Nano-Holographic Interferometry for In-Vivo Observations - Biomedical Optical Phase Microscopy and Nanoscopy - page 368

250

150

100

200

50
0

150

100

-50
-100

50

-150

(A) (B) (C)

-150 -100 -50 0 50 100 150

Position X (nm)

280
240
200
160
120
80
40
0

280

X direction

240
200
160
120
80
40
0

Y direction

-150 -120 -90 -60 -30 0

Position X ( μ m)

30 60 90 120 150

-150 -120 -90 -60 -30 0 30 60 90 120 150

Position Y ( μ m)

(D) (E)

Figure 17.17
(A) FT pattern of the image of the 150 nm polystyrene nanosphere; (B) FT of the real part of the
nanosphere; (C) two-dimensional view of the zero-order extracted from the real part of the FT
pattern of the nanosphere; (D) cross-section of the zero order in the X direction; (E) cross-section
of the zero order in the Y direction [13] .

(A)

160

150
140
130
120
110
100
90
80
70
60
50
40
30

λ eq = 0.1051 R p + 78.612

2 = 0.9976

R

20
10
0

0 50 100 150 200 250 300 350 400

Radius of the nanosphere (nm)

450 500 550 600 650 700 750

Figure 17.18
Relationships between nanosphere radius and (A) equatorial wavelength of the WG mode or (B)
normalized equatorial wavelength of the WG mode [23] .