Abstract
We experimentally investigate an optimum scheme of coupling a collimated light from a
Ti:sapphire laser source into a standard single-mode fiber (SMF). By adjusting the effective
numerical aperture (NA) of coupling lens and eliminating the chromatic aberration, a coupling
efficiency of around 70% is finally obtained. This result is close to the maximum value predicted by
theoretical simulation. It is well demonstrated that high coupling efficiency between Ti:sapphire
laser and SMF can also be obtained by optimizing certain parameters of a coupling lens, without
employing any special optical components, or the specific fiber with complex structure.
© 2013 Chinese Optics Letters
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