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A high power 1178nm Yb-doped photonic bandgap fiber laser is reported. A fiber Bragg grating and a Fresnel fiber end construct the resonator. 98W output power and 54% slope efficiency are achieved without parasitic lasing.
We report a high power single-frequency 1178 nm laser combining an optically-pumped semiconductor disk laser and an Yb-doped photonic bandgap fiber amplifier. An output power of 31 W with <200 kHz linewidth without SBS was demonstrated.
In this paper we present our recent result on utilizing resonant/bandgap fiber designs to achieve high performance ytterbium doped fiber amplifers for achieving diffraction limited beam quality in large mode area fibers, robust bending performance and gain shaping for long wavelength operation of yb-doped amplifiers.
We present recent development of photonic crystal fiber amplifiers containing photonic bandgap structures for enhanced spectral and modal filtering functionality.
We report an 1178nm fiber oscillator using Yb-doped solid-core photonic bandgap fiber in an all-fiber format. 53.6W output power is achieved with 53% slope efficiency. ASE and parasitic lasing in high-gain wavelength is effectively suppressed.
Photonic crystal fibres (PCFs) emerged as a research topic in the mid 1990'ies [1]. Today, 15 years later, these fibres are increasing deployed in various commercial markets. Here, we will address three of these markets; medical imaging, materials processing and sensors. We will describe how the PCFs provide radical improvements and illustrate the strong diversity in the evolution of PCFs to serve...
Rare-earth doped photonic bandgap fibers enables novel gain profile engineering to realize laser operations at new wavelengths which have never been possible by the conventional fiber lasers. Our recent activities will be reviewed.
Single-frequency operation in an ytterbium-doped photonic bandgap fiber amplifier is presented for the first time. 16 W, 1178 nm narrow linewidth radiation, free from both amplified spontaneous emission and stimulated Brillouin scattering, was obtained.
Yb-doped fiber laser operating at the long-wavelength edge (1150–1200nm) of the broad gain spectrum has been investigated for yellow-orange sources. Power scaling in this region has been recently achieved by Yb-doped solid-core photonic bandgap fibers, in which the Yb gain profile is engineered by the sharp-cut, bandpass distributed filtering and therefore amplified spontaneous emission in the high-gain...
We have generated 167 W of output power at 1178 nm using an ytterbium-doped photonic bandgap fiber. Distributed spectral filtering efficiently suppresses amplified spontaneous emission at shorter wavelengths and enables power scalable amplification at 1178nm.
Solid photonic bandgap fibers offer distributed spectral filtering with extraordinarily high suppression. This opens new possibilities of artificially tailoring the gain spectrum of fibers. We present record-performance of such fibers and outline their future applications.
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