Performance comparisons of a linear BEFL with and without a tunable bandpass filter

Abstract

The paper presented the performance comparison of a linear BEFL with and without tunable bandpass filter (TBF). The comparisons are done in terms of number of Stokes, peak power flatness and tuning range. For the same pump power, the BEFL with a TBF produces 15 Stokes compared to 11 for that of without a TBF. Besides, peak power flatness was also improved for BEFL with a TBF. By tuning the center wavelength of the TBF, the BEFL operation can be tuned to any wavelength within 40nm range in comparison to only 5nm for the BEFL without a TBF as the laser operation is dictated by the self-lasing cavity mode.