Extending laser wavelengths to 1630 nm in centimeter-scale Er-phosphate fiber
Yan Sun, Qiubai Yang, Yafei Wang, Fan Wang, Xiaoqi Jiang, Xin Wang, Lili Hu, Chunlei Yu, Meisong Liao, Shubin Chen
Abstract
The spectral bandwidth of Er-doped fibers limits their lasing wavelength at longer wave band. Here, to the best of our knowledge, we report a broad emission band (1420‒1680 nm) of Er 3+ and demonstrate for the first time an Er-phosphate fiber, which supports laser oscillation at the extended wavelengths of 1627 nm and 1630 nm, with the output powers and slope efficiencies of 44 mW/12.5% and 16.5 mW/5.6%, respectively, pumped at 1480 nm. To the best of our knowledge, these are the highest output powers and slope efficiencies at 1627 nm and 1630 nm from an Er 3+ -doped all-fiber configuration.
Topics & Concepts
Fiber laserMaterials scienceWavelengthOpticsLasing thresholdLaserBandwidth (computing)Dispersion-shifted fiberOptical fiberErbium doped fiber amplifierAmplified spontaneous emissionFiberOptoelectronicsOptical amplifierFiber optic sensorPhysicsTelecommunicationsComposite materialComputer scienceSolid State Laser TechnologiesPhotonic Crystal and Fiber OpticsAdvanced Fiber Laser Technologies