Micromechanical Photonics - H Ukita Part 5 ppt

... transverse trap (Prob- lem 3.4). Both show the maximum when the focus is near the surface of the sphere and decrease as the focus comes to the center of the sphere. The po- sitions for the maximum trapping ... transparent particle whose refractive index is slightly higher than that of the surround- ing medium. Figure 3.8a shows that the focused laser beam illuminates the upper part in a mic...

Ngày tải lên: 10/08/2014, 05:20

... with wave- lengths less than that of UV light are irradiated onto electron-sensitive resist, as shown in Fig. 1 .5. High-resolution patterning can be accomplished by scan- ning the e-beam two-dimensionally ... 10 3 -5 4 0-3 133 3-8 Springer-Verlag Berlin Heidelberg New York ISBN 13 97 8-3 -5 4 0-3 133 3 -5 Springer-Verlag Berlin Heidelberg New York springer.com © Springer-Verlag Ber...

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... detecting the scattered light from the evanescent field Focus distance (mm) Focus error signal (mV) -2 50 -2 00 -1 50 -1 50 -1 00 -5 0 -5 0 0 50 100 29 mm 150 0 50 100 150 200 250 -1 00 Fig. 5. 16. Focus ... 177 Length (nm) Boundary Length (nm) Length (nm) 50 0 50 100 150 150 100 50 0 50 100 150 0 50 100 150 200 250 150 100 50 200 250 100...

Ngày tải lên: 10/08/2014, 05:20

... Photograph of the optical encoder. Courtesy of R. Sawada, NTT, Japan GeAsTe LD–PD h1 h2 h0 h Slider a-SiN :H a-SiN :H a-SiN :H Au Substrate Fig. 1.32. A flying optical head with a laser diode. The ... USA parallel 45 ◦ mirrors has been demonstrated to match the optical axis of the LD with that of the micro-optical element [1.38]. Both the micro-XYZ stage and the free-space micro-optic...

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... by the taper-ridged waveguide laser, but also by the highly thermally conductive slider and the re- duction of LD–PD attachment error. Light output is higher for the slider with the higher thermal ... µm, is the sum of the slider flying height h 0 , LD–PD attachment error h 1 (facet-to-slider surface error), and the protective-layer thickness h 2 . Since h 0 =0.9 µmandh 2 =0.24 µm in t...

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... of the suspend- ing medium (water), respectively; c is the speed of light, and His the height of the specimen chamber ( 150 µm). A transversely moving sphere should stably remain near the sphere ... of the gradient force F g , which always pulls a sphere to the beam axis and the scattering force F s , which always pushes a sphere along the beam axis. Figure 3.23 shows the concept of the horiz...

Ngày tải lên: 10/08/2014, 05:20

... by an He–Ne laser light (Q max < 0). They also demonstrated that laser trapping was also possible in air [3.36]. -1 .5 -2 -2 .5 -3 -4 -5 -3 .5 -0 .1 -0 .1 -0 .1 -0 .1 -4 .5 1.4 1 .5 0 0 0.1 0.2 0.3 0.1 0.2 0.3 0.4 0.1 0 0 0.2 0.3 0.4 0.2 0.1 1.6 ... force of the light intensity in the Rayleigh regime where the size is much less than the wavelength,...

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... diode Hemi-spherical SIL slider - + Fig. 5. 38. Heat-assisted magnetic recording (HAMR), avoiding superparamagnetic limit of HDD. A SIL has a higher NA [5. 39]. Courtesy of H. Sukeda, Hitachi, Japan SIMs ... profile. The scattered light with the gold particle (solid line) has a high intensity at the groove edge and has split peaks, which correspond to the gradient of the 202 5 Near Fie...

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... [5. 11] F drag =3πµdv  1+ 9d 32  1 D − 1 H − D  , (5. 23) where µ is the viscosity of the medium, H is the height of the sample chamber and D is the distance between the sphere and the wall surface of the chamber. The viscosity ... (b)? 5. 4. The van der Waals force F v between the particle and the wall is ex- pressed as the Hamaker approximation shown by (5. 25) [5. 26], where H i...

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... Dhar L, Chichester R, Yeh JHJ (1999) High-power laser light source for near-field optics and its application to high-density optical data storage. Appl Phys Lett 75: 151 5– 151 7 5. 43 Chen F, Zhai J, ... 49 gyros, 3 half amorphous, 206 half-wavelength, 51 half-wavelength interval, 40 Halley’s comet, 81 Hamaker approximation, 213 heat-assisted magnetic recording (HAMR), 197 heavy particle,...

Ngày tải lên: 10/08/2014, 05:20