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All-fiber actively Q-switched Er3+/Yb3+ co-doped ring laser

✍ Scribed by Shu-Min Zhang; Fu-Yun Lu; Jian Wang

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
315 KB
Volume
49
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

We report on a all‐fiber actively Q‐switched laser based on a Mach‐Zehnder interferometer (MZI). One of the arms of the MZI is bonded on a piezoelectric transducer (PZT). The path length difference between those two arms will change when a RF electric signal is applied drives the PZT, allowing control of the Q‐factor of the cavity and, thus, performing active Q‐switching. Using Er^3+^/Yb^3+^ co‐doped fiber (EYDF) and a maximum pump power of 712 mW, Q‐switch pulses with peak power of 2.2 W and pulse width of 1.2 μs were obtained. Furthermore, our result also shows that, to generate stable Q‐switched‐pulses, with different pump power, one must select different modulation frequency, this phenomenon is experimentally proved for the first time to our knowledge. The pulse repetition rate of the laser can be adjusted from few Hz up to 25 kHz. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2183–2186, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22692

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