All-fiber clad-pumped Tm3+-doped fiber amplifier using high power fiber combiner |
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Authors: | Y Zhang T Jing |
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Institution: | 1. The National Key Lab of Tunable Laser Technology, Harbin Institute of Technology, Harbin, China 2. Department of Science and Technology Education, Quanzhou Normal University, Quanzhou, 362000, China
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Abstract: | The diode laser (LD) clad-pumped 1947.6 nm continuous wave (CW) Tm3+-doped fiber amplifier is reported using the master oscillation power amplifier (MOPA) method. The injected seed laser is
provided by an all-fiber LD-clad-pumped Tm3+-doped single-mode fiber laser, which has a nearly 2.4 W maximal output power and 0.1 nm ultra-narrow linewidth based on the
intracore reflection FBG. Using the 25/400 μm double-clad LMA Tm3+-doped fiber as the gain fiber, the output maximal output power is 30.6 W from the fiber amplifier, with a slope efficiency
of 39.1% respected to the LD total output power. A high power multi-mode fiber combiner is used to couple high power LD light
into the gain fiber. The output wavelength is also located at 1947.6 nm, with the slightly expanded laser linewidth of 0.2
nm. |
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Keywords: | |
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