1-μm and 1.3-μm femtosecond lasers mode-locked using quantum-dot-based saturable absorbers
- Lagatsky, A. A.
- Bain, F.
- Livshits, D. A.
- Zhukov, A. E.
- Ustinov, V. M.
- Brown, C. T. A.
- Rafailov, E. U.
- Sibbett, W.
DOIAbstract
We report on the generation of femtosecond pulses in the 1-µm and 1.3-µm spectral regions from Yb:KYW and Cr:forsterite lasers, respectively, where InAs/InGaAs quantum dot based saturable absorber mirrors (QD-SAMs) have been utilised. For the experimental observations reported here, cw Yb:KYW and Cr:forsterite lasers pumped by a tapered 980nm laser diode and a Nd:YVO4 laser at 1064nm, respectively, were constructed and evaluated. Highly asymmetric Z-fold laser cavities were configured for both laser systems. During continuous wave operation the Yb:KYW laser produced an output power of 2W (3.5W incident power) at 1047nm and 250mW of average power (6W incident power) was generated by Cr:forsterite laser at 1270nm
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