Abstract
Silica optical fiber derived from yttrium-aluminum-garnet (YAG) crystals is an excellent high-gain fiber due to their high rare earth ions doping concentration. It offers a new opportunity of addressing the constraints on optical-to-optical conversion efficiency and output power in silica gain fiber-based linearly polarized single-frequency fiber lasers (LPSFFL). Here, we fabricated a 6.57 wt.% Yb: YAG crystal-derived silica fiber (YCDSF) with a gain coefficient of 6.0 dB/cm at 1030 nm. Using a 0.8-cm-long YCDSF, a stable LPSFFL has been constructed, having an output power of over 350 mW and an optical-to-optical conversion efficiency as high as 63.0%. Among the similar YCDSF-based SFFLs, it has the highest output power and the largest conversion efficiency, to the best of our knowledge. By controlling the polarization state in the cavity, the optimum performances of the laser were accomplished with a relative intensity noise of <-143.5 dB/Hz, and a polarization extinction ratio of >21 dB. The approach presented here could be applicable to other RE: YAG crystal-derived silica fibers-based LPSFFLs operating at different wavelengths, paving the way for their applications in areas such as industrial processing, bioanalytic, metrology, and precision detection.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
