In this letter, we report on a high-power operation of an optically pumped quantum-dot semiconductor disk laser designed for emission at 1180 nm. As a consequence of the optimization of the operation conditions, a record-high continuous-wave output power exceeding 7 W is obtained for this wavelength at a heat-sink temperature of 2 °C. A wavelength tuning over a range of 37 nm is achieved using a birefringent filter inside the cavity.
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Funding: European Community’s Seventh Framework Programme through the FAST-DOT Project under Contract 224338 and in part by the German Research Foundation under Project GRK1782
- optical pumping
- quantum-dot (QD) semiconductors
- semiconductor disk laser (SDL)
- vertical-external cavity surface-emitting laser (VECSEL)
- wavelength tuning