A remotely-pumped 130-W 1178-nm single-frequency linearly-polarized Raman fiber amplifier

D. Wei; N. Guo; V. Karpov; W. R. L. Clements

doi:10.1117/12.3021913

27 August 2024 A remotely-pumped 130-W 1178-nm single-frequency linearly-polarized Raman fiber amplifier

D. Wei, N. Guo, V. Karpov, W. R. L. Clements

Author Affiliations +

Proceedings Volume 13097, Adaptive Optics Systems IX; 130972J (2024) https://doi.org/10.1117/12.3021913
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

Remotely pumped by a single-mode, polarization-maintaining (PM) 1120-nm fiber laser, a single-frequency linearly-polarized 1178-nm Raman fiber amplifier (RFA) has been developed with a maximum continuous-wave (CW) output power of 130-W. This remotely-pumped high-power RFA system features the same modular, compact and ruggedized design as the proven SodiumStar 20/2 and provides the potential for a guide star laser with a 589-nm output power approaching 100-W, assuming a 10 to15% D2b sideband content and a typical overall conversion efficiency of a resonant second harmonic generator of ~ 70%. Utilizing innovative patented remote pump delivery technology, the 589-nm laser head (LH), which includes the RFA itself, can now be separated physically from the electronics cabinet (EC), which hosts the bulky and heat-generating control electronics, the 1178-nm seed laser, the fiber laser power supply and the fiber laser pump module. The physical separation distance from the LH to the EC can now be as long as 30-m for a 130-W RFA and up to 50-m for a 100-W RFA. The remote pumping capability of this high-power RFA offers important system configuration flexibility and is well-suited for laser guide star assisted adaptive optics systems in ground-based large-aperture astronomical telescopes, optical ground stations and space debris tracking systems, particularly when the available laser launching platform space is strictly limited.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

D. Wei, N. Guo, V. Karpov, and W. R. L. Clements "A remotely-pumped 130-W 1178-nm single-frequency linearly-polarized Raman fiber amplifier", Proc. SPIE 13097, Adaptive Optics Systems IX, 130972J (27 August 2024); https://doi.org/10.1117/12.3021913

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