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
(010.3310) Atmospheric and oceanic optics : Laser beam transmission
(060.2430) Fiber optics and optical communications : Fibers, single-mode
(140.3325) Lasers and laser optics : Laser coupling
Fiber Optics and Optical Communications
Jia Liu and Wenhui Fan, "Experimental study on high efficiency of Ti:sapphire laser to single-mode f iber coupling," Chin. Opt. Lett. 11, 050605- (2013)