Table 2. Probe specifications for modeled collection fiber geometry.

	Unmodified	Beveled	Microlens deep	Microlens shallow
Collection surface area	0.086 ${\mathrm{mm}}^2$	0.049 ${\mathrm{mm}}^2$	0.658 ${\mathrm{mm}}^2$	0.407 ${\mathrm{mm}}^2$
Acceptance angle	$\pm {\mathrm{12.7}}^{\circ }$	$\pm$12.7, ${\mathrm{33.8-53}}^{\circ }$	2.7-${\mathrm{26.1}}^{\circ }$	24.9-${\mathrm{28.7}}^{\circ }$