs	https://doi.org/10.1109/3.980268
Publication status	Published - 7 Aug 2002
Externally published	Yes

Keywords

Diode pumped lasers
Infrared lasers
Laser biomedical applications
Optical fiber lasers
Rare earth lasers

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10.1109/3.980268

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title = "Energy recycling versus lifetime quenching in erbium-doped 3-μm fiber lasers",

abstract = "Based on recently published spectroscopic measurements of the relevant energy-transfer parameters, we performed a detailed analysis of the population mechanisms and the characteristics of the output from Er3+-singly-doped and Er3+, Pr3+-codoped ZBLAN fiber lasers operating at 3 μm, for various Er3+ concentrations and pump powers. Whereas both approaches resulted in similar laser performance at Er3+ concentrations <4 mol.% and pump powers <10 W absorbed, it is theoretically shown here that the Er3+-singly-doped system will be advantageous for higher Er3+ concentrations and pump powers. In this case, energy recycling by energy-transfer upconversion from the lower to the upper laser level can increase the slope efficiency to values greater than the Stokes efficiency, as is associated with a number of Er3+-doped crystal lasers. Output powers at 3 μm on the order of 10 W are predicted.",

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AB - Based on recently published spectroscopic measurements of the relevant energy-transfer parameters, we performed a detailed analysis of the population mechanisms and the characteristics of the output from Er3+-singly-doped and Er3+, Pr3+-codoped ZBLAN fiber lasers operating at 3 μm, for various Er3+ concentrations and pump powers. Whereas both approaches resulted in similar laser performance at Er3+ concentrations <4 mol.% and pump powers <10 W absorbed, it is theoretically shown here that the Er3+-singly-doped system will be advantageous for higher Er3+ concentrations and pump powers. In this case, energy recycling by energy-transfer upconversion from the lower to the upper laser level can increase the slope efficiency to values greater than the Stokes efficiency, as is associated with a number of Er3+-doped crystal lasers. Output powers at 3 μm on the order of 10 W are predicted.

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Energy recycling versus lifetime quenching in erbium-doped 3-μm fiber lasers

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