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We report a high-power, high-efficiency Tm, Ho:YAlO3 (Tm, Ho:YAP) laser pumped by two laser diodes. The Tm (5 at.%) and Ho (0.5 at.%):YAP crystal is cut along the a axes, and the resultingcrystals are measured 4 × 4 × 8 mm3. The laser crystal is double end-pumped by two 18.0-W fiber-coupled laser diodes at 793.6 nm, and the output power of the Tm, Ho:YAP laser is 13.8W in continuous wave (CW) mode...
We report a 1.55μΜ square microcavity laser monolithically integrated on GaAs substrates. The mode characteristics of the microcavity laser are numerically investigated by three-dimensional finite difference time domain method. The dependences of the whispering-gallery modes on the width of the output waveguide and the etching depth are discussed. For the cavity with the side length of 12μm and the...
This paper reports a 400-km ultra-long haul unrepealed transmission system in a 8×10 Gbit/s optical transmission network (OTN) by using forward Raman amplifier and backward second order remotely optical pumped amplifier(ROPA). A second order ROPA is obtained by adding an auxiliary second order pump to the first order ROPA. Through experiment, we compare the performance of 1st ROPA and 2nd ROPA in...
A multiwavelength Er-doped fibre ring laser system using all fibre Lyot filter and highly nonlinear fibre was experimentally demonstrated, with degree of polarization up to 99.9% and 50 channels output.
We propose and experimentally investigate a linearly-polarized narrow linewidth random fiber laser (RFL) operating at 1080 nm and boost the output power to kilowatt-level with near-diffraction-limited beam quality by a master-oscillation-power-amplifier (MOPA) configuration. The RFL based on half-opened cavity generates 0.71 W seed laser with 88 pm full width at half-maximum (FWHM) linewidth and 22...
A 1.5 μΜ tunable CW single-frequency seed laser is injected into the methane-filled negative curvature hollow-core fiber, and then amplified by stimulated Raman scattering of methane molecule. The Stokes linewidth is measured at the output using a scanning Fabry-Perot interferometer. When the wavelength of the seed laser is tuned to the Stokes transition and the polarization direction of the seed...
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