Table 3.

Output beam width (2W₀) in μm at 13.5 % of peak power for different optrode geometries (tip taper angle of 45° or 30° and shank width of 95 μm or 150 μm) at two wavelengths (IR and visible). In-coupling fibers of various core diameters (d_f) were used.

df (μm)	Optrode 2W0
	λ = 1550 nm			λ = 640 nm
	45°	45°	30°	45°	45°	30°
	95μm	150μm	150μm	95μm	150μm	150μm
50	60	123	118	62	127	119
105	68	122	124	62	125	113
200	73	136	123	63	137	127
400	81	145	123	88	144	121