Recent progress will be reviewed on high-power, single-frequency GaSb-based VECSEL, covering the 2.0 – 2.4 μm wavelength range. Up to 2.8 W of continuous-wave, single-frequency output power was reached at 18°C heatsink temperature and 2.23 µm emission wavelength. We will discuss the tuning capabilities of different setups and means for absolute wavelength stabilization.
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Rattunde et al. (2024) studied this question.
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