Abstract
AbstractWe 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. © 2007 Wiley Periodicals, Inc. Electron Comm Jpn Pt 2, 90(5): 27–32, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecjb.20326
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