Abstract
Abstract A synchronously pumped fibre Raman oscillator has been constructed employing a mode-locked c.w. Nd:YAG laser as a pump source and 150 m of single-mode optical fibre as the Raman-active medium. A detailed spectral and temporal study of the laser has been undertaken. Time-dispersion tuning offered an operating spectral range of 1·0725–1·1220 µm for the first Stokes oscillation and 1·149–1·179 µm for the associated second Stokes component. Pulse durations ∼ 100 ps were generated with average output powers of about 40 and 9 mW for the first and second Stokes Raman pulses respectively.
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