Progress in high-power fiber lasers

Bhagavatula, V. A.; Bhat, R.; Berkey, G.E.; Chen, Xin; Dejneka, Matthew J.; Gallagher, Michael T.; Hughes, Lawrence C.; Köch, Karl; Koh, Joohyun; Li, Mingjun; Liu, Victor X.; Nolan, Daniel A.; Rasmussen, H.; Tennent, C.; Venkataraman, Natesan; Walton, Donnell T.; Wang, Jing; Zah, Chung−En; Zenteno, L.A.

doi:10.1117/12.541424

Cited by 12 publications

(5 citation statements)

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“…In this case the active dopants are deposited directly during fabrication into the core of the single polarization fiber. Both approaches have been experimentally demonstrated [11,12]. As an example, Figure 4 shows the single polarization output power measured using a dual-hole Yb-doped single polarization fiber.…”

Section: Applicationsmentioning

confidence: 97%

Single polarization fibers and applications

Nolan

Chen

et al. 2006

2006 Optical Fiber Communication Conference and the National Fiber Optic Engineers Conference

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Section: Applicationsmentioning

confidence: 97%

Single polarization fibers and applications

Nolan

Chen

et al. 2006

2006 Optical Fiber Communication Conference and the National Fiber Optic Engineers Conference

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“…Limited heat conductivity of the polymer may potentially isolate the pump core thermally and cause undesired heating of the fiber. Further, concerns regarding polymer degradation at high pump powers and elevated temperatures have been raised [2,3]. Both problems may cause reduced reliability and catastrophic breakdown at high powers.…”

Section: The Air-clad Photonic Crystal Fibermentioning

confidence: 99%

High-power photonic crystal fibers

Hansen¹,

Broeng²,

Petersson³

et al. 2006

Fiber Lasers III: Technology, Systems, and Applications

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Fiber lasers deliver excellent beam-quality and high efficiency in a robust and largely maintenance-free format, and are now able to do so with output powers in the kilowatt regime. Consequently, fiber lasers have become an attractive alternative to solid-state and gas lasers for e.g. material processing like welding, cutting and marking. The all-glass air-clad photonic crystal fibers (PCFs) combine large mode-field diameters (currently up to 40 µm), high numerical aperture (typically in the 0.6-0.65 range), high pump absorption (30 dB/m demonstrated in ytterbium) and excellent high-power handling (kW CW and mJ pulses demonstrated). These properties have made this fiber type one of the most promising candidates for the future high-power fiber laser and amplifier systems that are expected to replace many of the traditional systems in use today. To utilize the high numerical aperture and large mode-field diameters of the air-clad PCFs, special care must be taken in the system integration. In this paper, we will show examples of how these fibers can be integrated in laser and amplifier sub-assemblies with standard fiber pump-interfaces for use with single-emitter diodes or diode-bar pump sources. Moreover, we report on the most recent advances in fiber design including rod-type fibers and broadband polarizing ytterbium-doped large-mode-area air-clad fibers. Finally, we will review the latest results on PCF-based amplifier and laser configurations with special focus on high-power CW systems and high-energy pulsed configurations.

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“…In this section we report two experiments using dual-hole SP fibers to produce linear polarized light in fiber lasers. 3,20 In the first experimental work, the linear polarization laser output was achieved using a passive SP fiber. 3 The laser cavity comprises a PM gain fiber and a SP fiber pumped with un-polarized light.…”

Section: Linearly Polarized High Power Fiber Lasersmentioning

confidence: 99%

“…20 The double clad fiber was made using the dual-hole elliptical core single polarization fiber design doped with Yb. Figure 1 shows the schematic of the single polarization double clad fiber.…”

Section: Linearly Polarized High Power Fiber Lasersmentioning

confidence: 99%