Abstract
Single-frequency laser operation near has been demonstrated in an all-fiber short-cavity distributed feedback laser cavity using both cladding- and core-pump configurations in a newly developed heavily Tm-doped multicomponent silicate glass fiber. Using a single-mode Er-doped fiber laser at as a core-pump source, a -long distributed Bragg reflector fiber laser delivers single-frequency output at with laser linewidth less than , which is, to the best of our knowledge, the narrowest linewidth demonstrated to date from any single-frequency laser.
© 2009 Optical Society of America
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