Advanced packaging and power scaling of narrow linewidth fiber amplifiers

Daniel Creeden; Mitchell Underwood; Tiffanie G. D'Alberto; Tony Tero; David Hosmer; Ronald Basque; Joshua Galipeau; Jill Sears; David Paquette; Chris Ebert

doi:10.1117/12.2305364

4 May 2018 Advanced packaging and power scaling of narrow linewidth fiber amplifiers

Daniel Creeden, Mitchell Underwood, Tiffanie G. D'Alberto, Tony Tero, David Hosmer, Ronald Basque, Joshua Galipeau, Jill Sears, David Paquette, Chris Ebert

Author Affiliations +

Proceedings Volume 10637, Laser Technology for Defense and Security XIV; 1063703 (2018) https://doi.org/10.1117/12.2305364
Event: SPIE Defense + Security, 2018, Orlando, FL, United States

Abstract

Coherent | Nufern has a long history of high power Yb-doped fiber amplifier and component development. This ranges from amplifiers in the >1.5kW regime up to demonstrations of >3kW output power. In this paper, we discuss our latest advancements in the performance of high power, narrow linewidth, kW-class, monolithic Yb-doped fiber amplifiers, as well as the packaging of our two newest amplifier systems. Our lightest amplifier offers 1.6kW output power at <4.5kg/kW. This is an OEM version which requires external power, but offers a significant (nearly 1.5x) decrease in overall mass compared to our previous generation of amplifiers. Our 2.1kW amplifier is our smallest and highest power amplifier. It contains integrated electronics to offer a complete stand-alone amplifier, requiring only DC voltage input, external cooling, and software control. This has nearly a 2x reduction in volume compared to our previous generation. We discuss the performance and specifications of these two amplifier packages. This includes power scaling with narrow linewidth, as well as a significant and simultaneous reduction in volume and mass compared to our previous generations. We discuss the packaging challenges with these architectures, as well as the diode technologies which have enabled such a reduction in our packaging volume and mass. We also discuss experimental results in the power scaling of these fiber amplifiers.

Citation Download Citation

Daniel Creeden, Mitchell Underwood, Tiffanie G. D'Alberto, Tony Tero, David Hosmer, Ronald Basque, Joshua Galipeau, Jill Sears, David Paquette, and Chris Ebert "Advanced packaging and power scaling of narrow linewidth fiber amplifiers", Proc. SPIE 10637, Laser Technology for Defense and Security XIV, 1063703 (4 May 2018); https://doi.org/10.1117/12.2305364

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KEYWORDS

Optical amplifiers

Fiber amplifiers

Amplifiers

Diodes

Packaging

High power fiber amplifiers

Electronics

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