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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.4
- 수록면
- 147 - 152 (6page)
이용수
초록· 키워드
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We propose a novel bi-focal metallic Fresnel zone plate (MFZP) with shallow depth-of-field (DOF) characteristics. We design the specific annular slit patterns, exploiting the phase-selection-rule method along with the particle swarm optimization algorithm, which we have recently proposed. We numerically investigate the novel characteristics of the bi-focal MFZP in comparison with those of another bi-focal MFZP having equivalent functionality but designed by the conventional multi-zone method. We verify that whilst both bi-focal MFZPs can produce dual focal spots at 15 μm and 25 μm away from the MFZP plane, the former exhibits characteristics superior to those of the latter from the viewpoint of axial resolution, including the axial side lobe suppression and axial DOF shallowness. We expect the proposed bi-focal MFZP can readily be fabricated with electron-beam evaporation and focused-ion-beam processes and further be exploited for various applications, such as laser micro-machining, optical trapping, biochemical sensing, confocal sensing, etc.
목차
I. INTRODUCTION
II. DESIGN AND OPTIMIZATION
III. NUMERICAL RESULTS AND DISCUSSION
IV. CONCLUSION
REFERENCES
참고문헌 (23)
참고문헌 신청
A. J. Fresnel / 1866 / Calcul de l'intensite de la lumiere au centre de l'ombre d'un ecran et d'une ouverture circulaires eclairee par une point radieux / Oeuvres d'Augustin Fresnel 1:365~372
M. Young / 1972 / Zone plates and their aberrations / J. Opt Soc Am. 62:972~976
G. Saavedra / 2003 / Fractal zone plates / Opt. Lett. 28:971~973
J. Jia / 2010 / A super-resolution Fresnel zone plate and photon sieve / Opt. Lasers Eng. 48:760~765
H. Kim / 2017 / Corrugation-assisted metal-coated angled fiber facet for wavelength-dependent off-axis directional beaming / Opt. Express 25:8366~8385
M. Young / 1972 / Zone plates and their aberrations / J. Opt Soc Am. 62:972~976
G. Saavedra / 2003 / Fractal zone plates / Opt. Lett. 28:971~973
J. Jia / 2010 / A super-resolution Fresnel zone plate and photon sieve / Opt. Lasers Eng. 48:760~765
H. Kim / 2017 / Corrugation-assisted metal-coated angled fiber facet for wavelength-dependent off-axis directional beaming / Opt. Express 25:8366~8385
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