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Widely tunable fiber-coupled single-frequency Er-Yb:glass laser
Gunnar Karlsson1, Niklas Myrén, Walter Margulis
1Department of Physics, Royal Institute of Technology, Roslagstullsbacken 21, 10691 Stockholm, Sweden. gk@laserphysics.kth.se
Applied Optics
|August 19, 2003
Abstract:
A fiber-coupled tunable Er-Yb:glass minilaser is presented with output power of 40 mW. The laser can be stepwise tuned in single-frequency operation from 1530 to 1560 nm by compressing a fiber Bragg grating that provides selective feedback. Constant output power (fluctuation < 0.8 dB) over the full tuning range is demonstrated. The relative intensity noise spectrum was measured to be < 150 dB/Hz for frequencies > 2 MHz.