Abstract

We report a tunable synchronously pumped fiber Raman laser (SPFRL) in the near-infrared (NIR) and visible wavebands pumped by a pulsed, all-fiber PM $1060\mathrm{nm}$ master oscillator power amplifier (MOPA) and its frequency-doubled output, respectively. The seed was adaptively shaped to deliver rectangular output pulses, thereby enabling selective excitation of individual Raman Stokes lines. Using filtered synchronous feedback of the desired Raman Stokes line, the linewidth of the SPFRL was reduced by a factor of 4 and the extinction ratio of the desired Raman Stokes was improved by more than $3\mathrm{dB}$ relative to a simple single-pass conversion scheme. A continuous tuning range of $2.2\mathrm{THz}$ was obtained for each of the Raman Stokes orders in the visible (spanning from green to orange—first to fifth Stokes lines). A larger $5.0\mathrm{THz}$ tunable range was achieved in the NIR spectral region.

© 2011 Optical Society of America

Selective excitation of multiple Raman Stokes wavelengths (green-yellow-red) using shaped multi-step pulses from an all-fiber PM MOPA

Dejiao Lin, Shaif-ul Alam, Peh Siong Teh, Kang Kang Chen, and David J. Richardson
Opt. Express 19(3) 2085-2092 (2011)

Excitation of individual Raman Stokes lines in the visible regime using rectangular-shaped nanosecond optical pulses at 530 nm

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Effect of Rayleigh-scattering distributed feedback on multiwavelength Raman fiber laser generation

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Fluoride glass Raman fiber laser at 2185 nm

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Low-noise, high-brightness, tunable source of picosecond pulsed light in the near-infrared and visible

Peter J. Mosley, Samuel A. Bateman, Laure Lavoute, and William J. Wadsworth
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