All polarization‐maintaining type Yb mode‐locked fiber laser with photonic crystal fiber

Abstract

SUMMARYWe have demonstrated a polarization-maintaining (PM) Yb mode-lock highly stable fiber laser with high beam quality. The characteristics of side-hole type PM Yb-doped fiber (YDF) were examined. The splicing connection between PM-YDF and PANDA fiber was optimized. We optimized the laser oscillation output and improved the efficiency of the fiber length in the Fabry-Perot cavity. We demonstrated an all PM single-mode fiber ring cavity. Mode-locking was produced by inserting a semiconductor saturable absorption mirror (SESAM). A PM photonic crystal fiber (PCF) was used for dispersion compensation in the cavity. Stable mode-lock operation with 500-ps pulses at 7.2 MHz was observed.

All-fiber lasers through photonic crystal fibers

“…Multiwavelength Brillouinerbium fiber lasers were also demonstrated: using a 70 m solid-core highly nonlinear PCF [86,87] or by using 100 m PCF [88]. Ytterbium-doped fiber lasers were developed: pumping a highly nonlinear PCF with zero-dispersion [89], or using a 20 m PCF to provide four-wave mixing [90], or through a polarization maintaining PCF for dispersion compensation [91], or even with an anomalous dispersion PCF [92]. Multiwavelength fiber ring lasers based on semiconductor optical amplifiers have been developed: using 100 m highly nonlinear PCF [93], or incorporating a PCF in order to improve the nonlinear polarization rotation effect [94], or even through a twin-core PCF based in-line comb filter [95].…”