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Generation of 100 nJ pulse, 1 W average power at
$2~\unicode[STIX]{x03BC}\text{m}$ from an intermode beating mode-locked all-fiber laser
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- Journal:
- High Power Laser Science and Engineering / Volume 7 / 2019
- Published online by Cambridge University Press:
- 12 December 2019, e65
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- Article
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We report on the investigation of intermode beating mode-locked (IBML) pulse generation in a simple all-fiber Tm
$^{3+}$-doped double clad fiber laser (TDFL). This IBML TDFL is implemented by matching longitudinal-mode frequency between 793 nm laser and TDFL without extra mode locker. The central wavelength of 
${\sim}1983~\text{nm}$, the fundamental pulse frequency of 
${\sim}9.6~\text{MHz}$ and the signal-to-noise ratio (SNR) of 
${>}50~\text{dB}$ are achieved in this IBML TDFL. With laser cavity optimization, the IBML TDFL can finally generate an average output power of 1.03 W with corresponding pulse energy of 
${\sim}107~\text{nJ}$. These results can provide an easily accessible way to develop compact large-energy, high-power TDFLs.
