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High-power, ultra-stable, single-frequency operation of a long, doped-fiber external-cavity, grating-semiconductor laser

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Abstract

Robust high-power, single frequency operation of semiconductor external cavity lasers is demonstrated in a novel extended two-level doped-fiber absorbing system. Outstanding wavelength and line-width stability is observed in long external cavities.

©2003 Optical Society of America

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Figures (6)

Fig. 1.
Fig. 1. SDL2 Laser spectra vs. drive current.
Fig. 2.
Fig. 2. The spectrum of SDL2 laser in the coherence collapse regime at different drive currents.
Fig. 3.
Fig. 3. SDL-2 spectra as a function of drive current with the Yb:doped fiber as an intra-cavity element. The inset shows the cavity design.
Fig. 4.
Fig. 4. L–I characteristics of SDL-2 with the cavity configuration shown in Fig. 3 (□), and for SDL-1 (Δ).
Fig. 5.
Fig. 5. SDL-2 wavelength vs. drive current, showing excellent stability (measurement resolution is 0.8pm).
Fig. 6.
Fig. 6. Long term operating wavelength stability of SDL2 external resonator laser measured with a wavelength meter.

Tables (1)

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Table 1: Summary data on lasers with an external cavity used in experiments

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