| Abstract: Embodiments relate to an all fiber passively Q-switched laser. The laser
includes a large core doped gain fiber having a first end. The large core
doped gain fiber has a first core diameter. The laser includes a doped
single mode fiber (saturable absorber) having a second core diameter that
is smaller than the first core diameter. The laser includes a mode
transformer positioned between a second end of the large core doped gain
fiber and a first end of the single mode fiber. The mode transformer has
a core diameter that transitions from the first core diameter to the
second core diameter and filters out light modes not supported by the
doped single mode fiber. The laser includes a laser cavity formed between
a first reflector positioned adjacent the large core doped gain fiber and
a second reflector positioned adjacent the doped single mode fiber. |
| Filed: 7/18/2012 |
| Application Number: 13/551762 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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