Abstract
The authors report near-diffraction-limited high power (~1 W), single longitudinal mode emission from a 960 – 980 nm tunable CW diode laser, consisting of an unstable resonator tapered amplifier structure in a grating-tuned external cavity. > 3 W output powers were obtained near the gain peak (~970 nm) from the grating-tuned diode laser in a quasi-CW mode (500 µs, 100 Hz) of operation.
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